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Changes made between
Sun Sep 28 13:06:19 EEST 2003
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Thu Oct 30 19:50:38 EET 2003
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Acoustics page
Audio circuits to build
- Balanced Microphone Preamplifier - A single-channel, balanced in/out preamplifier with 48V phantom power, rumble filter and low rolloff filter
- Balanced Buffered Electret Microphone - An inexpensive, phantom powered, small-diameter, condenser microphone
- Philips' Dynamic Noise Limiter - This four transistor circuit is claimed to be developed by Philips to improve the subjective signal-to-noise ratio of cassette reproduction. It works on playback only and therefore can be used with any source material. Indeed, it can improve the sound of not only tape playback but any source where broadband noise (hiss) is troublesome - noisy radio signals are examples.
- The d-box in a better look - Everything described here relates to the Mediamaster 9200, 9500 and 9600 as well as to the d-box available until december 1999. This page described how to add S/P-DIF Output to this DTV box.
- High-voltage circuits for electrostatic microphones - circuits that can generate the required high-voltage for electrostatic microphones used in bat detectors, circuit can be used to generate a voltage of about 70V using a current of about 4 mA at 6V input voltage
Hearing and psycoacoustics page
- The Binaural Source - Company that sells binaural recordings. Nine Binaural Demo Tracks for Free Downloads plus Search Engine.
- Understanding Noise Weighting Curves - Microphones, amplifiers, and recording systems all add some residual noise to the signals passing through them, but the noise generating mechanism and so the spectral content of the noise is different in each case. If noise measurements are to have any real value, allowing fair comparisons of the true noise contributions from different types of equipment, they should give a figure that is representative of what we hear, and the first step towards this is the use of a Weighting Filter , which emphasises some frequencies more than others.
Hifi page
Professional audio page
- Phoenix Light & Sound Bulletin Board - A bulletin board dedicated to the live sound community of the world!
- Avoiding a Major Mistake That Musicians Can Make - Do you, the musician, desire that everyone in the audience enjoy your music at an appropriate volume with good tone quality and with all parts in musical balance? In the ideal situation, the performance room's acoustics would be sufficient to achieve these goals. In reality, even a concert hall cannot satisfy the needs of every performance, much less a church sanctuary, a school theater or a multi-purpose room! When the acoustics are not sufficient, a sound reinforcement system is required.meaning microphones, mixers, amplifiers and speakers. Since musical sounds are complex, reinforcing them is a challenge. Quality equipment and a knowledgeable, experienced audio engineer are foundational to accomplishing this task.
- Basic P/A Systems Primer - from Yorkville
- Crossovers, Equalizers & Compressors - hat they are and how to use them, pdf file
- Free Learning Resources: Learn More About Sound Engineering! - Are you just getting started into sound engineering? Do you want to learn some of the basic essentials that every sound technician should know? This is a list of professionally written, quality audio engineering educational literature available at no charge covering many important topics basic to the operation of sound reinforcement systems.
- JBL Professional Technical Library
Speakers page
Automation Page
- BACnet - This website is dedicated to providing the latest information on BACnet - A Data Communication Protocol for Building Automation and Control Networks.
- BACnet: Answers to Frequently Asked Questions
- BACnet Interest Group Europe eV
- BACnet Interest Group - North America - BIG-NA is a non-profit organization dedicated to facilitate the open exchange of user ideas and experiences as the complete interoperability of building systems is achieved using BACnet, A Data Communication Protocol for Building Automation and Control Networks.
- Pilz Support - product news, support, technical information and discussion forums on safety related CAN
- SafetyBUS p Club International e.V. - This site is about safety-related CAN. With the introduction of IEC 61508 (Functional safety of electrical/electronic/programmable electronic safety-related systems) new safety-related technologies are no longer held back, allowing the utilisation of machine safety fieldbus, such as SafetyBUS p from Pilz, which already has a proven installed base.
- 3V/5V DACs Support Intelligent Current Loop - This application note explains 4-20mA current loops and intelligent transmitters and explains their need for high-resolution low-power DACs.
- A Brief History of Feedback Control - This pdf document tells about philosophies of classical and modern control theory
Electronics basics
- Basic Tools Required to Build Electronic kits - In order to successfully construct a kit or project you will require some basic tools.
- How to Understand, Present and Invent Electronic Circuits - This building electronics course is designed as an alternative to the classical approach. Based on human imagination and intuition rather than formal reasoning, the tutorial is intended for creatively thinking students, teachers, hobbyists, inventors and for all those who do not feel happy with traditional formal explanations of electronic circuit phenomena. The course proposed is implemented as an interactive flash multimedia product consisting of a lot of action-script controlled animations, hyperlinks, hidden explanation buttons and sounds associated to the circuit operation.
- Soldering Process - This document will aid you in learning basic soldering skills. It should enable you to solder wires to electrical connectors, splices, and terminal lugs.
- The Printed Circuit Board Primer - A fine printed circuit board (PCB) is a mixture if high art, and solid engineering. Here is a short primer on what goes into the making of a PCB, the terminology, and the features that enhance reliabity, and lower cost.
- Lazar's Power Electronics Corner - Virtual power electronics library: switching power supply circuit, magnetics and pcb design basics, topologies app notes, free software, simulators and calculators, engineering references, news, links and other info for power supply designers and users.
Engineering career links
Car Electronics Page
- autonewsonline.net - an online publication catering to the automotive interests of young adults
- Car and Deep Cycle lead-acid batteries - Car and Deep Cycle lead-acid battery answers to Frequently Asked Questions (FAQs), tips, information, references and hyperlinks are contained on this consumer oriented Web site about car, motorcycle, truck, marine, recreational vehicle starting and deep cycle applications.
- OBD-II Acronyms and Jargon
- The ODB II Home Page - Dedicated to helping the home and independent technician understand and use OBD-II technology
Electronics circuit sites
- Delabs electronic circuits archive - over 120 circuits of industrial electronics or instrumentation in orcad-pdf format
- Delabs Electronic Circuits - over 120 circuits of industrial electronics or instrumentation in orcad-pdf format
- eCircuit Center - A free source of SPICE circuit files and tutorials for the hands-on learning of electronic circuits. Circuits you can design, test and modify using the SPICE simulator: Opamps, filters, sensors, PID controllers, etc.
- Electrical/Electronics Project Designer's Page - Electrical and Electronical Applications prepared by using Assembler Programming Language. Motor Control,Serial Communications,Temperature Control,Basic Assembler Applications,I/O Ports Design,Timer and ADC.
- Electronicfun.4t.com - collections of circuit from the net
- Electronics Zone - Electronic circuits, kits, do-it-yourself, circuit diagrams and electronics hobby schematics homepage
- Erlich Industrial Development Corporation Electronics Kits - wide variety of electronics kits, circuit diagrams of many kits available on-line
- EPROJE - electronics projects in Turkish language
- FC's Solar Circuits
- Freeinfosociety Schematics Archive - over 200 electronics circuits archived to this site
- HobbyChip - In HOBBYCHIP web you will be able to find Electronics for the hobbyist. HobbyChip designs electronic circuits and schematics for hobbyists, electronic kits, electronic schematics for home, domotics, PCB's, software for microcontrollers,... Most of Hobbychip's designs for hobbyist are based on software for PIC microcontrollers.
- PI Engineering - Y-mouse devices that allow multiple peripherals to operate from a single port; monitor splitters, keyboard splitter, mouse splitters, PS/2 to USB adapters for barcode reader/scanners and other PS/2 devices, custom keyboards, programmed IC chip sets, component boards
- PI Engineering - Y-mouse devices that allow multiple peripherals to operate from a single port; monitor splitters, keyboard splitter, mouse splitters, PS/2 to USB adapters for barcode reader/scanners and other PS/2 devices, custom keyboards, programmed IC chip sets, component boards
- Lopl Digital Electronics Collection - Lopl.net collects more than 4500 completed projects, about electronic, computer, telecommunication, health devices, Opto Electronic (Laser & Led), Infrared, PDA, Solar, Power, Music, Image, Video and more about electronic and computer.
- Lovers of Electronics RF Circuits - The RF section contains many unique circuits including 10 KM range FM transmitter + R/C and Miniature FM Radio and many other such mini circuits
- MattWeb - balanced input microphone preamp, phantom-powered electret mic, propeller clock
- Microchip Application Notes
- MicroPlans - Microcontroller projects(in spanish): dimmer, thermometer, speedometer, tachometer, temperature log, intelligent radio bacon, etc.
- Pedro and Patrick world of Hobby Electronics
- Per-Anders Sj�str�m's hifi pages hifi projects - LM3886 power amp, rectifier bridge, phono amp, power supply, headphone amp, digital/analog converter
- Sam's Schematic Collection - various schematics and diagrams
- The Free Information Society - : A useful and interesting science and engineering website with a large circuit schematics archive (almost 200 circuits).
Links to electronics industry companies
- Businesslink Online Directory - BusinessLinx Directory covers over 1,000 locations in the UK and is currently listing over 10,000 companies.
- Economic Development Growth and Education Group - Interactive Business Directory on the Web! Manufacturers, Wholesalers, Distributors, Resellers
- PCB Design Service Bureaus - This web page lists very mnay companies that do PCB design services. This list covers very many countries.
- Ampron Sensitive Components Co., Ltd. - manufacturer of PTC thermistor in China, PTC thermistor provide overload and short circuit protection of general circuit, telecom equipment, as well as time delay of lighting, thermal protection, etc.
- Fibra-Brandt Semiconductors - thousands of Obsolete and Hard to Find Electronic Components, Semiconductors, Integrated Circuits, Transistors,Inductors & Capacitors, manufacturing of hard to find devices in large or small quantities
- Henan Jinguan Wangma information industrial Co.,Ltd. - manufacturing metal oxide varistors and metal oxide surge arresters in China
- JMC Products - thermal solutions, AC fans, DC fans, heat sinks, CPU coolers, blowers, operates around the world
- Kingtronics International Company - manufacturer of SMD Ceramic Capacitor in Mainland of China, offer all kind of size for SMD MLCC, such 0402, 0603, 0805, 1206, 1210, 1808, 1812, 2220, voltage offer from 50V to 4000V
- Oren Elliott Products, Inc. - manufactures air-dielectric variable capacitors
- OSRAM Opto Semiconductors - LED vendor
- Philips - wireless, audio/video, multimedia, microcontrollers, general purpose, discrete
- Pletronics Inc. - USA based manufacturer of frequency control products like crystals, crystal filters, and crystal oscillators
- SBtron - manufacturer of oscillator, crystal, SAW, TCXO, OCXO, VCO, VCXO, and resonators
- Shaanxi Huaxing Varistor factory - varistor arresters used in surge protective devices
- Silicon Integrated Systems (SiS) - PC cchipsets, graphics controllers, SoC solutions, flash disk controller, serial ATA, WLAN
- Tcpipchip.com - TCP/IP chip that make a GPRS phone can connect to web without the help of PC, any small 8 bit MCU can connect and send/receive data via internet with it's built-in PPP,DNS,HTTP,TCP/IP stack
- Thermal Transtech International Corpotation - manufacture of heat column cpu cooler, heat pipe technology
- Viking Tech Corporations - miniature components, high frequency components, precision resistors, current sensing resistor, inductor, capacitor
- West Coast Magnetics - power and RF magnetics including RF inductors, power inductors, current transformers, common mode chokes, switch mode transformers and 60 Hz transformers
- Concept Tech Corp. - Networking & Communication Cabling Accessories, Cat.5e/5E/6 Cables, Cat. 5e & 6 Patch Panels, Telco Patch Panels, Telephone socket & Tel. cords/plug & Cabling Connectors & Adaptors, RJ-45, Fibre Optical Cabling Accessories
- netCOMPONENTS Electronic Components Database - The worlds largest destination for the sourcing and procurement of electronic components in a direct, disclosed (non-anonymous) and vendor-neutral environment. This site needs registration.
- Ad-Tech Electronics - electrical and electronic components
- Compass Technologies International LC (CTI) - broker semiconductor, circuit board, and process control equipment
- DJM Electronics - manufacturers representative for the RF, Microwave and Electromagnetic Compatibility (EMC) communities
- GlobalTechElectronics.com - plasma TVs, LCD monitors, projectors, mini PCs, tablet PCs
- Moyer Elecronic Supply - wholesale distributor of electronics components
- PartsCloset.com - Hard to Find New and Used Computer Parts, over 20,000 new and used computer parts for maintaining old computer systems
- Pars ConneXion - serving the demanding needs of audio hobbyists worldwide
- Perllo Technologies - Distributor of electronic components including transformer, transponders, inductors, crystals, magnetics, wire harnesses, connectors, and custom parts. High-quality, low-cost components with manufacturing facilities thougout Europe.
- surplusEq.com - Refurbished fiber optic fusion splicers and quality test equipment
- The MicroController and Embedded Systems Store - Toys for Embedded Systems Designers - Tools for All Major Microcontroller Architectures, MicroController Pros Corporation (�CPros) is an authorized distributor for many microcontroller tool vendors
- Asan Elektronik - ECA Electronic GmbH Turkey Distributor, hobby books, TV service mode books, electronic component
- Bernhard Naber - electronics devices and components, also with some obsolete and hard to find components
- Demotech Electronics - EDA Tools in Scandinavia, Prototype boards and programmers for PIC, AVR, 8051 and MSP430
- eShop.bg - a stock exchange web site for Bulgarian and foreign companies working in the field of electronic components and materials, spare parts, audio-video equipment etc.
- All U Wanted - All U Wanted is a sourcing company in India. It specializes in sourcing of Electrical, Elctronic components as well as Information retreival. Product lines include biometric systems, ICs, Relays, obsolete items, Computer related items, Software etc.
- Asia Magic - peripheral manufacturers distributor in Hong Kong, worldwide distributor of digital cameras and USB products
- Beijing Chang Da Co., Ltd. - one of major agency of name-brand IC products companies in China
- HoBid.com - an online global marketplace for electronic components, connect worldwide electronic component buyers with 1100 registered suppliers
- IDETC Electronics Co.,Ltd. - of most kinds of brands of electronic components
- Central Caeolina Scale - Industrial Scales, Retail Scales and Customized Weighing Systems, sales, service, calibration and rentals
- CL System - compact and smart module that will turn your PC or laptop into a fully-functional Digital Oscilloscope , a Programmable Signal Generator and a Frequency Spectrum Analyser
- Erlich Industrial Development Corporation - computerized lab equipment, accessories and sensors, many types and styles of electrodes sensors and probes, makes also custom proble products
- Less EMF Inc. - Offering electromagnetic field meters (gauss meters, magnetic electric and rf field strength meters) and electromagnetic field shielding for speakers, wiring, RF etc.
- SCL Sencera Co., Ltd. - manufacturer and wholesale of various sensor elements such as shock sensor, humidity sensor, alcohol sensor, Alcohol tester module, temperature sensor, air pressure sensor, humidity module, ultrasonic transducer, gas sensor, Atmospheric pressure sensor, and Password shock detector
- Smart Sensors And Transducers Ltd (SSNT) - Load Cells, Pressure Transducers, sensors, marketing the products in India as well as abroad
- United Electronic Industries - Data acquisition hardware and software for scientific and industrial applications.
- Yaohua - the largest manufacturer of weighing indicator in China
- Audiokits.com - Audiokits specializes in DIY audio kits, capacitors, power transformers, printed circuit boards and audiophile-grade parts and accessories.
- Cana Kit - educational and professional electronic kits, electronics modules
- Carl's Electronics - over 200 electronic kits, electronic plans, spy, and surveillance gadgets, robotic kits
- ElectronicsUSA.com - amateur radio products, electronic kits, electronics gadgets, designs and sells products, digital clocks, digital timers, LED art clocks
- Electronics Zone - Electronic circuits, kits, do-it-yourself, circuit diagrams and electronics hobby schematics homepage, electronic circuits, design & consulting services
- Erlich Industrial Development Corporation Electronics Kits - wide variety of electronics kits, circuit diagrams of many kits available on-line
- Evolution Robotics - develops and manufactures multi-functional personal robots for the home and workplace and distributes them via its Web site and through a mix of consumer electronic retail stores, catalogs and online merchants
- FM-Transmitter.com - amateur radio kits, FM transmission and broadcasting equipment
- Futurekit.com - Future Kit electronics kits, Maxx Tronic electronics modules and kits, Maxx Flying parts for radio controlled models
- G.P.E. Tutto Kit - Italian web site whith more than 500 electronics kits and items
- HobbyChip - HobbyChip designs electronic circuits and schematics for hobbyists, electronic kits, electronic schematics for home, domotics, PCB's, software for microcontrollers
- Ramsey Electronics - large selection of hobby electronics kits, maker of FM transmitter kits
- RobotBooks.Com - robotics kits, robotics books, toy robots
- SERIElectronique - training systems and evaluation boards for 68HC11, 68HC12, 8051, VHDL , CAN bus ,Robot kits, I2C , CAN , USB , RS 485 and IRDA
- Alliance Datacom Repair Center - Certified Cisco repair depot offering service, repair & calibration. Repair depot for RBOCs, CLECs and ISPs, telephone companies. Repairs 3Com, Bay Networks, Cabletron, Cisco Systems, General Datacomm, Lucent, MICOM, Motorola, Newbridge and Nortel.
- Headsets Direct - specialist in the headset industry, providing commercial grade products, at discounted pricing, Plantronics Stocking Distributor and a GSA contract provider
- KEI Telecommunications - networking services to private and public businesses and organizations in USA, consulting, design, and installation of voice and data structured cabling systems and hardware configurations such as Ethernet, Wireless LAN, Token Ring, FDDI, and ATM style infrastructures
- Nokia Cellular Phones United States
- RagingWire Telecommunications, Inc. - flexible managed services and data center infrastructure solutions
- Round Solutions - design, manufacturing and distribution of telematics hardware especially GSM-GPRS and Machine-to-Machine (M2M)
- Rysham - reselling & installation then after sale services (fixing,repare & maintenance) of telecom device in Egypt
- Shenzhen Meiyitong Electronic Co., Ltd. - design, manufacturing & marketing of the cellular phone accessories
- ElectronicsUSA.com - amateur radio products, electronic kits, electronics gadgets, designs and sells products
- Elektrobit - radio modems, transcoders
- FM-Transmitter.com - amateur radio kits, FM transmission and broadcasting equipment
- HobbyTron.com Store - popular Ramsey Kits, HAM radio, AM/FM transmitters, as well as tons of other electronic project goodies
- Kenwood Comunications Corporation - amateur radio and mobile radio
- Morcom International - radio communications, defense electronics and meteorological equipments
- North Country Radio - RF, Video , and Specialty Electronic kits for Amateur and Experimental use
- OPHIR RF - designs and manufactures high power, solid state, broadband and band-specific rf and microwave amplifiers for wireless, defense and EMC applications, products range in frequency from 10 kHz to 8 GHz, with power levels from 1 Watt to above 2 kiloWatts
- Radio-Tech Ltd. - radio modules, radio modems, antenna, RF telemetry
- Ramsey Electronics - large selection of hobby electronics kits, maker of FM transmitter kits
- Satel - radio modems
- Sigtek - Software Radio Company
- Spezialantennen BAZ - antennae for the amateur radio in the field VHF, UHF and SHF in Germany
- Vertex Standard - maker of VHF and UHF radio phones, was earlier known as Yaesu
- Yeasu UK - radio communications
- Yaesu USA - radio communications
- Taiwan Sandy Ind. Co,. Ltd. - plastic molds and finished goods using plastic, silicon or other polyesters
- AccelThermal - Accel Thermal is a wholesale heatsink manufacturer offering heatsink design, aluminum heatsinks, custom heatsinks, clip heat sinks, aluminum extrusion profiles, CPU cooling fans, heatsink fans, thermal management, electronic cooling, thermal interface and phase change materials.
- Altec Electronic Incorporation - Aluminum Extrusion Heatsink suppiler
- East Asia(GD)-Electronic Ltd. - selling power inverter modules, power modules, switch timer, audio amplifier modules , radar movement detector and wireless video
- Elpac Power Supplies - Elpac designs and manufactures AC DC power supplies and custom docking stations.
- ENES Corporation - Manufacturer of Infrared Remote Control for most applications
- H & T Electronics Co.,Ltd. - PCB products 2-14 layers per customer specifications, located in Taiwan
- Laipac Technology - GPS Global Positioning Systems & Wireless Technology
- Lampex Electronics Ltd. - LCD, mini printer, graphic LCD, embedded systems, VLSI development
- Milford Instruments Ltd - BASIC Stamps and Accessories, LCDs, Robotics, Animatronics, PIC, Ubicom and ROM Development Tools, DMX-512 protocol converter
- PCB Design and Fabrication web site - PCB Design, Fabrication and assembly Services for small, medium and large electronic and computer companies all over the world
- Synometrix - turnkey Industrial Electronics product sourcing, systems integration, product development, and contract manufacturing in Taiwan and China, end-to-end business and IT solutions, IT consultancy
- Ternary Technologies - Ternary Technologies is an ODM/OEM contract manufacturer with in-house Industrial Design, Mechanical and Electrical Engineers providing full product development services operating in Malaysia.
- Jinda Battery Co.Ltd. - rechargeable LION, NI-CD and NI-MH batteries
- SUNDA (Singapore) Corporation Pte Ltd - industrial batteries and car batteries
- Peak Consult Int. - audiophile speakers
- Velodyne Acoustics Inc. - loudspeakers, subwoofers
- CAV High End Audio Equipment - Class A amplifiers, integrated amplifiers, DACs, preamplifiers, bookshelf speakers, floor standing speakers, balanced interconnects and power cords
- ECS Amplifiers - Hi-End audio poweramplifiers
- Kenwood USA
- Digiram - Digital audio, digital audio networking, computer audio, sound cards, professional audio, audio over Ethernet
- Steinberg - Cubase music production software
- AudioGold - a hi-fi shop in London specialise in secondhand equipment from all periods - including 1970's and 80's silver machines, reel - reel, valve equipment, turntables, hi-end audiophile gear and rare collectables
- Audiogon - high end audio marketplace
- Bob's Audio Restoration and CD-R Transfers - Professional audio cd-r transfers of cassette and reel to reel tapes, 78's, 45's, and 33 rpm records. Tick, pop, and hiss removal services available.
- Digital Acoustics - home theater systems company
- Million Interwork Sdn.Bhhd. - a professional manufacturer of T-Yokes for Loud-Speaker and alarms magnet driver in Malaysia, T-Yoke uses in home speaker, car speaker, Hi-Fi speaker, Sub-woofer, car alarms, etc.
- Stereocilia - manufacturer of custom studio monitor speaker stands
- The Binaural Source - Company that sells binaural recordings. Nine Binaural Demo Tracks for Free Downloads plus Search Engine.
- CrossBar Media - Avcast� enables the distribution of broadband video, audio and infrared control signals over existing coax cables in the home
- FrameRate - solutions for multimedia delivery
- DVD Infinity - DVD Production services for the home, corporate and professional markets, DVD productions from other formats such as 9.5mm, 16mm, 17.5mm and 28mm films, video (broadcast, professional and domestic) and stills(photos, negatives and slides)
- Dafeland Inc. - surveillance system DVRs
- TVBlanket - The TVBlanket is an electronic device that automatically detects and blocks commercials while you are watching television.
- World Satellites - Satellite Tv Installation, Sale, Services in Australia
- www.everprocam.com - a professional supplier for security products from China
- Racal Instruments - general purpose test equipment, automatic test equipment, VXIbus modules, laser diode and photonics test systems and burn-in stations, chassis, switching, and turnkey test system integration, mobile phone network test instruments
- Capovani Brothers Inc. - buyer, refurbisher and seller of used semiconductor and optoelectronic manufacturing equipment
- Dipole Tech Embedded Solutions - 8051 based custom development boards, software, programming, code and PC boards available
- J.M. Industries - large inventories of semiconductor manufacturing equipment, guaranteed refurbished semiconductor manufacturing equipment
- Plastronics Socket Company, Inc. - designing, manufacturing and marketing burn-in sockets for BGA, QFN, QFP, LCC, PLCC, SO, SSOP and LGA packages
- Probyte - microcontroller programmers and development tools in Finland
- ProgShop.com - universal chip programmers (at USB and parallel port), cheap microcontroller and eprom programmers, plcc/smd adapters and accessory for chip programming, chips
- Sadhana Energy Devices - Digital Soldering Station, Desoldering Tool, Solder Bath
- Scientific Ambala.com - Manufacturers and Exporters directory of scientific instruments and equipments
- Semiconductor Equipment Sales Associates (SESA) - a Silicon Valley-based Manufacturers Agent and Distributor for products directed toward Back End Test and Finish processes, customers are primarily semiconductor manufacturers and users, specializes in Lead Inspection, Lead Conditioning and Tape and Reel systems, also sell and service laser and ink markers and supplie, also provides refurbished equipment and spare parts from various manufacturers
- Serie Electronique - electronic training systems for for training and used only by schools or universities
- Sun-Up Software - Sun-Up Software is the creator of PCB View Station, software used for design verification, board fabrication and layout checking, component locating, and troubleshooting.
- Verity Systems - Degausser Specialist, manufacture and sell degaussers and bulk tape erasers
- Zuken - PCB/MCM/HIC software in the field of electronic design automation (EDA), provides solutions that maximize the efficiency of the design and manufacturing processes of electronics companies
- Confi'Hastes - insulators and fence posts for electric fence
- GeneratorJoe - sell, rent and lease emergency standby electric power generators and transfer switches of all types, portable, standby, stationary diesel and propane electric power generators for home, industrial, RV, commercial, mobile and marine use
- Henan Jinguan Wangma information industrial Co.,Ltd. - zinc oxide arrester, varistor, SF6 current transformer ,composite insulator, box type transformer station, electronics components, computer software
- Sachwin Products, Inc. - Electrical control panels for service of industrial or commercial electronic plastic access doors and covers for walls and ceilings. Suppliers electrical supplies to hardware stores in USA.
- Sadhana Energy Devices - Solar photovoltaic power generation for solar street lights, garden lights, lanterns and home lighting, UPS and inverters, light controller, home security, soldering and desoldering aids
- Caen Engineering - data storage solutions
- Data Recovery AID - Data recovery for both physically and logically damaged hard drives, RAID arrays, laptops, CD/DVD and virus data recovery.
- FireWire-1394.com - Source for all types of FireWire DV capture and editing hardware and software plus DVD drives and authoring products.
- I-Tech Company - Industrial Computer Rackmount LCD Monitors, keuboard, rackmount KVM units for saving space on communications racks, rackmount KVM switches
- My-eTrust.com - anti-virus protection and personal firewalls for home and small office PC
- PI Engineering - Y-mouse devices that allow multiple peripherals to operate from a single port; monitor splitters, keyboard splitter, mouse splitters, PS/2 to USB adapters for barcode reader/scanners and other PS/2 devices, custom keyboards, programmed IC chip sets, component boards
- Puget Custom Computers - custom computers, gaming PCs, laptop computers
- vmware - virtual machine software for the desktop that runs on Windows and Linux host OSes
- XBOX-MODCHIPS.COM - Canadian source of XBOX mod chips and related products
- Card Labs - Card Labs manufactures laundry smart card payment systems
- Smart Card Integrators, Inc. - Los Angeles based Smart Card technology developer and manufacturer, an OS based on the Windows for Smart Card OS that has been updated
- ATEME SA - and video compression on DSP
- Biene Electronics - professional design of digital and analog electronics, microcontroller, microprocessor and PC based systems, develops electronic test equipment, embedded system controlled products, telecommunications accessories, and industrial manufacturing and testing systems
- Business Telephone Systems & Phones - provides business telephone systems, phone system, and IP Internet telephony decision support consulting
- Compass Technologies International LC (CTI) - a global consulting and brokering group, consulting services specialize in helping small and medium business start-up or expand international operations, CTI professionals also broker semiconductor, circuit board, and process control equipment
- DSP Tools - Software and Hardware Design Services, DSP Hardware Solutions, Windows software
- IEEE Dallas Section Consultants Network - The IEEE Dallas Section Consultants Network represents members who practice their profession on a consulting basis. This website is dsigned to assist companies in locating qualified technical expertise. The consultants listed at this site are in business as independent consultants. This website is a free service to clients and consultants.
- The Lindquist Systems Group DSP and filter design services - including consulting, R & D, and workshops
- Ovitz Taylor Gates - Management resources for enterprise projects, offering how-to workbooks, project plans and planning guides, tools, templates and checklists.
- The Lindquist Systems Group - DSP and filter design, information technology, intellectual property and other legal services, and books and resource materials
- www.Inventgineering.com - Electronics design consultant with links to both on site reference pages for telecom wiring, signals, and circuits as well as other general data and circuits. Many links to component manufacturers and other reference pages.
- Waltzing Bear Audio - Transmitter site construction, studio design and construction, Audio Engineering Services, Recording (location and studio) and Production
- Atlantic Scientific - Surge Protection Solutions
- Electric Specialists - design and manufacture interference control and surge suppression systems for networks, modems, telecommunications, surveillance, automation, instrumention, process control, video, audio and power
- NOAHTEC.Com - infomations on monitor repairing and also spare part
- ServiceManuals.net (The Treasure Chest Corp.) - service manuals, owner's manuals, remotes
- A M Bromley Limited - design and manufacturer custom electronics for domestic heating, industrial control, patient handling and automotive applications
- Array Electronics Co.,Ltd. - designing and manufacturing industrial products such as programmable logic controllers, remote controllers, tele-communicating products, and measure instruments
- Biene Electronics - remote control, control modules, microcontroller module, cable tester, logic analyzer
- Carlo Gavazzi Automation Components - sensors, switching gear, control gear, control modules, monitoring modules, safety accessodies, Fieldbus, Installationbus
- Erlich Industrial Development Corporation Interface Boards - extended line of electronic boards for industrial interfacing
- JK Microsystems, Inc. - provides low-cost, embedded single board computer and industrial control solutions that easily integrate DOS, Ethernet, TCP/IP, serial port and I/O features
- Morphoport - CAN Bus Card, Digital Resistor, Current Sink, Real Time Interface, Relay Inteface
- Pilz International - control and monitoring technology, control and signaling, sensors, safe control technology, operating and monitoring technology
- PLC Automation Training - 'PLC Automation Trainer' software, for electrical, electronics, instrumentation, mechanical and chemical engineers / technicians
- PRAF Microcomputer Technologies Ltd. - focused on development, manufacturing and marketing of the computerized automation and control systems, enterprise and home telephony accessory equipment as well as on providing the computer networks and voice communication systems integration and supporting services, located in Israel
- Starlabs - Electronic Industry Automation Solution Provider, Manufacture of PCB Assembly Equipments
- Gigahertz-Optik Inc. - light measurement instrumentation including UV-Vis-NIR radiometers, photometers, color meters, laser / optical power meters, integrating spheres, R/T instruments & optically diffuse materials
- Conversion Factors Incorporated - conversion programs and services available for almost all CAD formats
- Davidson Machinery - resource for lithographic printing machinery
- Eclypse International Corporation - Eclypse International manufactures and provides services to verify integrity of electrical systems onboard ships, aircraft, vehicles and other types of high density electrical wiring systems. Systems and methods proven and built for both factory and severe environments.
- electronics.ca publications - publishes market research reports to the Semiconductor and Electronics Manufacturing Industries
- Exergia New Energy Shop - Sophisticated demonstration models, using alternative energy technologies for universities, schools and interested individuals like Stirling and Steam engines, fuel cells, photovoltaic objects, toys and more!
- jetSavings - Inkjet cartridge retailer providing cheap ink jet printer ink supplies and compatible discount color inkjet cartridge supplies.
- Lanyu Model - hobby model parts: wooden propeller , plane and boat, fiberglass products, Aircrew, wheels of model plane, polyester self adhesive trim, spinner, metal or non-metal part sets
- Lineup21 - marketplace for used machinery and plant
- Recky-Eastern Exhibition & Displays Co., Ltd. - a manufacturer of portable trade show & display system in China mainland, exported to many countries
- Remote Security Co Uk - Various programs covering audio video and remote solutions such as MDS motion detection system with comport activation via PIR sensors etc as well as standard video movement detection.
- Shangyuchem - Produces peroxides and other specialty chemicals including sodium percarbonate, sodium perborate, TAED, calcium peroxide, magnesium peroxide, potassium monopersulfate.
- Shenzhen Xinbei Import & Export Trading Co.,Ltd. (sinfoil.com) - professional manufacturer and exporter of Copper Foil in China, produce 9,10,18,25,70,105 micron electrolytic copper foil for PCB, CCL, EMI ,Lithium Battery, and Polymer Lithium Battery
- Signal Measurement corporation, (SMC) - design and manufacture mounting hardware for cellular and communications type equipment, mounting hardware accommodates cell phones, CCTV and video cameras, PDA.s, laptops, Flat Panel PC Monitor mounts, antennas, CB, satellite radios and GPS systems, virtually anything electronic
- Steward & Sons - a technical book publisher, distributor, and seller
- University of Oxford Electronics & Telecoms Programme - The University of Oxford offers electronics and telecoms short courses for professionals in the European electronics and telecoms industries.
Lighting companies
- American Neon Products - Neon Signs
- Del Lighting - designs and sells fiber optic lighting systems for commercial lighting, accent lighting, starfields, landscape or pool lighting
- Entertainment Technology - manufacturer of IGBT based dimming and lighting control products
- Leviton NSI Division - lighting instumenrs, controllers, dimmerd, was earlier known as NSI Colortran
- Lite-Puter - architectural and stage lighting control systems, light dimmers and conrol panels
- Shanghai Hongyuan Lighting & Electric Equipment Co.Ltd - many kinds of lighting and electric equipments including road lighting, street decorative lighting, garden lighting, flood lighting, spot lighting, proof lighting, fluorescent lighting, down lighting, high bay series, ballast, capacitor, ignitor and electric equipments applied in various lighting projects
- Simon Morris Associates - A professional team that uses light as the basic element in the expression of the architectural space.
- Twins - a developer and producer of electronic modules for lighting equipment
- Bulbco.com - light bulbs from ge, philips, osram, sylvania, hid lamps, fluorescent lights, halogen light bulbs, ballasts, transformers, lighting fixtures online
- The Sound & Light Company - sales, hire, design, installation and maintenance of sound and lighting systems
- Xenon Tesla Optic (www.hosin.de) - XSW searchlight, ignition units, power supply units for xenon lamps, tesla transformers, reflector, infrared filter, repair and sevicing, special designs
- Horizon Lighting Control Console Software for Windows 95 - Downloading Horizon software for evaluation or to upgrade an existing Horizon control system is free.
- Sweetlight Lighting Controller - PC based lighting controller for discolight controlling for Windows
- Look Solutions - German supplier of a complete range of fog generators and hazer. From the tiniest fog generator in the world (TINY FOGGER) to the most powerful fog generator in the world (ORKA 9000 Watt).
- Arcstream - lighting, lasers, audio visual, submersible waterscreen system, offer services in the corporate community including complete design and supply of audio visual packages ranging from small scale presentation to large blue chip organization events
- B.T. Productions: Terror by Design - source for haunting and Halloween supplies / props / services
- Enchanting Forest - theare and TV props, themed artefacts, lighting/smoke/sound effects, built to order in Nottinghamshire UK
- Ideafix
Component information
- 4000 series CMOS logic IC pinouts
- 7400 series TTL logic IC pinouts
- Understanding Buffered and Unbuffered CD4xxxB Series Device Characteristics - Many CMOS suppliers have concentrated on promoting buffered B-series products, with applications literature focusing on the attributes and use of the buffered types. This practice has left an imbalance in the understanding and application of both buffered and unbuffered gates. In some instances, customers are not using unbuffered products when they are the best choice for the intended application. This application report offers clarification of the relative merits of the buffered and unbuffered CMOS devices.
- Basic Active Filter Circuit Blocks - filters based on operational amplifiers, capacitors and resistors
- Lazar's Power Electronics Corner - Virtual power electronics library: switching power supply circuit, magnetics and pcb design basics, topologies app notes, free software, simulators and calculators, engineering references, news, links and other info for power supply designers and users.
- Hysteresis Loop - Hysteresis Loop is a lag between cause and effect. With magnetism it is the amount that the magnetization of a material lags the magnetizing force due to molecular friction.
- Fuses: A Short Primer - Fuses are possibly the most misunderstood components in electronics, and often regarded as a "nuisance". In fact they play a very important role as a �safety valve� in many circuits, protecting both the equipment from costly damage and the user from serious injury or possible loss of life.
Basic electronics components list
Computer Hardware Page
- Timeline of Computing History - To commemorate the 50th year of modern computing and the Computer Society, this timeline traces the evolution of computing and computer technology.
- Atari Gmaing Headquarters - Atari console, arcade and computer information site
- JAMMA Connector Pinout - An old group trying to set standards for board pinouts (at arcade machines). This was designed to make board changes easy, just take out the old game and plug in the new.
- Dan B's Emulation Programming Page - information emulation of old video games
- Playandview - Buy and sell new and classic video games, includes game forum, video game system specs
- Videogames on Alternative Monitors FAQ - This FAQ is an attempt to provide answers to all those who have tried to attach their video games to either TVs or VGA monitors. It covers VGA monitors, SCART TVs, and RGB to composite video/UHF.
- ps2list.com - Online playstation 2 game, cataloging service. Create your own free inventory list.
- Sony Playstation Technical Specifications
- Dan B's Atari 2600 Tech Page - lots of information including circuit diagrams of a very classical video game console
- Dan B's Atari 5200 Super System Techn Page
- Dan B's Atari 7200 Techn Page
- The Odyssey 2 (the G7000 Videopac in Europe) Tech Page - a video game console by Philips/Magnavox
- 6502 pages - The 6502 was a very popular 8-bit microprocessor in the late 70's and 80's. The 6502 (and it's variants) where used in many game system and computers like the Apple II, Atari VCS, Atari 800, C64, NES and others. This page contains a compilation of links, programs, and information on the 6502.
Digital Electronics Page
Digital Signal Processing Page
FPGA and other programmable logic ICs
- New FPGA Program Techniques Kick 'But' - Theoretically, FPGAs combine the speed of dedicated, application-optimized hardware with the ability to flexibly change chip resource allocation, so the same system can run many applications, optimized for each one. But FPGAs have historically been so hard to program that it's been very hard and expensive to use these advantages. New tools will help this.
- Programmable Logic Devices / Programowalne uk.ady logiczne - The site is about programmable logic devices.The site has many links to sites in English and Polish about PLD.
- EDN's Third Annual Programmable-Logic Directory - EDN's PAL, PLD, and FPGA directory highlights the architectures available for your next design. Find out what's new, what's obsolete, and what's evolved in PALs, PLDs, and FPGAs.
- fpga4fun - HDL tutorials and designs to promote the use of FPGAs
Engineering fun
- A Light in the Dark - For years it has been believed that electric bulbs emitted light. However recent information from Bell Labs has proven otherwise. Electric bulbs don't emit light, they suck dark. Thus, they now call these bulbs dark-suckers.
Internet Protocol (IP) Page
- CISSP.COM - web portal for the certified information systems security professionals, intended to to promote the CISSP Certification, share knowledge and communication amongst certified information system security professionals and to help information security professionals who are seeking to become CISSPs
- The CISSP and SCCP SOpen Sudy Guides Web Site - a site dedicated to helping people in achieving their goal of becoming a CISSP or SSCP, vast container of resources that can assist you in mastering the domains of the specific Common Body of Knowledge related to each of the above certifications
- Squashing spam - Open-source statistical software eliminates unwanted e-mail.
- Innovative use of Data Networks to Improve Campus Security - report that looks at legal and social aspects of deploying a CCTV security system, and number of commercial systems for CCTV over a variety of media including data networks
IrDa page
Infrared remote control technology
Laser information page
- Laser Show Safety - If you're involved with lasers that are used for shows or displays this site will contain important information regarding laser safety. Contains lots of useful information and answers many myths about how to use lasers for light show purposes, and keep everyone safe. There are specific sections to different types of uses of laser show systems, and a growing FAQ section. For those of you concerend that you may have been looking into a laser beam for too long there's even a simple online eye test, to indicate if you have any retinal damage.
- Calpac Lasers - laser diode modules, laser pointers, laser levels, laser thermometers, laser keychains, laser pens, and laser engraving
- Hsing Yu Optical Co.,Ltd. - professional Laser Pointer & Lens manufacturer with world wide patents, Laser Fringes, Laser Timer Pen, Optical Lens,
- Laseronics Design - laser shows, effects & display
- Laser Visuals - Manufacturers of Laser Light Show Tools, with software, electronic modules, lasers, and other optical components available, whether it be for hobby or professional use. Also lots of information about laser light shows, how they work, and what safety considerations need to be taken into account. Suppliers lasers, scanners, control software, optical effects and optical accessories.
Lights and electronics
Electronics magazines
- Embedded Systems Programming - a monthly magazine for engineers, programmers, and project leaders who build microcontroller and embedded microprocessor-based systems
- Embedded Systems Europe - pan-European magazine that focussed on providing embedded systems engineers with the information they need to keep them informed in a fast moving and highly competitive market
- Radio Bygones Magazine - Vintage radio magazine for those interested in restoring old radios or in the history of radio etc.
- TRONIX - Electronics and computer Magazine in arabic Language
- Medical Electronics Manufacturing - magazine strictly devoted to medical electronics, provides industry news and product information in two issues per year
- RFID Journal - Radio Frequency Identification for Business
- Broadband Properties Magazine - magazine for professionals involved with technologies for multifamily residential (MDUs) and commercial properties (MTUs)
- CQ-TV - the quarterly magazine of the British Amateur Television Club
- e4engineering.com - engineering news, information and jobs
- DevArticles - DevArticles is full of web design and programming articles, as well as a huge community forum.
- The WebMaster Weekly Newsletter - e-mail newsletter read by one million WebMasters world wide
- EPE Online - Subscription based on-line magazine based on the printed edition of Everyday Practical Electronics magazine. A free sample issue is available.
- Radio Bygones Web-Delivered - Online version (downloadable) of Radio Bygones magazine. Vintage radio magazine for those interested in restoring old radios or in the history of radio etc. On-line version costs money to subscribe, a free sample issue is available.
- Poptronix Online - subscription based magazine for the electronics activist, free preview available
- Telecom Classifieds - This site makes no profit and is intended solely as a free resource for the global telecom industry. It only takes a couple of minutes to place a free ad.
- The Electrical Distributor Magazine (tedmag.com)
Measuring and testing
- The Museum of Tek Scopes - Welcome to the Museum of old Tektronix Scopes. These pages give information on and images of old Tek scopes up to about 1970.
- The Tektronix 453 Oscilloscope - A technical picture essay of the classic Tektronix 453 Analog Oscilloscope. Lots of pictures, descriptions of the various parts of the scope, and some troubleshooting information, too. Links to other sites dealing with the Tek 453.
- Speccie: a low cost Spectrum Analyzer - This document describes the development of a combination of cheap (till now) hardware and some very good designed software which makes it possible to view the Frequency Spectrum from about 50 MHz up till 2000 MHz. For this purpose we do use quite well available TV tuners which can easily be controlled by I2C bus.
- Charlie Thompson's Radiation Detection Web Page
- DS1615 Datalogger - This site describes the mounting of a temperature datalogger based on the chip DS1615 from Maxim/Dallas Semiconductor. Schematics, mounting instructions and step-by-step instructions included. Biligual page (English/Portuguese).
- Temperature Conversion Calculator and FAQ - How do I convert between Fahrenheit and Celsius? The equation relating the two is C = (F-32) * 5 / 9.
- Fieldmill Voltmeter Project - Construction and calibation of a prototype field mill voltmeter. Field Mill Voltmeters are a non-contacting system for measuring high voltage or more accurately electric field strength. These devices are sometimes used aboard aircraft by Meteorological agencies for measuring the electric field potential on thunder clouds. They are also used on board satellites for measuring electrical fields in space. This circuit was designed to measure the voltage from Van De Graaff generators.
- Measuring High Voltages - When we are attempting to measure voltages greater than several tens of thousands of volts we have to approach the problem rather differently to conventional electrical means. The conventional solution would be to use a high impedance potential divider to avoid loading our circuit and to tap off a portion of the measured voltage to display on a digital meter. Well this won't work on very high voltages. Field Mill Voltmeters are a non-contacting system for measuring high voltage or more accurately electric field strength.
Memory technology information page
Microprocessor and microcontroller pages
- Electrical/Electronics Project Designer's Page - Electrical and Electronical Applications prepared by using Assembler Programming Language. Motor Control,Serial Communications,Temperature Control,Basic Assembler Applications,I/O Ports Design,Timer and ADC.
- About the PIC
- Electr�nica Digital & Microcontroladores - Page (in spanish language) dedicated to theory and practice in digital electronic and PIC microcontrollers.
- IDE Interface - This simple note shows you how to control a standard hard disk using a micro controller or through a PC parallel port. Most frequently used IDE commands are shown with examples and circuits.
- The Propeller Clock - A novelty clock using a spinning row of flashing LEDs to show the time
- PP06 PIC Programmer Software - PP06 is an open-source Production programmer for Microchip's PIC micros. Specifically designed for use in factory in-circuit programming, and development of master/slave systems it supports many pics,and is easily extended to different hardware. This softare programs most 12&14 bit PIC's, flash and eprom (78 types). Software supports various hardware (all David Taits original hardware types + others). Software is available for Windows, Linux (command line and KDE), and DOS.
- 8051 Derivative Microcontrollers
- 80186 timer pins provide general I/O
- AMD
- 6502 pages - The 6502 was a very popular 8-bit microprocessor in the late 70's and 80's. The 6502 (and it's variants) where used in many game system and computers like the Apple II, Atari VCS, Atari 800, C64, NES and others. This page contains a compilation of links, programs, and information on the 6502.
- Cross Development mini-howto for PPC Linux - These instructions are intended for developers who wish to build kernels and/or application on an x86 Linux platform targeted for a PPC Linux platform. Often this is desirable if one has a faster x86 host system or the target environment is not practical to host a development environment.
- G5 Revealed: Introduction to the PowerPC 970
- Introduction to assembly on the PowerPC - Assembly language is not widely known among the programming community these days, and PowerPC assembly is even more exotic.
- Rabbit Developer Resources - This page is provided as a service to the Rabbit developer community.
- Rabbit Semiconductor - The Rabbit company web site
Miscallous Electronics Links
Motor controlling
- Motor controller uses fleapower - A simple, permanent-magnet dc motor is an essential element in a variety of products, such as toys, servo mechanisms, valve actuators, robots, and automotive electronics. In many of these applications, the motor must rotate in a given direction until the mechanism reaches the end of travel, at which point the motor must automatically stop. This circuit implements a low-cost, micropower, latching motor controller that uses current sensing rather than switches to stop the motor. The design is optimized for a supply voltage of 3 to 9V, making it well-suited to battery-powered applications.
- motiontoolbox.com - engineering focused website ith a searchable growing database of servomotors, drives and, motion controllers and precision gearheads, site has also article archive
- How-to: Forward / Reverse Micro ESC
- Replacement Servo Driver Circuit - How many times have you looked at that dead servo on the corner of your bench and wished that you did not have to buy another? Here are plans to rebuild the RC servo electronics (replica of the GWS board).
- Variable Speed Control Modification to the Futaba S3003 RC Servo
Music Electronics Page
- MAnMIDI - Multiple Analog to MIDI - MAnMIDI is a chip for converting multiple voltage sources into midi controller output, for connection to synthesisers or computers with midi inputs. Low power consumption, 6 mA @ 3-6 V, and low component count allow you to build very compact and portable applications with ease. Readymade MAnMIDI chips in 18 pin DIP packaging are available at $30 each.
Usenet newsgroups talking about electronics
PC hardware projects page
- CD-ROM audio connectors - This document describes the audio connector pinouts in the CD-ROM drives and circuit to combine audio from two CD-ROM drives to one soundcard input.
Battery Power Supply Page
- Car and Deep Cycle lead-acid batteries - Car and Deep Cycle lead-acid battery answers to Frequently Asked Questions (FAQs), tips, information, references and hyperlinks are contained on this consumer oriented Web site about car, motorcycle, truck, marine, recreational vehicle starting and deep cycle applications.
- The Great Battery Shootout! - which batteries are best, many NiMH batteries tested
Computer Power Supply Page
DC to AC inverter and UPS Page
- Uninterruptable Power Supply with DSP - An uninterruptable power supply (UPS) system provides backup power supply for an application in the event of an electrical outage. Combining a microcontroller unit (MCU) and digital signal processor (DSP) in a single chip allows creation of a digital UPS offering higher performance at lower cost.
High Voltage Power Supply Page
Linear Power Supply Page
- Increasing Regulator Current - Although the 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A power transistor is used to supply extra current to the load the regulator, maintaining a constant voltage.
- 13.8V 20A power supply - Regulated DC power supply, short circuit safe, and with current limiter. This PSU has been especially designed for current-hungry ham radio transceivers. It delivers safely around 20Amps at 13.8V. For lower currents, a separate current limiting output, capable of 15ma up to a total of 20A has been added. The base of this design is a simple 12V regulator (7812) and power transistors.
Misc power supply circuits
- RFB-01 - The ultra fast rectifier bridge - Some people feel that they need a faster rectifier bridge than the normal 1-50 �s in 50/60 Hz applications. The rectifier bridge is built by four ultra fast recovery diodes plus four heavy duty polypropulene capacitors.
Switched Mode Power Supply Page
- Lazar's Power Electronics Corner - Virtual power electronics library: switching power supply circuit, magnetics and pcb design basics, topologies app notes, free software, simulators and calculators, engineering references, news, links and other info for power supply designers and users.
- High-voltage circuits for electrostatic microphones - circuits that can generate the required high-voltage for electrostatic microphones used in bat detectors, circuit can be used to generate a voltage of about 70V using a current of about 4 mA at 6V input voltage
- Build a 13.8V, 40A Switching Power Supply - This site details a homebrew 40A/13.8V Mains 220/110V AC Switching Supply Designed for Ham Radio Applications originally. Published design in several magazines, details homemade magnetics used in the supply. This compact and lightweight workhorse can power your whole HAM radio station!
Pyrotechnic effects
Radio Electronics Pages
Electronics repair page
Robotics information page
Electronics safety pages
- ESD Control for Electronics Manufacturing - this application note presents recommendations for establishing basic ESD control equipment and practices in a small to mid-sized manufacturing facility which handles sensitive electronics components and printed circuit boards containing them
Search engines, electronics databases and link resources
Electronics service manual link page
- Schaltungsdienst Lange Berlin Germany - service manuals for very many brands for consumer electronics, has bankaccounts outside Germany for ordering
- TeleManuals.com - library of telecom equipment Technical Manuals and Users Guides available for Instant Download, once payment is successfully processed, a link to the manual will be immediately emailed to you
- master-tv.com/fo/ - Free Shematic diagramm, Service manual, Memory dump for TV, Video, Monitors, and more.
- Sony Blinking Codes - Many of the later model Sony TV's have a built in Self-Diagnosis function. If the timer/standby indicator is blinking, this could be an indication of the problem with the unit. The diagnostic blinking will occur automatically with no action required by you to engage it.
- Electronics repair - Schematics diagrams, service manuals, reference material, both free information and information for money
- TSinding Electronic - over 250 free diagrams for home elctronics, like TV, radio, video, monitors, etc...
- Professional Audio Equipment Schematics - Altec Schematics, API Schematics, CBS Schematics, Gates Schematics, Orban Schematics, RCA Schematics, Sennheiser Schematics, Urei Schematics, UTC Data, Valley Schematics
- Computer Monitor Schematics abd Service Manuals - Acer, Samsung, Panasonic, Sony, Philips, Daevoo, ViewSonic, LG, Liteon, CTX, Bridge, Mag, Siemens, Sampo, IBM, Huyndai
- Servisna dokumentacija - monitor service manuals download: Hitachi, Samsung, Daevoo, Funai, Nokia, Panasonic
Electronics software
- Electronic.host.sh Download - electronics design software and related documents
- SCH y PCB - Tango pcb and Tango Schematics for DOS
- Universal Teacher - This web site is primarily dedicated to educational softwares. The eBooks, tutorials, and softwares offered on this site are selective, educative, and entertaining.
- ImageMagick - ImageMagickTM 5.5.7 is a robust collection of tools and libraries offered under a usage license to read, write, and manipulate an image in many image formats (over 89 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF. With ImageMagick you can create images dynamically, making it suitable for Web applications. You can also resize, rotate, sharpen, color reduce, or add special effects to an image or image sequence and save your completed work in the same or differing image format. Image processing operations are available from the command line, or from the C, C++, Perl, Java, PHP, Python, or Ruby programming languages. A high-quality 2D renderer is included, which provides a subset of SVG capabilities. ImageMagick's focus is on performance, minimizing bugs, and providing stable APIs and ABIs.
- EZRoute2000 for Windows95/98/2000/ME/NT/XP - Printed circuit layout software for beginners and experienced users. Easy to use printed circuit layout software.
- LochMaster - LochMaster is a developers tool for strip board (VERO) projects for designing, documenting and testing a board. This is a commercial program. A free demo version is available.
- TARGET 3001 - PCB Layout CAD Software that contains schematic, simulation, pcb-layout, autoplacer, autorouter, emc analysis, a full working discover version for free!
- CircuitCREATOR. CAE system - Electronics CAE Schematic and Printed Circuit Board Design System for Win9X ,NT 2000, ME and XP System, free downloadable demo available
- atlc - Arbitrary Transmission Line Calculator (for electrical transmission lines) - atlc is a computer aided design (CAD) package for the design and analysis of electrical transmission lines and directional couplers of totally arbitrary cross section. 'atlc' can handle any cross section and any number of different dielectrics. It's also possible to analyse 3 conductor lines (directional couplers). The software is free, open-source and for Unix or GNU/Linux machines. It is not really interended for Windoze machines.
- eCircuit Center - A free source of SPICE circuit files and tutorials for the hands-on learning of electronic circuits. Circuits you can design, test and modify using the SPICE simulator: Opamps, filters, sensors, PID controllers, etc.
- LTspice/SwitcherCAD III - LTC SwitcherCAD. III is a fully functional Spice III simulator with enhancements and models for easing the simulation of switching regulators. This Spice is a high performance circuit simulator, integrated waveform viewer, which also includes schematic capture. Small, easy to learn, GUI version of Spice. Works perfectly on Wine emulator under Linux as well!
- SpiceCreator - a popular 32-bit analog, digital, mixed signal circuit design and simulation program, free demo version available
- MiscEl - program to handle many different simple electronic calculations. This includes: ohms law, dB, charge curves, Wires, Fan cooling, PCB, color codes, thermo sensors, leds circuit, Fo, Serial/Paralle of R/C/L, and some more. The program is free to download and use, but the program is timelocked. A new version will have to be downloaded after about 1/2 year.
Data communication circuits page
Data Communication Electronics Page
Local area networks page
- Metro Ethernet and ELECtrification - Ethernet moves beyond the enterprise LAN and into the metropolitan area network.
- 10BASE-T FPGA interface - The Ethernet full-duplex protocol is easy to implement in an FPGA. The goal here is to interface an FPGA to a 10BASE-T full-duplex connection.
Mobile communications page
- Remote Control Module BieneRemote01 (OEM) - Home Automation control via SMS message. You can receive text messages with the occurrence of an event automatically to GSM mobile (cell) phones. You can transmit command messages and switches the output - switch on/off remote equipment. This is introduction to one product for this and reading this article is also a good introduction what can be done in this field with this or other similar products.
- WAP Wireless Markup Language Specification (WML)
Telephone technology page
Video broadcasting technology page
Closed Circuit TV Technology Page
Video chips and circuits
- Averlogic - makes computer-TV ics for example for, VGA - composite video, composite - VGA, VGA to RGB, 2 VGA to 1 VGA, OSD, 4 composite video in to 1
Video circuits
- Video Effects Unit - Digital AV mixers are available commercially, however these normally cost as much as a good video recorder, which is rather expensive for home use. The Video Effects Unit presented here has a more modest specification, with a more modest price tag! The unit enables the picture to be wiped to black at the end of a track, and then restored at the beginning of the next track. The recording video recorder would be paused once the picture is black, and the pause released just before fading in the next section. This circuit was originally published in Electronics in Action, December 1993
Digital Video Page
- IEEE 1394 drives expand video-storage options - Consumer-electronics manufacturers are considering IEEE 1394 disk drives to solve the cost, upgrade, and reliability problems with today's embedded approach to digital-media storage.
DVD Technology Page
Video production technology page
- Intro to Timecode & Practices for Recording Source Tapes - One of the wonderful things about professional video equipment is that every field of every frame on a videotape has a unique address. The consequences of every frame being permanently labeled are enormous. It makes it possible to eject a tape from it's player and reload it later, and still be able to find exactly the same frame as before.
Video Signal Standards and Conversion Page
Video Signal Storage
- RCA SelectaVision VideoDisc FAQ - This is a list of frequently asked questions regarding the RCA SelectaVision VideoDisc System, a delivery platform for home video marketed by RCA from March 1981 through June 1986. In the mid 1990's, this defunct electronic technology from the 70's and 80's became collectible.
Video equipment performance tests and tuning
Audio/Video Wiring Page
- Video Cabling Standards - A question that frequently arises amongst DVD-watchers is what effect does connecting the DVD player to the TV by different cabling systems have on the picture. This article describes different video signal transmission formats and their effect to picture quality.
- RF-links.com - wireless audio/video links, schematics and product shop
Electrical Wiring Page
- Three-Phase Voltage Introduction
- Overview of 2002 NEC� Code Changes Related to Electrical Wiring Devices - Today's NEC� and OSHA regulations have more GFCI requirements. The 2002 NEC 527.6(A) now mandates GFCI protection for many portable electrical tools for example. And, as you might expect, OSHA is enforcing the requirement vigorously. There are also many other places where GFCI protection is mandated nowadays for example in kitchens, bathrooms and in basements. Grounding a receptacle by means of metal-to-metal contact is no longer allowed in a flush mounted box.
- GeneratorJoe AC Power Generators Index - Links to very many AC generator related companies
- ACS Electronics Repair - Alternate Energy and Life style site with many projects to build and try.
- Build a generator from a lawn-edger motor - This generator was built using a 3 horse power Briggs and Stratton horizontal shaft motor, a GM 65 amp automotive alternator (with built in voltage regulator), a used car battery, a pulley and V-belt, a 12 volt cigarette lighter outlet box with fuse, a DC to AC power converter, a low voltage control switch, a scrap of 3/4" plywood, a few scraps of 2 x 4 lumber, 4 wheels, and two battery cables. The basic generator (gas powered motor, alternator and battery only) can be used as a 12 volt power source.
- The New York Subway: Its Construction and Equipment - This book was first published in 1904 by the Interborough Rapid Transit Company, as a commemorative celebrating the opening of the subway.
Telecommunication and Data Communication Wiring Page
Page for information about making WWW pages
- sfnet.viestinta.www vastauksia usein esitettyihin kysymyksiin - WWW topics FAQ in Finnish
- RFC 2396 Uniform Resource Identifiers (URI) Generic Syntax
- Why attribute values should always be quoted in HTML - several reasons why an HTML author should always put attribute values into quotes in HTML
- A tutorial on character code issues - concepts of character repertoire, character code, and character encoding especially in the Internet context
- ISO-Latin-1-merkist�st�
- ISO-Latin-1:n merkeist� ja niiden nimist�
- Mikrojen merkist�jen aiheuttamista ongelmista Webiss�
- Augmentative authoring - a different look at "graceful degradation" in Web authoring
- Miksi kehykset sopivat Webiin huonosti - why frames are not good for Web, text in Finnish
- Customized 404 messages, especially on Apache
- Word division in IE and other notes on the nobr markup and on suggesting possible "word" breaks - Internet Explorer divides strings into two lines in a problematic way
- What's wrong with the FONT element? - how documents can become invisible, illegible, or inaccessible to many viewers (info how FONT works can be found from http://www.cs.tut.fi/~jkorpela/HTML3.2/5.24.html)
- DevArticles - DevArticles is a website that provides both beginning and intermediate web developers with the knowledge, tools and skills they need to get the job done. It publishes articles and tutorials.
- Checking your HTML - links to some good HTML checking services
- Lehtori - Finnish HTML checker
- FORM - fill-out form - general information on forms
- Vuorovaikutusta: lomakkeet (forms) - information in Finnish
- Using inline frames (iframe elements) to embed documents into HTML documents
- DevScripts - DevScripts is a script resource site that programmers can use to find free scripts for ASP, PHP, C++, JavaScript, etc.
- JavaScript Clock
- Javascript Digital Clock - This is a JavaScript-based digital clock. Combining the advanced features of Javascript with good visual assets, you can create some very sophisticated animation without the need for Java. This Javascript example illustrates three features of Javascript. It illustrates the use of timeouts, callbacks, and image manipulation on a Web page.
- Getting Started With Perl - script language you should consider when automatically building web pages
- Perl Program to Generate and Process Form
- Palvelinskriptit (server-side scripting) - information in Finnish
- Using a C preprocessor as an HTML authoring tool
- Grafiikkaformaatit ja niiden k�sittely - meta FAQ on graphics formats in Finnish
- Tekij�noikeus: vastauksia usein esitettyihin kysymyksiin - text in Finnish
- Tekij�noikeuslaki - text in Finnish
- FTP URLs - What are FTP URLs and what are they used for?
- Hyvin lyhyt johdatus SGML:��n - short description of SGML in Finnish
BSD UNIX link page
PC Bus
General PC hardware information
PC Interfaces and Controlling Devices
Linux links page
- Linux in Hollywood - It seems ironic that Linux dominates at studios known for building secret proprietary technology to gain competitive advantage. What's happened is Hollywood has recognized that having a standard open platform to develop upon enables them to dedicate more of their resources to creating their secret sauce, the technology that sets them apart as a studio. Linux dominates motion pictures more than anyone but studio insiders may realize.
- The UNIX Reference Desk - UNIX operating system documents
- Gentoo Linux - a special flavor of Linux that can be automatically optimized and customized for just about any application or need
- Tuner Cards - Learning By Looking - Hopefully, this article will help people who'd like to consider writing device drivers for tuner cards, and others who're generally interested in how TV Tuner cards work.
- Consumer devices look to embedded Linux - Bill Weinberg and Scott Hedrick of MontaVista Software explain the development of embedded Linux and the evolution of support for new chips makes it attractive to consumer electronic designs.
PC operating systems links page
Printer information and utilities
PC programming information page
- Softocean - Computer problems are solved with Qbasic,Foltran,Pascal,C,C++. Turbo Pascal, Borland Pascal(OOP),QBasic,C and C++ course notes. Taylor series, matrix, trigomeric equatio are solved with five computer language.
- Rexx Implementations - Here's a list of platforms (hardware, operating systems, and operating environments) on which you can use Rexx.
- Color Postscript tutorial - Color PostScript is trivial. For black & white pictures, you specify shades of gray with the command "setgray". "0 setgray" is black and "1 setgray" is white. For color PostScript, you can specify the color with the command "setrgbcolor". You give that command 3 numbers, the red, green, and blue levels.
- A Tutorial on creating DLLs with VC++ - Visual basic is very fast and easy tool for developing applications with high degree of user friendliness , but it lacks some important functionalities like direct access to hardware, multythreading(Activex servers allows some type of multythreading !). The easy and effective solution for this problem is to write a DLL. But beginners experiance problems in understanding how to write a dll. .Here is a simple tutorial on writing DLLs with Visual C++. I assume that you know a little bit Visual Basic and C programming.
- C++ Reference
- printf - manual page
- C# Version 2.0 Specification - Microsoft released the design specifications document for C# 2.0 (codenamed 'Whidbey') to be released early 2004. New features of the language include generics similar to those found in Eiffel and Ada, anonymous methods similar to lambda functions in Lisp, iterators, and partial types.
- A Tutorial on creating DLLs with VC++ - Visual basic is very fast and easy tool for developing applications with high degree of user friendliness , but it lacks some important functionalities like direct access to hardware, multythreading(Activex servers allows some type of multythreading !). The easy and effective solution for this problem is to write a DLL. But beginners experiance problems in understanding how to write a dll. .Here is a simple tutorial on writing DLLs with Visual C++. I assume that you know a little bit Visual Basic and C programming.
PC soundcard page
- Oscilloscope for Windows - Oscilloscope for Windows is a Windows application that converts your PC into a powerful dual-trace oscilloscope. Oscilloscope uses your PC's sound card as an Analog-to-Digital Converter (ADC) to digitize any input waveform (speech, music, electric signal, etc.) and then presents it on the monitor in real time, allowing the user to control the display in the same way as on a conventional "standalone" scope, for example change gain, timebase or plot Lissajous patterns. Any soundcard can be used and data can be exported to Windows clipboard if needed. Software supports up to 20 kHz bandwidth, triggering and spectrum analyzer.
Mass storage
- CD-ROM audio connectors - This document describes the audio connector pinouts in the CD-ROM drives and circuit to combine audio from two CD-ROM drives to one soundcard input.
PC video hardware page
Windows links page
- DriverFiles.ner - free driver resource site
- Digital Photo Album Software - AlbumDIY is is a tool to create book-like albums that can be viewed on the local computer or distributed as .EXE file. The album looks like a book, with background music ,text comments, clipart and more. This is free software.
Completely new pages in site
Computer aided design (CAD) software
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