New Audio Amplifiers
with Current Amplifier Outputs.
electronic circuit schematics. Free electronics plans on the Internet.
Free electronics plans on the Internet.
Current amplifiers drive speakers.Table of Contents Electronics Home Page
Nearly all op amps should have current amplifier outputs.
The perfect way to drive inductive loads.
The current amplifier might look complex, but it is simpler than usual amplifier outputs. It consists of emitter followers and current sourcesthe simplest and most reliable circuits in transistor electronics. Emitter outputs track the base with a small offset. A total absence of variation creates reliability and makes designing easy.
The current amplifier output isnít just a different circuit; it is the only way most loads should be driven, particularly hard to drive inductive loads, due to its stability and reliability in addition to its ease of design.
One of the reasons why the current amplifier wasnít used in the past is because the betas (current gains) need to be matched for the small transistors. In fact, there was probably no realization that matching betas would make the circuit work. Matching betas should be automatic with integrated circuits, and it is very easy to do for hands-on work.
There is a need for low cost audio amplifiers which are free from noise and distortion. But they don't exist, because removing noise and distortion is expensive with the usual designs due to a problematic output.
With this new design, current amplifiers solve the problem. They remove noise and distortion at low cost and eliminate the embroilment of designing over an oscilloscope. These amplifiers can be drawn up on paper and constructed without an oscilloscope.
The problem with the usual design is in the output. The output drivers were integrated into the amplifier in a way which produced an inadvertant but unavoidable high voltage gain. The high gain picked up noise and created an oscillation which was difficult to stabilize.
The current amplifier solves the output problem by following the voltage amplifier with a circuit which gains the current (and hence, load driving capacity) without internal voltage gain. The current amplifier is low in noise because of the absence of internal voltage gain. It is also low in distortion because of its high speed. It will get all of the speed and power out of transistors that they can handle. It will ring at 20-40 MHz, when boosters are used with it, as high speed circuits often do; but that problem can be solved without affecting the audio range. (Ringing is a high frequency oscillation, where inductance in wires stores the energy.) Without boosters, ringing does not occur.
This design is too fast for harmonic distortion. Circuits cannot oscillate below their maximum speed. Harmonic distortion is only a concern with usual designs because their maximum speed is in the audio range. The audio amps with the worst harmonic distortion will not function above 5 or 10 KHz.
These amplifiers are easy to construct and versatile. Most importantly, they allow variable gain, which is a must for audio amplifiers, though it seems to have been nonexistence in the past. Generally, instability would not allow variable gain.
Variable gain allows low volume without over-sensitivity on the volume control. Multi level volume controls would not do the same thing, because they would not reduce the noise like reduced gain does. Reduced gain can convert a 100 watt amplifier to a 5 watt amplifier in all respects except the size of the box.
These plans show prototypes for three amplifiers: 10W, 32W and 75W per channel, with a variety of options. The 10W amplifier uses op-amps for voltage amplifiers, which limits the design to 36V when using normal op-amps. The 32W amplifier uses the same circuits in bridge form, which gets about four times as much wattage from the same voltage. The 75W amplifier uses a 90V power supply. Output transistors are not generally available for circuits above 100V; however, the 100V ones usually test out to 180V or more, so I wouldn't be afraid to use them at 120V.
The starting point in designing an amplifier is to find a transformer with a voltage to amperage ratio suitable for the speakers, which are usually 8 ohms. Transformers should be toroids for large audio amplifiers, because they produce less heat and noise and take up less space. Even the 75W amplifier does not require a fan, because it uses a toroid transformer and a large aluminum box.
I use the 10W amplifier for laboratory purposes. It is something everyone needs for general purposes such as a television amplifier. It has a flat frequency response of 5Hz to 400kHz in low gain, 200kHz in high gain. However, at full load (2 amps), cheap power transistors will not function that fast. If they fail to complete a cycle, current flows between them, and they burn out. At 2 amps, their maximum speed is around 80kHz or more, but 50kHz is a safer limit. Lighter loads allow higher speeds.
Boxes should be hand made from aluminum sheet metal to optimize design. Small boxes use a thickness of 0.040 inches (1 mm), larger ones, 0.050 or 0.060 inches (1.3 or 1.5 mm).
These amplifiers use split power supplies, which allows output and centering capacitors to be eliminated while delivering the same power to the speakers. Where split supplies are not available, such as automotive, a technique is shown which allows the same circuitry to be used.
Electronic switching is used with the 75W (90V) amplifier. This means soft-touch buttons are used to vary 8 gain positions or input channels. It is an ideal design, as variable gain is used as often as the volume controls. But it is tedious to construct requiring about 40 chips and 300 hrs of work or more, depending upon research. Plan to make a lot more diagrams than are shown here and do a lot of testing. If you can't undertake such a Herculean task, use rotary switches for variable gain and toggles for the other switching. Slide switches tend to be unreliable but not out of the question when you can replace them easily.
Volume controls are customarily put on the noninverting inputs, but in these amplifiers, I put them on the inverting inputs, which minimizes gain, eliminates common mode voltage and produces a logarithmic taper. These are miniscule effects, and the noninverting input can be used except for the quad input amplifier.
I do not normally put tone controls on an amplifier, because they have little relevance, they add distortion, and they clutter the circuitry and front panel. But they were added to the 75W amplifier to demonstrate their use. The ones used are of highest quality for linearity and low distortion. A bypass switch is used with them, so the position doesn't have to be watched; and it eliminates any question about the purity of the sound.
Tailoring in tone controls well requires much work with an oscilloscope, signal generator and frequency counter. It is not something that can be done on paper. The tone controls designed here can be transplanted to any amplifier, since they have their own supply voltages. To test them, put them on a breadboard and connect them to an amplifier and listen to them.
You can use any type of signal with these amplifiers. Among the best signals is earphone jacks, which is what you would use for a computer. If nothing else is available, speaker outlets can be used.
I have used the 90V amplifier for twenty years, on continuously, and it is flawless.


Shopping online is a convenient and easy way to find the products you’re looking for. In addition to being fast, it is also cost-effective. However, shopping online can be intimidating if you don’t know what you’re doing. We all cringe when we see rogue online ads or have to answer a barrage of surveys in order to get a discount code. But it doesn’t have to be this way. With a little knowledge and these tips, you’ll be able to shop in peace! We have researched the following 10 best coaxial cable for internet 2016 for your ease of shopping.
Review of Best Coaxial Cable For Internet 2016
1. NETGEAR Renewed C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router …
- Brand: NETGEAR
- Manufacturer: Netgear Inc
- Color: Black
- Dimensions: Height: 21.0 Inches Width: 12.0 Inches Length: 20.0 Inches Weight: 0.11 Pounds `
- Netgear Certified Refurbished product is manufacturer refurbished to work and look as new with 90 Day Warranty and email support. All accessories are included with limited documentation and additional information online. Netgear recommends to udpate the firmware for the device to be up to date.
- DOCSIS 3.0 cable modem unleashes 8x faster download speeds up to 340 Mbps faster, smoother WiFi, and works with all major cable Internet providers (Not Compatible with Cable Bundled Voice Services).
- Certified to work with Cable Internet Providers like XFINITY from Comcast, Time Warner Cable, Cox, Cablevision, Bright House Networks, & More (Not Compatible with Cable Bundled Voice Services).
- 8×4 channel bonding with Gigabit Ethernet Ports for fast wired, connections USB port to wirelessly share your hard drive.Double firewall protection (SPI and NAT firewall)
- “Netgear Refurbished product may have a removed serial number. You will need to state the product is refurbished (state the full part number) if emailing customer support. See the attached (image) flyer to obtain the Serial Number and MAC Address information that maybe needed by your Cable provider before contacting them.”
2. onelinkmore Coaxial Cable Right Angle Connector F Type Female to …
- Brand: onelinkmore
- Manufacturer: onelinkmore
- Color: 2 PCS
- Ideal for positioning F-Pin cables flush against a compatible wall port or digital audio/video component. Each adapter comes individually packaged to guard from scratches
- This coaxial cable connector works with all antenna, satellite receiver and cable TV. Fit for RVers, satellite dish, cable TV, internet, RV trailer, coaxial cable and so on.
- No need to sacrifice wall space or remodel furniture layouts when wiring your home or office,RG6 angled adapter for adapting a RG6 coaxial cable (also refer to as RG6/U cable, RG-6/U cable or RG-6 cable) to 90 degree
- 90° adapter for installations in tight spaces,Use for adapting a RG6 coaxial cable (also refer to as RG6/U cable, RG-6/U cable or RG6 cable, RG58, RG59 and RG11 coaxial (75Ohm) cable.) to 90 degree.
- Package Content : 2 x Coax Coaxial Cable Connection F Type Right Angle Female to Male Adapter
3. 6FT G-PLUG RG6 Coaxial Cable Connectors Set – High-Speed Internet, …
- Brand: G-PLUG
- Manufacturer: G-PLUG
- Color: White
- UNLIKE OTHER COAX CONNECTORS THAT give you a SPOTTY SIGNAL and an INCONSISTENT connection, the G-PLUG 75ohm Standard Shield RG6 Cable provides a solid, RELIABLE CONNECTION and effectively extends your signal, due in part to its nickel-plated brass COMPRESSION connectors – known as the best type of F connectors to shield signals from noise. Our F type connector is compatible with all RG6-wired devices: BROADBAND & high-speed Internet, SATELLITE TV, digital TV, and more.
- FRUSTRATED WITH THE LOW QUALITY OF other COAXIAL CABLES that break and STOP FUNCTIONING after just a few weeks – or worse, don’t work from the get-go and FALL APART when you first connect them? At G-PLUG, we pride ourselves on engineering some of the highest-quality, most DURABLE compression coax connectors & cables on the market, so they’re sure to become your reliable go-to. Our hardy DOUBLE RUBBER O-ring is even WEATHER-SEALED, so our extension cable is safe for both INDOOR and OUTDOOR use.
- YOUR COMPLETE COAXIAL CONNECTION KIT. Our premium-quality coaxial cable connector set includes everything you need for a FAST, STABLE CONNECTION: 75OHM RG6 Standard Shield Cable, BRASS Compression Connectors (nickel-plated), WATERPROOF and weather-sealed Double Rubber O-Ring for both inside and outside use, LEAD-FREE PVC Jacket, and an EASY-ROTATE Nut for connecting to your device. Also includes an EXTRA EXTENSION COUPLER, so you can connect multiple cables and extend your total cord length!
- OUR CUSTOMER PROMISE: At G-PLUG, we’re committed to our customers’ ABSOLUTE SATISFACTION. If for any reason you aren’t thrilled with your internet and TV aerial extension cable within 30 DAYS of purchase, simply contact us directly to send back your undamaged coaxial cable compression connector set, and we will return your F connector to coax cable PAYMENT IN FULL. We also offer a 12-MONTH warranty on our compression coaxial connector and cable for a free REPLACEMENT or full reimbursement.
- AT G-PLUG, WE’RE COMMITTED TO engineering top-of-the-line cables and connectors with SUPERB FUNCTIONALITY. Founded by a group of passionate, innovative electronics experts in the United Kingdom, our company offers excellent performance in such categories as Data Cable, Audio & Video Accessories, Television & Telephone Cables, Brush Faceplates, and more. Our CUSTOMER SERVICE TEAM is standing by to help you with anything you need – we reply to all inquiries WITHIN 24 HOURS.
4. 100ft Black TRI-Shield Indoor Outdoor RG-6 Coaxial Cable Nickel-Plated Brass …
- Brand: PHAT SATELLITE
- Manufacturer: PHAT SATELLITE
- Color: Black
- Dimensions: Weight: 1.0 Pounds `
- Indoor Outdoor Tri Shield 75 Ohm Coax Cable for (CATV, Satellite TV, & Broadband/High Speed Internet) swept tested
- Cable Construction: 18AWG TRI-SHIELD – Jacket: UV Resistant PVC – Braids: Aluminum Alloy Coverage – Foil Shields: Aluminum (100% Coverage) – Dielectric: Gas Injected Foam PE
- Connectors: Nickel-Plated Brass Constuction 21mm compression connectors
- Assembled in the USA by professionals at PHAT SATELLITE INTL 8 facilities across the USA
- PLEASE SEE OTHER CABLES AVAILABLE FROM PHAT SATELLITE INTL
5. Netgear Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers …
- Brand: NETGEAR
- Manufacturer: Netgear
- Dimensions: Height: 3.94 Inches Width: 11.02 Inches Length: 11.65 Inches Weight: 1.6 Pounds `
- input voltage：120 -240V
- COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and Cable bundled voice services
- SAVE MONTHLY RENTAL FEES: Model C7000 replaces your cable modem and WiFi router saving you up to $150/yr in equipment rental fees. System Requirements Cable broadband Internet service, Check your cable Internet service provider web site for data speed tier compatibility, Not compatible with Cable bundled voice services, Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, UNIX, or Linux, Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
- BUILT FOR FAST SPEED: Best for cable provider plans up to 400 Mbps speed
- FAST Wi Fi PERFORMANCE: Get up to 1800 sq ft wireless coverage and 30 devices connected with AC1900 speed (up to 1900 Mbps)
- VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports and 2 USB ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices
- MODEM TECHNOLOGY: Engineered with 24×8 channel bonding and DOCSIS 3.0
- SAFE & SECURE: Includes parental controls, and supports WEP and WPA/WPA2 wireless security protocols
6. Coaxial Cable (25 ft) Triple Shielded – RG6 Coax TV …
- Brand: Ultra Clarity Cables
- Manufacturer: Ultra Clarity Cables
- Color: White
- PRIMARY USES AND APPLICATIONS – This 25 Foot Coax cable is used for connecting a cable television, satellite receiver, cable modems, VCR, cable box, digital router, antenna, computer network connections, digital audio, converter box and for other audio and visual purposes.
- IN-WALL USE – Ultra Clarity Cables CL3 cable are in wall rated for fire safety codes. Multi-purpose wire used for security systems, speaker wire, intercom systems, nurse call buttons, and more.
- SUITABLE ANYWHERE – Triple Shielded RG6 coaxial cable perfect for outdoor or indoor use. These Triple Shielded CL3 cable offers protection from electric shock which is made to carry more voltage.
- GOLD PLATED CONNECTOR – The coaxial cord is gold plated which minimizes interference and provides a reliable smooth surface that connects perfectly with the mated surface, plus this cable is corrosion resistant.
- HIGH QUALITY CONNECTOR – Durable coaxial cable connector that will not pull off, break, lose signal or come loose.
7. BlueRigger RG6 Coaxial Cable (6FT, Male F Type Connector Pin, …
- Brand: BlueRigger
- Manufacturer: BlueRigger
- Color: Black
- Dimensions: Height: 5.0 Inches Width: 5.0 Inches Length: 5.0 Inches
- LOW LOSS RG6 CABLE: Exceptional signal and picture quality, even over long runs. Triple shielded RG6 low loss coaxial cable is perfect for indoor use. Has a highly durable PVC outer jacket. High quality consistent 75 Ohms throughout the whole cable
- PLUG & PLAY: The cable has no need for drivers or software. Bluerigger Coax cables can be used for security systems, speaker wire, intercom systems, nurse call buttons and more
- UNIVERSAL COMPATIBILITY: Provides a convenient connection between a TV, HDTV, Cable Modem, Digital Router and Cable Televisions (CATV), Satellite Receivers, Cable Box, VCRs, Antenna Connectors and more. High frequency range with a pure copper conductor to cover services and providers that range from 2.3MHz to 3.0GHz
- EXQUISITE WORKMANSHIP: 100% pure copper core, corrosion resistant 24K gold plated connectors minimize EMI & RFI interference while transmitting a clear, reliable signal.
- LIFETIME WARRANTY: BlueRigger cables are backed by a Lifetime Warranty and US-based customer support
8. Cat 6 Ethernet Cable 50 ft White – Flat Internet …
- Brand: Jadaol
- Manufacturer: Jadaol
- Color: White
- Dimensions: Height: 0.4 Inches Width: 3.5 Inches Length: 3.5 Inches Weight: 0.440924524 Pounds `
- Bundled with the 20 cable clips, so no need to buy them elsewhere
- High Performance Cat6,30 AWG,UL Listed,RJ45 Ethernet Patch Cable provides universal connectivity for LAN network components such as PCs,computer servers,printers,routers,switch boxes,network media players, Xbox,PS, Gaming, POE device,NAS,VoIP phones
- Cat 6 standard provides performance of up to 250 MHz and is suitable for 10BASE-T,100BASE-TX(Fast Ethernet),1000BASE-T/1000BASE-TX(Gigabit Ethernet)and 10GBASE-T(10-Gigabit Ethernet)
- UTP(Unshielded Twisted Pair) patch cable with RJ45 gold-plated Connectors and are made of 100% bare copper wire, ensure minimal noise and interference
- The unique flat cable shape allows for a cleaner and safer installation. You can easily and seamlessly make the cable run along walls, follow edges&corners or even make it completely invisible by sliding it under a carpet.
9. Quick Connect Cable TV Connectors, 5-Pack Ullnosoo F Type Push …
- Brand: Ullnosoo
- Manufacturer: RFAdapter
- This quick connect works with all antenna, satellite receiver and cable TV. Fit for RVers, satellite dish, cable TV, internet, RV trailer, coaxial cable and so on.
- High quality, made with nickel-plated brass for exceptional quality and extremely low signal attenuation. Commonly used on RG58, RG59, RG6, and RG11 coaxial (75Ohm) cable.
- Push on connector is quicker and easier than threaded connector, just pull and push, don’t need screwing. It is convenient for you to connect coaxial cable in tight, black space or hard to reach areas, like location behind wall-mounted TV. Great for cable connection which is often need to connect and disconnect.
- Come with 5-Pack, which can save you much and makes you always have a backup.
- We offer worry-free warranty and friendly customer service within 12 months for your confident purchase. If you are not satisfied with any product, please don’t hesitate to contact us, we will serve you our best.
10. Monster Essentials Coaxial Video Cable – RG-6 Coax Cable Featuring …
- Brand: Monster
- Manufacturer: Vanco International, LLC
- Dimensions: Height: 9.25 Inches Width: 4.06 Inches Length: 1.54 Inches
- OPTIMUM SIGNAL TRANSFER: The Monster Essentials RG-6 Coaxial Cable has a gold-plated F-pin protector that provides stable and strong signal transfer
- DURAFLEX PROTECTIVE JACKET: This RG-6 coax cable features dual-layer shielding for low signal loss
- PREMIUM METAL HOUSING: Ensures the highest standard of connector terminals with its top-quality metal housing
- DURABLE: Made with aluminum extruded shell for longer use
- MULTIPLE APPLICATIONS: It is digital-ready, which allows you to connect HDTV, satellite receiver, Internet, home theater devices, and other digital components
Benefits of Buying the best coaxial cable for internet 2016 at Amazon
When shopping for products online, it can be helpful to browse and compare prices at Amazon.com. Here are some of the benefits of doing so:
-Low prices: Amazon.com often has the lowest prices on products, which can save you a lot of money.
-Variety: Amazon.com offers an incredible variety of products, so you’re sure to find what you’re looking for.
-Shipping time: Amazon.
Supper Fast Delivery
Amazon is the world’s largest online retailer and employs a highly efficient supply chain. Its logistics system runs more than 100 planes, 3,000 trucks, and 40 rail cars daily. That translates to faster delivery for Amazon customers. The e-commerce giant delivers goods within 24 hours of being ordered online.
First, read user reviews on Amazon. This will give you more information about the product to buy.
Already I’ve mentioned that our product research team scanned thousands of reviews and prepared a list of the best best coaxial cable for internet 2016.
The Best Customer Support.
Amazon’s helpdesk is second to none in the eCommerce industry. The company offers excellent customer support and responds to queries within a few hours. Customer service representatives are always available, even on weekends and public holidays. Furthermore, Amazon offers 24/7 live chat through the website, which allows customers to speak with an agent whenever they need assistance.
Collection of Many Products:
Amazon offers a massive selection of products. If you have multiple options, you can make a wise decision to choose the best one. Since you are looking for best coaxial cable for internet 2016, you also have numerous options, brands, and manufacturers to choose from.
Looking for the best prices on your favorite items? Look no further than Amazon.com! The online retailer offers unbeatable prices on a variety of items, from books to electronics. With the Amazon Prime membership, you can enjoy free two-day shipping on many items, as well as access to exclusive deals and discounts not available to non-members. So why wait? Explore Amazon.com today for the best prices around!
Honesty and Trustworthiness:
Amazon is undoubtedly a trusted marketplace. We can highly ensure you that Amazon won’t scam you. Reviews are the best factor in judging a product. A customer needs to buy a product before leaving a review about the product. That’s why all the customer reviews available at Amazon are called verified reviews. So, by reading the reviews, you can decide before buying. And I repeat, we studied all the reviews about a product and picked the finest one for you.
Amazon Offers Fast Delivery and Lower Shipping cost.
Amazon has quickly become the go-to online store for consumers looking for fast shipping and low prices. While other online retailers may offer faster shipping, Amazon typically offers the lowest shipping cost. Furthermore, Amazon offers free two-day shipping on many items for Prime members. This makes it easy for shoppers to get their purchases delivered quickly and without having to spend a lot of money on shipping.
The Amazon online store is a great place to purchase items, but it can be difficult to know what to do if something goes wrong. You may have a warranty on the product you just bought, or you may not. In this article, we will discuss the different types of warranties that are available and how to use them.
When it comes to shopping online, Amazon is the best place to buy products. Not only does it offer faster delivery and great customer support, but also offers some of the best prices on certain products. If you’re looking for a product that’s not on our list, or if you have any questions about buying something online, just let us know in the comments below! We are here to help you.


The system was designed in modular form, based on the idea of distributed processing and client/server architecture. This was done to ensure flexibility for future use of the system in other larger or smaller archives, and took into consideration future access options through networks.
Figure 1. General Scheme of System Operation
Fundamental System Modules
From the user’s standpoint, the system consists of three modules, each of which covers a different group of functions:
The information and reference system provides descriptive information that gives the user all of the tools needed to find original or reproduced documents. It is not simply an index or database providing access to digitized information. It is a unified, global system of information valid for all descriptive information in the Archivo. It includes data contained in all the inventories, catalogs, and indices produced over the AGI’s history. It also includes the information necessary to recover digital images of the documents.
The digital image storage system offers the tools needed to consult digital copies on the monitor or on paper. The system handles two independent processes: document digitization and its storage on optical disk, and access to digitized images for consultation.
User management includes all of the functions relating to the retrieval of AGI documentation, through both manual and automated consultation:
- Tracking research requests (researchers’ files, topics of investigation, statistics on use, and user profiles)
- Monitoring Reading Room use
- Controlling document movement within the Archivo
- Controlling reproduction service for researchers
To handle the series of functions outlined above and to meet the aims for flexibility, the system consists of various subsystems. Each subsystem comprises a series of logically related functions that are carried out within their corresponding operating environments. Different servers provide the main functions in communication with the several workstations: These subsystems are as follows:
- The textual database deals with operation of the information and reference system. It includes the data entry and consultation processes.
- Digital image storage provides the resources for consultation of digital surrogates. It includes the processes of digitization and consultation.
- The user-management database permits control of the operation of archive and system consultation.
- The liaison interface provides the necessary communication with the other subsystems.
- The user interface facilitates user dialogue at the “client” station. It converts user inquiries into messages sent to the corresponding subsystem, and converts the messages received into easily intelligible replies.
- The printing subsystem allows for printing textual information and digital images.


The Indium Phosphide (InP) specialist :
InPACT manufactures and sells InP single crystal wafers for the use in telecommunications and microelectronics fields:
- For fiber optics network components including DWDM lasers, VCSELs, pump lasers, PIN and APD diodes, amplifiers ...
- For high speed electronics circuit using HBT, HEMT for fiber optics, wireless and space communication and automotive applications.
Headquartered in the Alps of France with a production site at Moûtiers (near Grenoble), InPACT is the largest Western InP wafer producer.
If you would like to contact us, please email us at firstname.lastname@example.org


Wireless Internet Access
ICPL provides 6 internal and 2 external wireless 802.11b/g access points. The wireless coverage areas overlap to provide wireless access to nearly all areas of both floors of the Library. The external antennas provide free Internet access to the City Plaza pedestrain mall around the west and south sides of the Library.
You will need a laptop computer or other portable device with a wireless network card. Wireless network cards can be purchased at any computer supply store.
Settings & Software
Your device will need to be configured to obtain an IP address automatically using DHCP. Because each person's device is going to be different you will be responsible for knowing how to configure your own equipment. See the Configuring Your Computer for Wireless page for some helpful tips.
Where to Connect
Wireless internet access is available throughout the entire library, including the library meeting rooms.


Broadband satellite communication makes its way into the Namibian fleet
The coastline of Namibia is barren and desolate with only a handful of towns dotted along its entirety. As the local telecom operators’ LTE networks only cater for the populated areas, use of the technology do not extend for use out at sea, especially out on the fishing grounds.
Therefore, whilst crew might enjoy broadband access when in port or just off port limits, connection is lost once they set sail for the fishing grounds.
Namibia’s fishing fleet, albeit small in size, covers several sectors of the industry. The most dominant are the deep-sea trawlers and longlines whom can operate anywhere between a week and 3 months at sea.
Recently, several external factors have played a role in the local industry preventing vessel owners and operators to splurge on luxuries such as satellite communications. Communication equipment on board these vessels are usually just supplemented or maintained in order to conform to local radio regulations.
Communication via satellite (besides for GMDSS equipment required by legislation) is viewed as a luxury and rarely receives the same attention as other bridge equipment used for navigation or fish finding purposes.
All of the aforementioned factors have played a pivotal role in opening a valuable market segment in Namibia. The need for affordable, high-speed access to the internet in order to remain connected has now become the accepted norm. Furthermore, these systems need to be completely scalable and flexible according to the client’s needs.
Several broadband technologies have made their appearance over the course of the last decade – many offering their own flavors in the form of varying degrees of uplink speeds and subscription packages.
Unfortunately, entry level systems with low bandwidth capabilities do not cater for multi-user environments mostly due to technological restraints of the hardware in use. With more users requiring access, more bandwidth needs to be provided.
The advancement in technology has realized this and delivered on the demand for viable broadband data to the maritime market. Affordable VSAT has gone a step beyond data technologies inclined towards a small network topology, and has opened up the world of
always-on connectivity to the maritime industry.
Nonetheless, it is not only crew welfare that has benefited from this technology, fishing operations as a whole has now become more strategically planned and managed as general oversight has increased over individual fleets. Captains and fishing masters’ plan their days ahead according to meteorological data and as oceanographic data become available. All downloaded with a click of button directly to their on board chart plotters.
Fleet managers keep an eye on shore, observing various forms of telemetry data received from their vessels at sea, planning ahead and scheduling maintenance when required.
Vessels experiencing technical problems whilst at sea are now diagnosed remotely from ashore, providing technicians with a “hands-on” approach to solving problems.
Administrative tasks designated for the officers are attended to whilst at sea increasing back office efficiency.
The advancement in satellite technology has incremented exponentially over the last couple of years with no end in sight.
There has been a radical shift in how mariners go about their duties on board sea going vessels, their welfare maintained crew morale increased – all attributed to the way in which we stay connected and the technology behind it.
Are you looking for satellite communication solutions for your fleet? Contact Radioelectronic


Middleware is connectivity software that consists of a set of enabling services that allow multiple processes running on one or more machines to interact across a network.
Middleware is essential to migrating mainframe applications to client/server applications and to providing for communication across heterogeneous platforms. This technology has evolved during the 1990s to provide for interoperability in support of the move to client/server architectures (see Client/Server Software Architectures). The most widely-publicized middleware initiatives are the Open Software Foundation's Distributed Computing Environment (DCE).
The industry's most comprehensive and integrated middleware provides a clear path to service-oriented architecture
Jansys is best for developement in middleware.


This application will auto-reply to SMS text messages and incoming phone calls. Its easy to use and features quick and easy configurations. You can send a default message or configure specific personalized messages by contact. An easy to use favorites list can be setup to auto-reply to a specific set of contacts.
This application is great for meetings, while driving, when your at the movies, or just doing anything where you do not want to be disturbed.
Contact Specific Settings
Personal Attendant is a free software application from the Telephony subcategory, part of the Communications category.
The app is currently available in English and it was last updated on 2011-02-20. The program can be installed on Android.
Personal Attendant (version 4.6) has a file size of 203.42 MB and is available for download from our website.
Just click the green Download button above to start. Until now the program was downloaded 49 times.
We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.


Video Conference after Covid
The COVID-19 pandemic has drastically changed the way we work and communicate, and video conferencing has become an essential tool for businesses and organizations around the world. While the pandemic has accelerated the adoption of video conferencing, it is likely that video conferencing will continue to be an important tool for communication and collaboration even after the pandemic.
Here are some potential ways video conferencing may be used post-COVID:
Hybrid Work Environments: With many organizations adopting hybrid work models, video conferencing will likely continue to be an essential tool for remote teams to communicate and collaborate with their in-office counterparts.
Reduced Travel: As businesses have realized the benefits of virtual meetings, it is likely that there will be a reduction in business travel, with more meetings being conducted virtually.
Improved Work-Life Balance: Video conferencing allows individuals to attend meetings and collaborate with colleagues from the comfort of their home or other remote location, reducing the need for time-consuming travel and improving work-life balance.
Increased Accessibility: Video conferencing makes it easier for individuals with disabilities or those in remote locations to attend meetings and participate in collaborative efforts.
Enhanced Collaboration: Video conferencing enables individuals and teams to collaborate in real-time, share documents and ideas, and solve problems more efficiently and effectively.
Overall, video conferencing has become an essential tool for businesses and organizations during the COVID-19 pandemic, and it is likely to remain an important tool for communication and collaboration post-COVID. With continued advancements in technology, video conferencing will likely become even more accessible, user-friendly, and integrated into our daily work routines.


There’s growing buzz around the Nokia smartphones, which are being brought back into the market by Finnish company HMD Global. HMD Global has the license to use the Nokia brand name on mobiles, and will be manufacturing, distributing these phones worldwide. Now at the MWC 2017 launch of these phones, Nokia had already said that the availability will be around the second quarter globally, which is ideally April, May and June. Nokia has been tweeting to users saying they aim to ”release worldwide in Q2 2017 (April – June)”. But it is not clear whether all four phones will launch in one go or not.
Nokia 3310 come in four colour variants namely Warm Red (Glossy), Dark Blue (Matte), Yellow (Glossy), Grey (Matte). The Nokia 3310 comes with a 2.4-inch QVGA screen along with a decent 16GB internal storage for a feature phone. Further, this storage can be expanded up to 32GB via micro SD card. We get a 2-megapixel rear camera with LED flash along with Nokia Series 30+ operating system. For the fuel, the 3310 packs a 1200 mAh battery which Nokia claims can last you 22.1 hours of talk time, 31 days of standby, 51 hours of MP3 playback and 39 hours FM radio playback. In terms of connectivity, we get Micro USB (2.0), Bluetooth 3.0 with SLAM, 3.5 mm headphone jack and 2G network connectivity.
Other models to be launched are Nokia 6, Nokia 3, Nokia 5.


The “Internet of Things”, or IoT, is a phrase used to define the universe of internet-connected objects that have the capability to interact with the physical world and exchange data over a network. The use of networked devices to exert control over a physical environment has been around for quite some time in the industrial world; electrical grids are just one example. However, the concept has exploded in popularity thanks to its expansion into the consumer market, and rebranding with the catch-phrase “IoT”.
Before this explosion of IoT in the consumer market, the majority of devices connected to the internet were computers, and IoT in the industrial world was largely confined to closed networks. Now everything from wearable fitness trackers to “smart” refrigerators that allow you to see their contents from the grocery store aisles are connected to the internet. And, while the proliferation of IoT has provided a wealth of opportunities for people to easily share information and conveniently control our environment, it’s made our networks and the internet in general more prone to cyberattacks.
Cybersecurity and Privacy Risks
IoT devices face many of the same types of cybersecurity and privacy risks as conventional IT devices. But, managing these risks is very different. The National Institute of Standards and Technology (NIST) has recently taken steps to begin addressing the unique issues of IoT cybersecurity. In September, the organization released a draft document entitled, Considerations for Managing Internet of Things (IoT) Cybersecurity and Privacy Risks (NIST IR 8228).
Because IoT devices are so varied, the document does not offer specific guidelines and recommendations to improve privacy and cybersecurity protections, but rather provides an overview of baseline considerations and mitigation goals to be considered as they pertain to the following high-level risks:
Risk Management Considerations
NIST identifies several high-level considerations that impact risk management for IoT devices. The first has to do with the core components of IoT devices: sensors and actuators. Sensors and actuators are both transducers. A transducer is any physical mechanism that converts energy from one form to another form. In other words, sensors and actuators control how IoT devices interact with the physical world.
Sensors convert physical energy to electrical impulses that can be interpreted by IoT devices and shared with other IoT and conventional IT devices. Fitness trackers are a good example. These devices are able to sense and record vital signs; your heart rate, pulse, sleep patterns, etc. The data can be stored on the device and uploaded elsewhere, for example to an electronic health record (EHR).
With actuators, the process is reversed; an electrical input allows you to initiate a physical action in the environment, such as when a signal sent from your phone or computer to an IoT doorbell system unlocks the door when you recognize the person standing in the doorway.
The second high-level consideration NIST identifies concerns limitations with how IoT devices are accessed, managed and monitored. While conventional computers allow for authorized users to access and manage their hardware components and software applications and to monitor their functioning, IoT devices usually don’t allow for the same level of oversight. Many devices are “black boxes”; there is no ability to manage their software or access their internal hardware.
The third high-level consideration NIST identifies is the availability and effectiveness of cybersecurity and privacy capabilities. NIST differentiates between “pre-market” capabilities, which are built into by the manufacturer prior to sale, while “post-market” capabilities are those that you can add yourself.
The pre-market and post-market capabilities for IoT devices are different than those available for conventional IT, with some capabilities being less effective or not available at all. These capabilities include things such as event logging, encryption, user authentication and firewalls. For some IoT devices, these can be counter-productive to their functioning; however, IoT devices without these capabilities are more vulnerable to hacking, which in turn increases the risk to your entire network.
NIST Risk Mitigation Goals
The NIST draft document addresses high level risk-mitigation goals in response to the areas of risk identified:
IoT Device Security
In order to protect IoT devices, you need to have an accurate inventory. This may pose a challenge if your devices lack unique identifiers or are “Black Boxes” that provide little or no information on their configurations or other devices on your network to which they are connected. Black box devices can also be problematic when trying to update their firmware, hardware and software. And, devices that are unpatched or running outdated firmware or software are at higher risk of attack. In addition, some IoT devices don’t support strong passwords, require default passwords to be changed, or require passwords at all. Finally, not all IoT devices have the capacity to log security incidents, making it very difficult to know if it’s been accessed by an unauthorized person.
IoT Data Security
Many IoT devices lag behind conventional IT devices when it comes to the security of data stored and transmitted. IoT vulnerabilities have been found recently in everything from security cameras to medical devices. Security measures commonplace in conventional IT devices aren’t always built in to IoT devices. These include encryption, data backup and restoration capabilities, and mechanisms to purge data prior to repurposing or disposing of IoT devices.
Protecting individuals’ Privacy
Of course, protecting the privacy of individuals whose data is stored on IoT devices encompasses securing the devices themselves, and the data residing on them. But it also includes providing individuals with sufficient control over what data is accessed, how it is used, and where it is stored. These tasks are often more challenging to manage with IoT devices, especially when multiple IoT devices with competing purposes are in use on a given network.
Because IoT devices are closely connected, all a hacker has to do is exploit one vulnerability to impact the entire network to which the device is connected. But, managing the privacy and security risks of IoT devices requires a delicate balance between the securing these the devices and their data, and maintaining the usability of the devices and the availability of the data being stored and transmitted.
The NIST document is just one means of addressing IoT cybersecurity. Another approach that is gaining traction is addressing cybersecurity through legislation. In fact, California recently became the first state to pass an Internet of Things cybersecurity law. Several IoT bills have also been introduced at the federal level, although none have made it to a vote. It’s only a matter of time, though, that more states pass their own laws, and there may yet be federal action, either as a separate law, or as a revision to existing HIPAA regulations.


High voltage cable system optimization
We have been responsible for optimization of several high voltage and medium voltage cable systems in various industries. In order to provide the best solution for our Clients we have made specialized calculations, simulations and analysis.
Electrisim was appointed by Client to optimize underground high voltage cable (110 kV). The main task was to analyze all technical aspects of the cable and to provide technical specification (type, cross-sections, section length etc.) of the final cable system solution.
Description of the system
The work was part of construction of new wind farm where the high voltage underground cable (24 km trench length) connects the wind farm’s substation to the grid operator’s substation.
Electrisim carried several types of analyses to determine the optimal high voltage cable system. The scope of work included:
- Load flow analysis,
- Short circuit analysis,
- Calculation of continuous current rating based on IEC 60287 (for different scenarios, including cable installation in steel pipe). Determination of thermal current-carrying capacity of the conductor, sheathing, shielding and short-circuit forces,
- Calculation of the cyclic and emergency current rating of cables based on IEC 60853,
- Comparing the ampacity results with Finite Element Method,
- Power/energy losses calculation,
- CAPEX/OPEX analysis,
- Earthing/bonding specification,
- Determination of capacitance, charging current, earth-fault current, inductance, induced voltages and currents in ground wires, metal sheaths, and shielding,
- Selection of cable joint positions,
- Geotechnical tests on cable route for the verification of thermal resistivity,
- Trench backfilling specification, including selection of Fluidized Thermal Backfills, size of backfill envelope, trench size, configuration of cables,
- Calculation of pulling forces,
- Calculation of electric and magnetic fields around cable systems,
- Overvoltage, surge analysis (connecting surges, lightning etc.),
- Specification of cable temperature monitoring system and the effective use of results.


An enhanced 9-1-1 system (E9-1-1) is one that is designed to automatically route any 9-1-1 call to the proper Public Safety Answering Point (PSAP). The PSAP that receives the call is responsible for dispatching emergency services to the caller. Along with the call, 9-1-1 call takers also receive the calling party's phone number and information about the caller's location.
Next Generation 9-1-1 (NG9-1-1) is an initiative aimed at updating the current 9-1-1 infrastructure to improve public safety communications in an increasingly mobile society. It is envisioned as a system of managed, IP-based networks which will enhance the current E9-1-1 features while adding new capabilities. This means in addition to being able to call 9-1-1 from any communication device, the public would be able to transmit text, images, video, and data to a Public Safety Answering Point (PSAP).
The sections below illustrate some of the steps the District has taken towards NG9-1-1.
As of of the first steps towards NG9-1-1, the District designed and created a multi-faceted IP network, which connects the District PSAPs together using both fiber and a wireless networks.
This network is carefully monitored and upgraded over time. Once a call is brought into the network, it allows IP transport of the call and associated information. Currently, all 9-1-1 calls from the AT&T selective router are routed to the appropriate PSAP over this IP network. While the overall current system is a mix of analog and digital, the District is steadily working towards a purely digital and IP network.
As part of a group effort through the Texas 9-1-1 Alliance, the District is working with a company known as 911 Datamaster to create a Location Validation Function (LVF). This LVF is essentially a database which will allow authorized service providers to validate a subscriber's location in real time. Any validated service provider will be able to access the system via an open, but secure interface. This database will eventually replace the Master Street Address Guide (MSAG).
The end result of the LVF project will be the first time that mapping data will be the sole source for 9-1-1 location information, as opposed to tabular data. While MSAG and postal data are initially being used to create the GIS layers, the resulting data will be the authoritative source for address validation.
The legacy 9-1-1 system has no way of natively receiving or processing an SMS text message. For the last several years, the District has been using an aggregation service to receive text messages. In this method, text messages from the various wireless carriers are sent to a Text Control Center (TCC), then delivered to the PSAP via a secure web browser connection.
As of late 2017, the District started work on an integrated text to 9-1-1 solution. This method delivers text messages from the TCC directly into the specialized 9-1-1 equipment. The text message behaves more like a 9-1-1 call and gives the District more control over how it is delivered.


All CloudCheckr environments are fully operational. Our engineers will continue to monitor for any further issues.
Posted Oct 12, 2020 - 15:43 UTC
We are continuing to investigate this issue.
Posted Oct 12, 2020 - 15:35 UTC
We are currently investigating an issue with the CMx US region. All other regions are operational. app.cloudcheckr.com is currently operational. Our engineers are working on an incident with the CMx environment


This article is part of the TechXchange: Delving into EMI, EMC and Noise
Members can download this article in PDF format.
What you’ll learn:
- What led to the 400-Hz generator as the answer for aviation power?
- Challenges with EMI filters.
- Topology for a 5-kW power supply targeting aircraft applications.
Modern aircraft electrical systems use a variety of ac and dc power voltages / currents. The most common voltage and frequency is 400 V ac @ 400 Hz, 115 V ac @ 400 Hz, and 28 V dc. In this article, we’ll primarily discuss 400-Hz ac and its effect on neighboring electronic systems.
Why Does Aviation Use 400-Hz Power?
When aviation began using electrical systems years ago, the industry chose dc power. When and later became more prevalent in aircraft, the primary goal was reducing the size and weight of transformers, motors, and power supplies. Designers later opted to use a higher frequency, which would lead to lighter-weight components.
At this higher frequency, more power would be lost in the transmission lines, which would also increase cost. (The two key properties here are dielectric conductance and copper resistance that cause signal loss at high frequency; this is because they vary with frequency.) However, the length of power transmission systems within the aircraft was short, so the power loss became negligent.
Power engineers ultimately designed a unique generator that created the 400-Hz output used today. This allowed an original motor, which was fairly large and heavy, to be replaced by a far smaller and lighter version that could perform the same work. The reduced weight enabled an increase in cargo capacity and trimmed-down fuel consumption.
It was then that power at 400 Hz for aviation became successful and was ultimately used as the standard of modern ac-powered aircraft. Airports worldwide quickly standardized on this 400-Hz power system, which had a cable and plug that enabled the aircraft to land at any area of the globe to receive proper service.
400-Hz EMI Filters
The 400-Hz operating frequency creates a significant challenge for EMI filters. The main drawbacks are high leakage current and increased magnetic core losses, which will lead to heating in both inductors and capacitors. Eventually, this could cause filter failure.
In these 400-Hz applications, designers must be sure that the EMI filter will operate safely. Plenty of existing commercial filter reference designs can operate well at 400 Hz.
How can designers meet the CE101 conducted emissions to meet MIL-STD-461G? This standard has applications from 30 Hz to 10 kHz for power leads, which also includes power returns. Their power comes from other sources that aren’t part of the Equipment Under Test (EUT) in surface ships, submarines, Army aircraft (including flight line aircraft), and Navy aircraft.
The main difficulty in meeting the standard will be the low frequency content of the noise signals. Usually, the 3rd, 5th, and 7th harmonics will be the problem frequencies. So, for 400 Hz power, designers must be able to attenuate the 1,200-, 2,000-, and 2,800-Hz harmonics.
The modern aircraft power industry is moving toward the realization of the More Electric Aircraft (MEA), the all-electric aircraft. To enable MEA, it will be important to have high power density and efficient power-conversion solutions. Besides high efficiency and power density, it will be critical for power converters to comply with strict military electromagnetic-interference (EMI) standards for the MEA.
A 400-Hz Aircraft Power Supply
How does one design a 5-kW power supply for aircraft applications? A boost power-factor-correction topology, the Delta rectifier, will comply with military standards for conducted emissions (CE). The design has a front-end rectifier for a 400-Hz mains power supply. For isolation and output dc voltage regulation, a full-bridge dc-dc converter that has a 99% efficiency, along with a high-frequency transformer, could be designed (see Reference 7).
In this topology, the 3rd-harmonic injection switches are connected in a delta configuration (Fig. 1).
The Isolated DC-DC Converter
There are two converter types — resonant and non-resonant — for high-power-density dc-dc converters. Resonant converters, like LLC architectures, are usually selected because of their very high frequency switching with soft switching. But since high-power-density, high-current transformers usually operate at a far lower switching frequency, the non-resonant dc-dc converter architecture was selected (Fig. 2).
Aircraft systems chose a 400-Hz frequency based upon two key parameters: mass and volume. Transformers and rotating machines, running at a higher frequency, led to reduced volume and mass.
Furthermore, a changing ac voltage led to an advantage of using transformers to change the voltage. High voltage with low current would now be able to travel longer distances over a smaller wire, and then become transformed to a safe, lower voltage for power distribution.
Read more articles in the TechXchange: Delving into EMI, EMC and Noise
1. “EMC Question for 400Hz Power System,” EMC Standards.
2. “Why Do EMI Filters Fail ?,” Astrodyne TDI.
3. “EMC Question for 400Hz Power System,” Interference Technology.
4. “New Considerations in the Input Filter Design of a Three-Phase Buck-Type PWM Rectifier for Aircraft Applications,” IEEE 2011.
5. “THD and EMI Performance Study of Foil-Wound Inductor of LCL Filter for High Power Density Converter,” 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia).
6. EMI 400Hz power sys a682005-214.pdf, International Journal of Circuits, Systems and Signal ProcessingVolume 9, 2015.
7. “Power Supply Design Considerations For 400Hz Aircraft Applications,” EPE’20 ECCE Europe.


Loadable Kernel Module sets Linux USER stack space as a non executable area. It will prevent normal stack overflow exploitation, this is not a 100% solution for buffer overflows.
Odysseus is a proxy server, which acts as a man-in-the-middle during an HTTP session. A typical HTTP proxy will relay packets to and from a client browser and a web server. Odysseus will intercept an HTTP session's data in either direction and give the user the ability to alter the data before transmission.
Internet Storm Center 2003/1/23
This particular form for XSS uses the common 'TRACE' protocol, which web servers provide for debugging purposes. If the 'TRACE' protocol is used (instead of the usual GET or POST), all data send to the server is echoed back to the client.


SAFER. CLEANER. BETTER. We are one of the very few Technology contractor’s that’s qualified AND licensed to perform all low-voltage work, security and
electrical systems. Many companies contract out their other services. Not here – we do it all. And there’s a reason why – we are in control of your system’s performance from the design to the wiring through to the installation and programming. Since just about every system is dependent on electrical power, we can be sure your power is delivered properly with the correct wiring paths, high-quality parts, extra power on demand and controlled interactions with all sensitive equipment. You can expect purified, optimized power for the ultimate picture and sound, regardless of system size or budget. Typical electrical contractors aren’t trained in the demands of a high-performance home automation, video, audio or lighting control system. When your system is built correctly right down to the electrical power, it makes a world of difference.


This is caused by electrical noise introduced into the USB port on the PC. Solutions are:
- Eliminate the source of the noise (paper shredder, fan, etc.).
- Do not use an AC adapter on your Vantage Pro console. Most noise is picked up on the AC adapter cable. Eliminating the adapter can prevent the entry point for the noise. The console's three C batteries can last up to one year and you will receive a message on the console when they start to get low.
- Attach a ferrite cylinder on the AC adapter cable to help filter out the noise. These can be purchased at many electronic supply stores. Digikey's part #240-2245-ND works well.


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SonicFFT: System Architecture for Ultrasonic-based FFT Acceleration
Welcome to an exciting new development in the world of scientific and engineering applications. SonicFFT is a cutting-edge system architecture that utilizes ultrasonic-based FFT acceleration to greatly enhance the performance and energy efficiency of integrated systems.
Developed by a team of experts including Darayus Adil Patel, Phuong Bui, Kevin Tshun Chuan Chai, and Amit Lal, SonicFFT is a compact-model based simulation framework that offers a unique approach to quantifying the performance and energy of an integrated system.
In this article, we will delve deeper into the innovative technology behind SonicFFT, as well as explore related topics presented at the conference where it was unveiled in January 2022. So, join us on this exciting journey as we explore the world of SonicFFT and its potential to revolutionize the field of FFT acceleration.
Overview of the FFT Process
The Fast Fourier Transform (FFT) is a popular and useful mathematical algorithm that is commonly utilized in engineering and scientific applications. By breaking down a complex signal into its separate frequencies, it makes it possible to study the individual elements of the signal. Computationally, this process is time-consuming and energy-intensive.
SonicFFT is a system architecture that uses ultrasonic technology to speed up the FFT calculation process, allowing researchers to make these calculations faster and more efficiently than ever before.
Ultrasonic technology is the foundation of SonicFFT's system architecture. This architecture is based on a miniaturized simulation framework which quantifies the performance and energy of an integrated system. Digital computing components are interfaced with an ultrasonic FFT accelerator, which harnesses high-frequency sound waves to reduce the amount of time and energy required for the calculations. SonicFFT is an attractive option for researchers who need to perform FFT calculations quickly and efficiently.
Apart from its speed and efficiency, SonicFFT also offers additional benefits. Its user-friendly design requires no special expertise or training. The authors of SonicFFT have developed a novel approach to automatically map legacy code to Fourier
Transform accelerators using IO-based program synthesis. This generates substitute adapters that make it easy to incorporate SonicFFT into existing applications. With its advanced ultrasonic technology and user-friendly design, SonicFFT is set to revolutionize the way researchers perform FFT calculations.
Ultrasonic FFT Accelerator System Architecture
The Ultrasonic Accelerator System Architecture is the foundation of a revolutionary approach to enhancing the FFT process. This architecture integrates digital computing components with ultrasonic accelerators to offer remarkable performance and energy efficiency.
A compact-model simulation framework is utilized to precisely calculate the system's performance and energy levels. This architecture has resulted in significant advancements in speed and energy conservation compared to traditional FFT methods, making it a useful tool for a variety of scientific and engineering applications.
Ultrasonic technology is a key component of the Accelerator System Architecture. The ultrasonic accelerators generate high-frequency vibrations to quicken data processing. These accelerators collaborate with digital computing components to expedite the FFT process. This integration has yielded tremendous gains in speed and energy efficiency.
The Adaptable Accelerator System Architecture is suitable for a wide spectrum of applications. Its ability to process large amounts of data swiftly and efficiently makes it ideal for signal processing, data compression, and image processing. Additionally, its flexibility allows for easy integration with existing systems, making it an invaluable asset for both new and existing projects.
The compact-model based simulation framework employed in the Accelerator System Architecture provides an accurate and efficient method for analyzing the system's performance and energy levels. This framework permits for rapid optimization of the architecture to reach the desired performance and energy efficiency targets. The use of this simulation framework guarantees that the system is always running optimally, delivering users with the most exceptional FFT processing experience possible.
FACC: Mapping Legacy Code to Fourier Transform Accelerators
The FACC system is a revolutionary development in the area of Fourier Transform acceleration. This approach enables legacy code to be automatically mapped to Fourier Transform accelerators, creating drop-in adapters that integrate seamlessly with existing systems
. By utilizing the power of Input-Output (IO)-based program synthesis, this technique offers a convenient way to take advantage of the advantages of ultrasonic-based Fourier Transform acceleration without having to replace the entire codebase.
FACC is a valuable asset for those who need to leverage the capabilities of Fourier Transform accelerators, but can't afford to rewrite their codebase. This system simplifies the implementation of Fourier Transform accelerators and makes them available to a wide range of scientific and engineering applications. In short, FACC provides a straightforward, efficient solution for exploiting the potential of Fourier Transform accelerators in existing systems.
Presentation of SonicFFT at Conference in January 2022
In January 2022, the scientific and engineering community eagerly anticipated the presentation of an ultrasonic-based acceleration system. Darayus Adil Patel, Phuong Bui, Kevin Tshun Chuan Chai, and Amit Lal showcased their innovative architecture, which included an overview of the Fourier Transform process, the ultrasonic-accelerated system structure, and a novel FACC approach for mapping legacy codes to Fourier Transform accelerators.
Audience members were highly impressed with the energy savings and efficiency presented by the authors. To demonstrate the effectiveness of their compact-model based simulation framework, they quantified performance and energy of an integrated system.
Furthermore, the presentation highlighted related topics from the conference, such as Efficient Preparation of Cyclic Quantum States and HAWIS. Until January 28, 2022, interested individuals can access the presentation videos, which include Regular Sessions, Special Sessions, Designers Forum, and University Design Contest, to gain a deeper understanding of the system and its potential impact.
Related Topics Presented at Conference
Exploring novel methods of engineering and technology, a conference presented several interesting topics. One of these was the Efficient Preparation of Cyclic Quantum States, which focused on approaches to create quantum states that have cyclic symmetry. The talk discussed different strategies, such as quantum circuits and algorithms, to achieve this objective.
Another presentation was the Hybrid Analog and Wireless Integrated Systems (HAWIS), which investigated the potential of combining these two technologies for more efficient and scalable systems. The difficulties of integrating analog and wireless components were discussed, as well as potential solutions and future directions for this field.
The Fourier Acceleration Code Converter (FACC) was another significant topic at the conference. This topic is closely linked to accelerating the Fourier transformation process. FACC is a cutting-edge approach to mapping legacy codes to Fourier transform accelerators, which can drastically improve the performance of existing systems.
The presentation delved into the technicalities of FACC, such as utilizing input-output-based program synthesis to generate replacement adapters. Overall, the conference provided a wealth of knowledge on emerging technologies and techniques related to engineering and technology, providing researchers and practitioners with a valuable opportunity to collaborate on new projects.
In conclusion, SonicFFT: a system architecture for ultrasonic-based FFT acceleration, presents an innovative solution for accelerating FFT in scientific and engineering applications. The system architecture utilizes a compact-model based simulation framework, which quantifies performance and energy of an integrated system. Additionally, FACC, a novel approach to automatically map legacy code to Fourier Transform accelerators, generates drop-in replacement adapters using Input-Output (IO)-based program synthesis. The authors, Darayus Adil Patel, Phuong Bui, Kevin Tshun Chuan Chai, and Amit Lal, presented SonicFFT at a conference in January 2022, alongside other related topics. With SonicFFT, the field of FFT acceleration is advancing towards faster and more efficient solutions, benefiting various industries and research fields.
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|AMD Achieves Leading Market Share for Thin Clients|
Thin clients, with little or no local storage, often serve as intelligent front-ends for server or cloud-based applications. Thin clients using AMD Embedded G-Series have a strong value proposition for immersive graphics in single- or multi-display configurations in the enterprise. Recent design wins with HP,
"The AMD Embedded G-Series SoC couples high performance compute and graphics capability in a highly integrated low power design," said
AMD G-Series SOC Ideal for Thin Client Applications
AMD thin client solutions continue to gain market adoption because of the move to cloud-based computing. Increasingly, thin clients are also being used for more complex and high performance tasks. This is especially true for devices incorporating x86 CPUs and sophisticated graphics. The surge of innovation in the desktop virtualization market has created new opportunities for powerful thin clients that are now capable of executing demanding tasks including computer-aided design and 3D modeling. Customers are also using AMD thin client solutions in financial and government services, call centers, kiosks, and hospitals, "smart" monitors and other multi-user, virtualized installations.
The AMD G-Series SoC also features enhanced security for enterprise IT operations, enabling security between the thin client and the server, and allowing only software approved by an enterprise's IT organization to run on the thin client device. It also supports enhanced power management technology to help manage energy costs and environmental impact across large deployments.
1. Market share determination based on AMD internal research
AMD, the AMD Arrow logo, and combinations thereof, are trademarks of


Conventional coordination covers all activities relating to the procurement, transport, transshipment, and storage of goods. Coordination is concerned with the material flow (raw materials, interim and final products) but also involves providing companies with services and information.
Nowadays, the development of electronic information and communication technologies affects all spheres of life. Naturally, it significantly influences economic life, including coordination. As a result, nowadays, it is possible to speak about electronic coordination as a highly prospective field for further development.
In researching the problem of electronic coordination, it is primarily necessary to dwell upon the methods traditionally used in related research. It is possible to use phone inquiries and face-to-face interviews with companies implementing electronic coordination in their business. Also, it is possible to interview management consultants and IT suppliers.
Nowadays, electronic information and communication technologies are widely used in coordination. As a rule, it is commonly used in buying, selling, and material-follow transactions. It is necessary to point out that coordination services providers use electronic coordination wider than companies running in manufacturing and trade.
The advantages of electronic coordination are clear in the current situation since it creates new operating models that provide a company with a competitive advantage compared to the companies using conventional coordination. It also allows development, efficiently managing larger entities, and correct information in constantly changing market situations.
Nonetheless, it is necessary to emphasize that electronic coordination is a relatively new field and is making its first steps in contemporary business. In such a situation, the obstacles and challenges companies face implementing electronic coordination are natural. These obstacles and challenges may be singled out: scarce financial resources for investments, lack of capabilities of network parties, lack of standards, and challenges in integrating inter-company information systems.
However, electronic coordination is still quite popular due to the perspective of business process re-engineering skills since it allows the use of technologies to support business processes.
Thus, electronic coordination is a very perspective field that needs further research to provide better opportunities for its proper implementation and wide use.


PL2303HXD / EA / RA has 8 software controllable “General Purpose Input Output, GPIO” control signals pin, you can use this API to control
-direction: input or output
-logic level: high or low
GPIO Pin define:
5. GP4--RI (*)
(*): In general, serial port control input signals - CTS, DCD, DSR and RI are used as MODEM control signals , However, if the MODEM control signal are not needed, these signal could be used as general-purpose input/output signal(GPIO)
You can download the source code from Prolific web-site, and then develop your own android application
- USB Device with PL2303HXD, PL2303EA or PL2303RA controller chip
NOTE: PL2303HXA and PL2303XA are not supported (Discontinued Products)
- Android-Powered Device (Tablet/Phones) with USB Host Mode Support
- Android 3.2 and above OS versions
Prolific PL2303 USB-GPIO is a free software application from the Components & Libraries subcategory, part of the Development category.
The app is currently available in English and it was last updated on 2015-02-02. The program can be installed on Android.
Prolific PL2303 USB-GPIO (version 220.127.116.11) is available for download from our website.
Just click the green Download button above to start. Until now the program was downloaded 8 times.
We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.


Stop AT&T's Takeover of T-Mobile
AT&T wants to convince you that its takeover of T-Mobile would be good for jobs, innovation and the economy, while saving you hundreds of dollars on your mobile bills.
Don't believe the fairy tale. If this deal goes through, just two companies, AT&T and Verizon, would control nearly 80 percent of the mobile market in America. With too few choices, mobile phone users would face higher prices, poorer service and less innovation.
If enough mobile phone users protest to Congress, we can stop AT&T's takeover of T-Mobile. (Learn more here.)


Many audio experts claim that decoupling, or isolating, a loudspeaker from the surface it is resting upon has a positive effect on sound quality. Loudspeakers that are decoupled from their resting surface via loudspeaker isolation pads have tighter bass response and improved stereo imaging.
Loudspeaker isolation pads work on the principle that speakers should impart their energy to the air, and not to the surface they are resting upon. Placing a pad constructed of suitable material on the base of the loudspeaker can help absorb unwanted vibrations and suppress resonance. The use of isolation pads effectively decouples the speaker from the floor of a structure and prevents the transmission of unwanted vibrations and noise through the structure.
For the above reasons, using isolation pads to enhance the performance of sound systems is of paramount importance to speaker manufacturers, system installers, and audio enthusiasts alike.
CRG fabricates high-quality loudspeaker isolation pads from Sylomer® material. Sylomer® is one of the leading materials in the vibration isolation market. Sylomer® is an elastic and versatile polyurethane material with a mixed-cell pore structure. The material offers an excellent combination of dampening and elastic characteristics.
A major advantage of Sylomer® over other dampening materials is that the performance of the material is predictable. Depending upon the application, structure-borne noise and vibration can be attenuated by up to 95 percent. Due to the vibration suppression characteristics of Sylomer, low natural frequencies are assured so that optimal isolation values are achieved.
CRG can readily fabricate Sylomer® isolation pads designed for almost any loudspeaker system. Depending upon the speaker size and specific application, we can adapt Sylomer® to specific applications by selecting the right material type, thickness, and density. In applications which involve loudspeakers mounted onto stands, Sylomer® pads can be fabricated which effectively decouple the speaker from the stand. In applications where loudspeakers are hung, Sylomer® hangers can be fabricated to provide effective speaker isolation from ceilings or walls.
Where the listening angles of loudspeakers need to be adjusted to achieve optimum results, CRG can fabricate wedge-shaped isolation pads which can accommodate a variety of listening angles.
Speaker systems for which CRG can fabricate isolation pads include the following:
Auditorium and concert hall systems
Industrial and commercial sound systems
Home audio and audiophile systems
Automotive vehicle sound systems
If you are a manufacturer or installer of loudspeaker systems, CRG can work with you to fabricate the right Sylomer® isolation pad for your system. To find out more about loudspeaker isolation pads from CRG, please contact our sales department at email@example.com.


ADAS ONE, Inc. CEO (Dr.Kim Tae Geun), announced that AONE, the advanced driver assistance system (ADAS) for smartphones, won the Grand App Prize at the 2017 Smart App Award sponsored by the Korea Internet Specialists Association.
371 companies participated in the event with 239 app competitors in 7 categories and 32 fields.This year’s Smart App Awards was hosted by the Korea Internet Specialist Association and the EYE awards committee, with an evaluation committee composed of 3,000 IT experts .
AONE won the Best Award in the Smart App category, which allowed the product to be successfully funded and launched last year at KickStarter, a global cloud funding site. The evaluation committee described AONE as an intelligent ADAS system which can contribute to driver’s safety thanks to its LDWS, FCWS, FVSA functions.
AONE is also one of the world’s first ADAS solutions which can support ADAS functions by simply using a smartphone application. Indeed, AONE was developed to provide convenience to the driver and to make safety functions accessible at a low price.
In addition to ADAS features, AONE App also offers Ecall function in case of emergency, vehicle diagnostics, video recordings, and vehicle parking localisation. The device is also easy to install since it was designed with the user’s safety and convenience as top priority.
[Contact] ADAS ONE Team: 02-2279-1400 / email@example.com


Living in the Internet of Things era
Back in 1926 Tesla envisioned something that sounded suspiciously similar to what we today call the Internet of Things (IoT). To him, the ability of devices to transmit wirelessly would naturally lead to an interconnected world of instruments, a technological brain present in our mere pockets.
“When wireless is perfectly applied the whole earth will be converted into a huge brain, which in fact it is, all things being particles of a real and rhythmic whole .… and the instruments through which we shall be able to do this will be amazingly simple compared with our present telephone. A man will be able to carry one in his vest pocket.”
IoT is not so much of a discovery, as a continuous evolution of the presence of cyber devices in our physical world. It is often argued that the IoT era begun between 2008 and 2009, when the number of devices connected to the internet exceeded the world population. However, to fully understand this phenomenon, we need to take a look at more recent discoveries. Today, the internet of things is not just about the internet and not just about things.
The commercial Internet of Things
Admittedly, the first example that comes to mind when talking about IoT is the abundance of smartphones and wearables that people today associate with activities of their everyday life. Although smart-phones primarily collect and share information through the internet, there is a variety of technologies that enabled the proliferation of commercial IoT. Close-range transmission for the communication between wearables and smartphones is performed using Bluetooth or RFID. Simple, yet powerful, microcontrollers, such as an Arduino, can be used to convert our homes to temples of automation, where every kitchen appliance can be remotely controlled and preprogrammed, or, as we call them, smart-homes.
The industrial Internet of Things
However, industrial Iot, often referred to as IΙoT, is where the high stakes are. The transport, energy and industrial sectors, such as the healthcare industry, have been impacted by the IoT so heavily due to the extensive use of sensors and other physical instruments, that they have experienced what we often call a digital transformation. Real-time, reliant, massive communication is immensely important when one realizes that applications in this area are related to autonomous driving or energy production at a national level.
What’s new in IoT technology?
There is a variety of factors that led to the evolution of IoT and an ever-increasing variety of factors that will fuel it in the future. To begin with, this proliferation of connected devices would not have been possible if it weren’t for the ability of technological companies to produce low-cost, efficient instruments with internet-connectivity. The improvement of communication technologies, with 5G ensuring fast and almost ubiquitous connectivity, enabled the vast employment of these devices. Today, advances in Big Data analysis and Artificial Intelligence, make it possible to take advantage of the enormous amount of data collected by IoT, as well as design automated systems that can adapt to their environment without human intervention. It only takes a look at IBM’s cognitive IoT platform to realize the potential of this technology.
The internet of problems
If your devices have the ability to connect to the internet, then the internet has the ability to connect to your devices as well. This means that your smart-phone, kitchen appliances or you future self-driving car, can be compromised and controlled by a hacker. Although companies struggle to provide products with safety guarantees, communication over the internet is inherently vulnerable. The situation becomes even worse, when one considers the fact that the majority of devices run on outdated and unprotected software, as is the case with a surprising large number of Android smartphones. The above vulnerabilities suggest that IoT can be harmful both for the security and privacy of consumers and industries.
There is another caveat in the fast and bottom-up evolution of IoT. As different companies enter the IoT scenery by introducing their products and data into the market, little effort has so far been given into designing common interfaces. By employing different communication protocols and storing their information in custom formats, they have created an internet of things that is as fragmented as the market. Specialists warn that this can lead to a Digital Babel, where ubiquitous computing will not be possible to achieve.
A shift of focus
Cisco recently introduced a term that created a slight confusion: the Internet of Everything (IoE). As IoT already includes all possible devices, IoE is often used as a synonym for IoT. A simple re-branding of the existing technology. However, IoE signifies an essential shift in the business practice of IoT. It captures a broader view of the concept of interconnection, by laying importance equally on things, people and processes and trying to devise intelligent connections among them. By motivating a less passive approach to the adoption of new technologies, it comes in contrast to traditional, conservative business approaches. In the IoE era, waiting for new technologies to enter and disrupt the market, and then, incorporating them into business policies will no longer be a sustainable approach.
When Amazon introduced and popularized Amazon Echo, it made an important step towards ambient computing. In the past, connecting to the internet meant that you were sitting in front of a computer. Then came smartphones, and people were able to be online from practically everywhere. When virtual assistants, such as Siri, entered the market, connectivity became even more seamless, as all you needed was to speak to your phone. But the ultimate goal of IoT technology is to “be in the air”. To not change our environment, but become part of it. Tesla talked about our instruments being particles of the earth, remember?