Mr. Hasselhoff
09-24-2007, 10:38 PM
2304 Tech List (http://6mt.com/2304tech.htm) - Many radio atenna building project documents on-line. Pages have also many radio equipment plans on-line.
4QD Electronics Circuits Reference Archive (http://www.4qdtec.com/) - 4QD's pages of interesting circuits with wide selection of small circuits useful as building blocks for electronic systems
Aaron's Electronic Circuits (http://www.aaroncake.net/circuits/index.asp) - light, laser, sound, radio, PSU, car
Alfred73 Electronics (http://digilander.iol.it/alfred73/elettronicae.htm) - SMT Desoldering Station, Infrared Receiver, line in use, VGA to TV, power supply
Amateurfunk- und Elektronik-Projekte (http://userpage.fu-berlin.de/%7Edl7awl/afuproj.htm) - amateur radio electronics project in German
Amazon Electronics Free Circuits (http://electronics123.com/amazon/datasheet/default.htm) - audio, computers, controllers, testers, light effects, microcontrollers, power supplies, radio, security, timers, circuit can be also bought as complete kits from Amazon Electronics (http://electronics123.com/)
Ampage (http://www.firebottle.com/ampage/) - guitar effects and music electronics
Analog Circuits Webpage (http://www.omninet.co.jp/workshop/analog/analog.htm) - audio, video and more appliacations
Analog Music Zone Guitar Effects Schematics (http://www.muzique.com/schem/index.html) - guitar effects, compressors, microphones and effects
Andrew Buckin Projects (http://www.geocities.com/ipm_grp/) - VGA generator, SVGA generator, IDE2LPT, CPLD projects
Antenna Scope, Attenuators,RF Probe, MORE! (http://www.qsl.net/we6w/text/projects.html)
Applications of neon glow lamps (http://www.eurisco.com/jack/neon/neon-e.shtml) - some applications of neon glow lamps
Aquarium Related Electronics (http://www.cyberreefguru.com/fish/electronic/index.html) - pH meters, thermometers
Aren's Attic: How to build your own audio equipment (http://members.tripod.lycos.nl/Aren/index.htm) - loudspeakers, solid-state amplifiers and tube amplifiers
Audio Designs Guide (http://www.geocities.com/ResearchTriangle/8231/#INDICE)
Audio Electronics Page (http://www.infomaniak.ch/%7Ebonavolt/audioel.htm) - amplifiers, preamplifiers, power supplies
Batronix.com (http://www.batronix.com/) - electronic circuits, information, software and datasheets to download for electronics hobbyists, programmers for EPROMs and microcontrollers
Bebec Electronic kytkinkaavat (http://www.bebek.fi/kytkinkaavat.html) - dozen different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures
Bebek Electronic rakennussarjat (http://www.bebek.fi/kytkis.html) - five different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures
Beyond Logic (http://www.beyondlogic.org/) - PC interfacing projects
Bob Blick's Assorted Electronics Projects (http://www.bobblick.com/bob/projects/index.html)
Bowden's Hobby Circuits (http://ourworld.compuserve.com/homepages/Bill_Bowden/) - collection of electronic circuits for the hobbyist or student
Brainstorming page (http://home.t-online.de/home/Holger.Heinemann/) - electronics hobby circuits, page is in German but you can try to access it using automatic English translation (http://babelfish.altavista.com/translate.dyn?url=http://home.t-online.de/home/Holger.Heinemann/&lp=de_en)
Burning Flux (http://www.andrewkilpatrick.org/burning_flux.html) - musical instruments and audio/video projects
Circuit Central (http://www.eed.usv.ro/misc/mirrors/cc/circuits.htm) - This library currently contains 285 circuits in 15 categories.
Circuit Exchange International (http://www.mitedu.freeserve.co.uk/) - schematics on radio and electronics, circuit analysis, circuit theory and electronic design
Circuits from Forrest Cook (http://www.solorb.com/gfc/elect/) - NiCD charger, radio, audio, microprocessor
Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - many quite simple circuits
Circuit Lab (http://www.electronicsforu.com/main/circuit/index.asp) - lots of different circuits from Electronics for You magazine (http://www.electronicsforu.com/)
Circuits Online (http://www.circuitsonline.f2s.com/circuits/) - Dutch electronics site with circuits, forum, datasheets, links, downloads, articles, info, newsletter, etc.
Classic and Vintage Audio Circuits Page (http://w3.one.net/%7Erobgrow/circuits/circuits2.html) - some audio equipment circuits and links
CommLinx Solutions circuit links (http://commlinx.com.au/schematics.htm) - Links to hundreds of circuit schematics available on the Web formatted onto a single convenient page
Computer Hardware Projects (http://www.geocities.com/tangmonster911/computerhard.htm) - computer oscilloscope and car MP3 project
Cool Schematics (http://www.mif.pg.gda.pl/homepages/tom/schematics.htm) - solid state and tube guitar amplifier circuits
Crystal Radio Projects (http://www.datasync.com/%7Eignatz/electro.htm) - AM receivers, FM receiver, tesla
CyberCircuit Circuit Archive (http://www.uslink.net/%7Ecybercir/archive.htm) - many different circuit ideas
CXI Schematics (http://www.mitedu.freeserve.co.uk/Circuits/cctindex.html) - alarm, security, control, interfacing, music effects, radio, power supplies, switching, test gear
Dan Fraser's Electronic Info & Schematic Page (http://www.nav.to/techman10) - audio circuits, monitor repair
DesignNotes.com Free Circuits Archives (http://www.designnotes.com/Circuits.htm)
Diana's Electronics Info Page (http://members.tripod.com/%7Eschematics/electro.htm) - simple amplifiers, solid state oscilloscope, stepper motor projects, led circuits
DIBs Circats (http://www.psyber.com/%7Edibsed/dcircats.html) - Schematics of simple circuits in GIF and PDF format: audio circuits, power supply, logic and microprocessor
Die Xedox Elektronikseiten (http://xedox.de/projekt.html) - some electronics project, text in German
Digital Circuits Webpage (http://www.omninet.co.jp/workshop/digital/digital.htm) - gate applications, flip-flop, counter, computer I/O, display, RS-232
Discover Circuits (http://www.discovercircuits.com/list.htm) - a collection of schematics quick solutions for electronic engineering problems compiled by David A. Johnson
DIY Audio Amplifier Page (http://www.vision.net.au/%7Eanthony/) - audio power amplifiers
DMZ Schematics (http://members.aol.com/jorman/schem.html)
Dr Bob's Electronic Projects (http://www.drbob.net/project/eproj.html) - amplifier circuits, chargers, flashers, meters, motor, oscillator and power supply
EDN Archives (http://www.ednmag.com/ednmag/archive.asp) - contains past issues of EDN magazies which contain design ideas and other circuits
EDN's Design Ideas Archives (http://www.ednmag.com/ednmag/SearchDID.asp) - circuit archive which you can access with search engine
Effect Rack Unit (http://hem.fyristorg.com/effects/rack_k.htm) - contains very many guitar effect unit circuit diagrams
Effectronics Schematics (http://www.geocities.com/CollegePark/Library/1355/schematics.htm) - audio processing and effect circuits
ELEC.de (http://www.elec.de/) - large circuit page, text in German, you can use automatic translation to English (http://babelfish.altavista.com/translate.dyn?url=http://www.elec.de/&lp=de_en)
Electronic Gaggets for Radio Control (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm) - tutorials, circuits and datasheets
Electronics 2000 (http://www.citycom.gr/electronics/downcircuits/morecir_1.htm) - tens of different circuits to download
Electronics 2000 (http://users.auth.gr/%7Emixos/projects/board.htm) - many different electronics circuits on two alternative laguages
Electronics and schematics (http://www.tuug.fi/%7Eisaarine/electronics/) - some PC parallel port and RC servo circuits
Electronics Infoline (http://www.electronicsinfoline.com/) - electronics circuits portal
Elecronics Projects for R/C (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm)
Electric Model Aircraft Circuit Diagrams (http://www.vision.net.au/%7Etimotsc/elecmod2.htm)
Electronic Circuit Beans Collection (http://www.interq.or.jp/japan/se-inoue/e_ckt.htm) - small circuit useful as building blocks, oscillators, power supplies
Electronic-Circuits for Model-Aircrafts (http://jaichi.virtualave.net/) - contains also some microcontroller projects
Electronic Cookbook Archive (http://www.ee.ualberta.ca/html/cookbook.html) - place for electronics enthisiasts to share circuit ideas with others
Electronic Projects Online (http://www.electronic-projects.net/) - contains 25 of the most popular magazine projects designed by Paul Stenning for various electronics magazines between 1993 and 1997
Electronics 2000 Project Pages (http://www.citycom.gr/electronics/projects/circuitslab.htm) - projects with circuit board, theoritical diagramm and description, many circuit from Smartkit electornics kits
Electronics and Radio Section (http://www.montagar.com/%7Epatj/electro.htm) - radio, tube audio, tesla, software
Electronics circuit designed by Tomi Engdahl (http://www.hut.fi/Misc/Electronics/circuits/index.html) - audio, video, computers, telephone, light effects, measuring, power supplies, electronics documents
Electronics circuits / do-it-yourself homepage (http://electronicsworld.tripod.com/) - this site contains thousands of electronics circuits & do-it-yourself circuits relating to a wide range of categories like audio,music,home/garden related,computer hardware,radio,robotics etc.
Electronic Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - simple circuits, radio, flasher, amplifier
Electronics for You Circuit Lab (http://www.electronicsforu.com/) - circuits and short articles describing them
Electronic Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - lots of different simple circuits for different applications
Electronics Projects by Paul Taylor (http://www.p5taylor.btinternet.co.uk/projects.htm) - some simple electronics projects
Electrical circuits for model railroad hobbyists (http://www.mrollins.com/circuit.html) - light flashers, constant light, power supplies
Electronic Cookbook Archive (http://www.ee.ualberta.ca/html/cookbook.html) - very good electronics circuit archive, also available using FTP (ftp://ftp.ee.ualberta.ca/pub/cookbook/)
Electrical Engineering Circuits Archive (http://www.ee.washington.edu/circuit_archive/) - lots of small circuits, ideas and datasheets
Electronic Design Ideas For Design (http://www.planetee.com/index.htm?page=ideas.jsp) - many useful circuit ideas
Electronique Schémathčque (http://membres.tripod.fr/prototypeur/html/menu2.htm) - different circuit sections on many areas, text in French
Electronics Gadgets for Radio Control (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm)
Electro Tech Projects (http://www.v-sector.com/%7Eet/projects/) - simple projects like transmitters, lie detector, battery charger, DTMF, flashers, strobe and TV remote blocker
Elektroniikan harjoitustöitä (http://www.dlc.fi/%7Ekyostib/elektro/index.htm) - simple electronics circuits, instructions in Finnish
ElectronicsZone (http://www.electronic-circuits-diagrams.com/) - tons of free electronic circuits arranged into different categories
Electronics Zone (http://electronicsworld.tripod.com/) - This site contains lots of circuit diagrams & do-it-yourself circuits for hobbyists, students,professionals etc. relating to a wide range of categories like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few.
Elliott Sound Products Audio Design and Information Pages (http://www.sound.au.com/)
Elliott Sound Products Audio Project Pages (http://sound.westhost.com/projects.htm)
ESP Audio Projects (http://www.sound.au.com/projects.htm) - power amplifiers, power supplies, crossovers, miscial instrument circuits, mixers,
FC's Electronic Circuits (http://www.solorb.com/gfc/elect/) - solar power circuits, FM broadcasting, NiCd charger and other circuits
FC's Solar Circuits (http://www.solorb.com/gfc/elect/solarcirc/)
ftp.armory.com (http://ftp.unina.it/pub/electronics/ftp.armory.com/) - microcontroller information and circuits
GEO's Effects Projects and Tech Tips (http://www.geofex.com/fxprojex.htm) - This page has many audio effect circuits.
George Krilov audio schematics page (http://www.geocities.com/ResearchTriangle/Node/2356/) - page is about transistor audio power amplifiers, contains articles about power amplifiers shematics, design, construction and SPICE simulation, page is partially in English and partially in Russian
GEO's Effect Schematics (http://www.geofex.com/schemata.htm#vintage%20effects) - collection of vintage and new-design effects and musical related DIY
Glolab Free Schematic Diagrams (http://www.glolab.com./freeinfo/info.html) - wireless circuits, motion detector, encoder, decoder, PIR, RF, telephone, video
Gonz Projects (http://users.swing.be/gonzague.colpaert/circuits.html) - power supplies, automation, signal generators, frequency meter, text in French
Guitar Effects Boxes (http://www.geocities.com/CollegePark/Library/1355/) - guitar effect schematics and articles
Guitar Effects Schematics (http://www.muzique.com/schem/index.html)
Guitar-related Circuits (http://www.montagar.com/%7Epatj/gindex.htm) - effect circuit collection
HAM radio circuits at nic.funet.fi (ftp://nic.funet.fi/pub/ham/) - some circuit for radio amateurs
Hardware Web (http://www.nctnico.cistron.nl/index.htm) - software, links and midi circuits
Harry's Homebrew Homepage (http://www.geocities.com/SiliconValley/3569/) - very many radio related projects
Harry's Homebrew Homepage by Harry Lythall SM0VPO/G4VVJ
HeadWize Projects (http://www.headwize.com/projects/) - many headphone amplifiers and related circuits
Electronic projects by Roberto Barrios (http://www.qsl.net/eb4eqa/) - HAM radio programming cables, Luxman I Bus Interface, SPDIF adapter, serial port power booster, radio interface box
Electronics Hobby Projects (http://nazrul.8k.com/projects.htm)
Homebrew Test equipment (http://noname.cmpe.ubc.ca/pierre/testequ.htm) - test equipment built by experimenters and amateur radio enthusiasts
Homebrew Test Equipment and Software - several projects which will allow you to build your own RF design test equipment
Hybrid Circuits Base (http://www.omninet.co.jp/workshop/hybrid/hybrid.htm) - circuits with analogue and digital parts in them
Ideaport (http://welcome.to/ideaport) - electronics circuit for school projects, text in Finnish
IECMaster Circuits (http://www.geocities.com/IECMaster/elec_cir.html) - Circuits for audio, music, power supply, RF, video, telephone, measurement and alarm applications.
Imagineering On-Line Magazine Hobby Circuits (http://www.imagineeringezine.com/e-zine/hcircuits.html) - wide variety of circuits, tens of circuits
JF1OZL QRP Hand Made Radio (http://www.intio.or.jp/jf10zl/index.html) - very many amateur radio links
Keith's Rainy Day Projects (http://private.addcom.de/KeithWilson/home.htm) -
Kelly Kohls, N5TLE Homepage (http://www.qsl.net/n5tle/) - DMX 512 Light control circuits
Kobra Electronic Free Schematic Page (http://www.geocities.com/kobraelectronic/) - 300 free circuit diagrams
Laurier's Handy Dandy Little Circuits (http://members.home.net/roma60/) - site for electronic hobbyists, includes all kins of small electronics hobby circuits
Library of circuits (http://www.geocities.com/IECMaster/cir_rfv023.html) - This library currently contains 285 circuits in 15 categories. Each circuit comes complete with a list of parts, and a datasheet for each IC, Diode, and Transistor (as available).
Library of Practical Electronics (http://people.ne.mediaone.net/fstewart/viewer.html) - circuits and articles from sci.electronics.* newsgroups
Linear Electronics Troubleshooter (http://www.geocities.com/CapeCanaveral/5322/)- contais lots of circuits from power supplies and pulse generators to PLC laddler logic controlling
Manic Hand Builder (http://www.try-net.or.jp/%7Ejr6end/eindex.html) - Pure amateur hand builders webpage for HAM. Designing PCB mask pattern by MS-paint, make own UV-sensitive thin-filmed PCB from junk PCB. Build DDS VFO controled by PIC16F84. Build ARDF receiver, using PLL LO, controlled with PIC.
Maxwell electronica (http://esp.lanzan.com/) - Electronic circuits and tutorials in Spanish.
Microchip Net resources (http://www.geocities.com/SiliconValley/Way/5807/dat.html) - PIC project link list
Model Railroad Electronic Circuit List (http://www.mrollins.com/circuit.html) - Many simple electronics circuits not show in a schematic drawing but using simple wiring drawings.
Music Electronics µArchive (http://audible.transient.net/archive/) - music circuits and audio electronics information
Music Machines do-it-yourself/schematics (http://machines.hyperreal.org/categories/do-it-yourself/schematics/) - music electronics circuits and electronic musical instruments
Mycal's Micro Radio Page (http://www.mycal.net/projects/mpr/) - radio transmitters, antennas and amplifiers
Nathan's Audio And Electronic Webpage (http://easyweb.easynet.co.uk/%7Ercallender/electron.htm) - audio circuits
Nick's Circuits collection (http://www.circuits.da.ru/) - infrared, telephone, sound, smartcard, filters
North Country Radio Kit Schematics (http://www.northcountryradio.com/schmatic.htm) - only circuit diagrams of RF kits with no component values shown
Olec Electronics & Computer Club Hobby Electronics Circuits & Ideas (http://olec.8k.com/circuit.htm)
Ozitronics Audio Amplifiers & Voice Recorders (http://www.ozitronics.com/audio.html) - kit catalogue which includes full circuit diagrams
Packet BBS NL3ASD Amsterdam (http://www.nl3asd.com/) - schematic section contains lots of HAM related circuits
PC Elektroniikkaa (http://koti.mbnet.fi/janive/pce/) - Simple circuits which connect to PC and PC port information. Text in this site is in Finnish.
Peter's Electronics Playground (http://petar.topcities.com/) - stepper motor driver, data acquisition with A/D converter, onnecting via parallel port, LCD interfacing, PIC measurement device with LCD and A/D
PI6ATV software and circuits (http://members.tripod.lycos.nl/PI6ATV/software.htm) - amateur TV related circuits and software, radio, video
PIC16C505 Related Information (http://www.microchip.com/1010/pline/picmicro/families/16c5x/devices/16c505/related/m20/index.htm) - Application notes.
PIC16C54A Related Information (http://www.microchip.com/1010/pline/picmicro/families/16c5x/devices/16c54a/related/m20/index.htm) - Application notes.
PIC / Ubicom Dev'rs (http://www.devrs.com/pic/apps.php) - communication circuits using PIC, encryption, interfacing, Internet applications using PIC and many other PIC circuit
Pro Audio Equipment Schematics Page (http://www.waltzingbear.com/%7Eaudio/Schematics/Schematics.html) - Alan Garren's excellent listing of vintage gear schematics including API, UREI, Altec, RCA and more
Programmers Heaven Amiga Hacks and Projects (http://www.programmersheaven.com/zone20/cat268/) - Amiga circuits
Prolectron Electronics Schematics (http://www.prolectron.com/elect/) - electret microphone circuits, opamp circuits and simple transistor circuits
RadioLockman database of circuit's links (http://www.rlocman.com.ru/en/)
Randy Linscott Projects of the Month (http://home.maine.rr.com/randylinscott/project.htm) - many interresting projects
RED Free Circuit Design (http://space.tin.it/scienza/fladelle/) - amplifiers, measuring equipments, health circuits, hobby model circuits, music circuits
Richard Steven Walz's Electronics Circuits FTP site (ftp://ftp.armory.com/pub/user/rstevew) - over 900 electronics ascii files
Robin Tomtlund-The Electronic Page (http://hem.passagen.se/robin2/effects.htm) - guitar effect circuits
Rollins World Wide Web Circuits (http://www.mrollins.com/circuit.html) - simple electrical circuits for beginners
Russian Electronic (http://www.logicnet.ru/%7Eelectron/english/schem.htm) - circuits in many categories, many texts in Russian but some in English
Rutger's World of Model Railroad Electronics (http://www.hobby.se/Rutger/Rutger.html)
S51KQ hardware & software (http://lea.hamradio.si/%7Es51kq/HWS51KQ.HTM) - ATV, antenna, video circuits, PLL, LANC, DV, paging, FM broadcasting
Sam Electronic Circuits (http://users.otenet.gr/%7Eathsam/circuits.htm) - Electronic Circuits for the Hobbyist. Audio and digital,useful circuits with full description and diagrams. Text in English and Greek.
Saint Audio Do It Yourself Zone (http://www.diyaudio.8m.com/) - small circuits, speakes, hifi circuits, tybe amplifiers, DIY cables
Salvio Klaic's electroni section (http://student.math.hr/%7Esklaic/electronics/) - tranformers, IC testers
Sam's Schematic Collection (http://www.misty.com/people/don/samschem.htm) - various schematics and diagrams
Schematics FM transmitters (http://www.pcs-electronics.com/Guide/g5.shtml) - collection of FM transmitter circuits
Science & Technology of high voltage generators (http://home.earthlink.net/%7Egweaver/hv-page.htm) - A page on high voltage multipliers, a circuit on driving flybacks (with a large capacitor as protection) and power supplies
SDS Labs Schematics (http://www.quadesl.com/schematics.shtml) - hifi circuits, tube amplifiers, audio DACs
Shirly's Schematics (http://www.electronics.50g.com/call.htm)
Simple Circuit (http://simplecircuits.cjb.net/) - lots of circuits in many categories
Simple Circuits using PIC 12Cxxx microcontroller (http://www.microchip.com/1010/suppdoc/appnote/category/12cxxx/masters/scircuit/index.htm)
Snock's High Voltage Page (http://www.geocities.com/CapeCanaveral/Lab/5322/hv2.html) - detailed explanation on flyback, ignition coil circuits and pictures of various transformers
SP-Elektroniikka kytkennät 1 (http://www.spelektroniikka.fi/kytkis1.htm) - light controlling, amplifiers, meters and remote controllers, text in Finnish, circuti board design available for most of projects
SP-Elektroniikka kytkennät 2 (http://www.spelektroniikka.fi/kytkis2.htm) - light controlling, amplifiers, meters and remote controllers, text in Finnish, circuti board design available for most of projects
Synthfool Lite Schematics (http://www.sonicstate.com/synthfool/schm.html) - many musical instrument and effect circuit diagrams
Switching Circuits (http://www.mitedu.freeserve.co.uk/Circuits/Switching/switch.html) - collection of switching circuits for temperature, light level and button controlled switching
Technick.net Circuits Collection (http://www.technick.net/index.php?load_page=http://www.technick.net/circuits.php) - infra red, telephone, sound, smartcard, PIC, power supply, filters
The Electric Wave (http://www.geocities.com/CapeCanaveral/Lab/5185/electronics.html) - selection of various hobby circuits
The Electronic Resource (http://www.geocities.com/fishziblu/) - IO interfacing via ISA card or parallel port, single board computers, robotics
The GEO-Fex collection of vintage and new-design effects and musical related DIY (http://www.geofex.com/schemata.htm)
The Guitar Effects Oriented Web Page (http://www.geofex.com/) - FAQs and circuit diagrams
The Nexus Project (http://nexus.thoic.net/) - Video conversion and Macrovision removing circuits.
Tjaco's design graveyard (http://www.geocities.com/tjacodesign/) - HIFI, EPROM, IR remote, tesla coil, high voltage, telephone, dimmer, timer
Tronnort Technology Electronics Projects (http://members.ozemail.com.au/%7Edljones/projects.htm) - video, storage oscilloscope, frequency counter, logic analyzer, EPROM programmers, RS.485 multiplexer
USB Code Examples for PIC (http://www.microchip.com/1010/pline/picmicro/families/16c7xx/demos/index.htm) - PIC16C745/765 code for Jan Axelson's VB demo, USB Descriptor Wizard, HIDComm ActiveX Control, PS/2 to USB Mouse, PS/2 to USB Keyboard, Gameport to USB Gamepad
VK2TIP Ian Purdie's radio design tutorial pages (http://www.integritynet.com.au/%7Epurdic/index.html#Contents) - for amateur, ham radio, electronic project enthusiasts as well as the electronic hobbyist
W.A. Steer (http://www.ucl.ac.uk/%7Eucapwas/) - ADC, video digitizer, RS232 solutions, science experiment circuits
WebEE Schematics Page (http://www.epanorama.net/mirror/web-ee/Schematics/schematics.htm) - large collection of circuits, mirrored to www.epanorama.net from WebEE site (http://www.web-ee.com/Schematics/schematics.htm)
WE-MAN's Electro stuff (http://margo.student.utwente.nl/el/) - many circuits and documents
Wenzel Associates Technical Library (http://www.wenzel.com/documents/library.html) - application notes and circuits
Wenzel Associates Circuit Notebook (http://www.techlib.com/electronics/index.html) - for Engineers and Hobbyists
World Of Electronics (http://www.woe.de.vu/) - electronics projects in German, electronics display projects
Xexorz Schematics (http://members.tripod.com/xexorz/schematics.html) - radiation meter, radio circuits, IR circuits, light circuits
4QD Electronics Circuits Reference Archive (http://www.4qdtec.com/) - 4QD's pages of interesting circuits with wide selection of small circuits useful as building blocks for electronic systems
Aaron's Electronic Circuits (http://www.aaroncake.net/circuits/index.asp) - light, laser, sound, radio, PSU, car
Alfred73 Electronics (http://digilander.iol.it/alfred73/elettronicae.htm) - SMT Desoldering Station, Infrared Receiver, line in use, VGA to TV, power supply
Amateurfunk- und Elektronik-Projekte (http://userpage.fu-berlin.de/%7Edl7awl/afuproj.htm) - amateur radio electronics project in German
Amazon Electronics Free Circuits (http://electronics123.com/amazon/datasheet/default.htm) - audio, computers, controllers, testers, light effects, microcontrollers, power supplies, radio, security, timers, circuit can be also bought as complete kits from Amazon Electronics (http://electronics123.com/)
Ampage (http://www.firebottle.com/ampage/) - guitar effects and music electronics
Analog Circuits Webpage (http://www.omninet.co.jp/workshop/analog/analog.htm) - audio, video and more appliacations
Analog Music Zone Guitar Effects Schematics (http://www.muzique.com/schem/index.html) - guitar effects, compressors, microphones and effects
Andrew Buckin Projects (http://www.geocities.com/ipm_grp/) - VGA generator, SVGA generator, IDE2LPT, CPLD projects
Antenna Scope, Attenuators,RF Probe, MORE! (http://www.qsl.net/we6w/text/projects.html)
Applications of neon glow lamps (http://www.eurisco.com/jack/neon/neon-e.shtml) - some applications of neon glow lamps
Aquarium Related Electronics (http://www.cyberreefguru.com/fish/electronic/index.html) - pH meters, thermometers
Aren's Attic: How to build your own audio equipment (http://members.tripod.lycos.nl/Aren/index.htm) - loudspeakers, solid-state amplifiers and tube amplifiers
Audio Designs Guide (http://www.geocities.com/ResearchTriangle/8231/#INDICE)
Audio Electronics Page (http://www.infomaniak.ch/%7Ebonavolt/audioel.htm) - amplifiers, preamplifiers, power supplies
Batronix.com (http://www.batronix.com/) - electronic circuits, information, software and datasheets to download for electronics hobbyists, programmers for EPROMs and microcontrollers
Bebec Electronic kytkinkaavat (http://www.bebek.fi/kytkinkaavat.html) - dozen different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures
Bebek Electronic rakennussarjat (http://www.bebek.fi/kytkis.html) - five different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures
Beyond Logic (http://www.beyondlogic.org/) - PC interfacing projects
Bob Blick's Assorted Electronics Projects (http://www.bobblick.com/bob/projects/index.html)
Bowden's Hobby Circuits (http://ourworld.compuserve.com/homepages/Bill_Bowden/) - collection of electronic circuits for the hobbyist or student
Brainstorming page (http://home.t-online.de/home/Holger.Heinemann/) - electronics hobby circuits, page is in German but you can try to access it using automatic English translation (http://babelfish.altavista.com/translate.dyn?url=http://home.t-online.de/home/Holger.Heinemann/&lp=de_en)
Burning Flux (http://www.andrewkilpatrick.org/burning_flux.html) - musical instruments and audio/video projects
Circuit Central (http://www.eed.usv.ro/misc/mirrors/cc/circuits.htm) - This library currently contains 285 circuits in 15 categories.
Circuit Exchange International (http://www.mitedu.freeserve.co.uk/) - schematics on radio and electronics, circuit analysis, circuit theory and electronic design
Circuits from Forrest Cook (http://www.solorb.com/gfc/elect/) - NiCD charger, radio, audio, microprocessor
Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - many quite simple circuits
Circuit Lab (http://www.electronicsforu.com/main/circuit/index.asp) - lots of different circuits from Electronics for You magazine (http://www.electronicsforu.com/)
Circuits Online (http://www.circuitsonline.f2s.com/circuits/) - Dutch electronics site with circuits, forum, datasheets, links, downloads, articles, info, newsletter, etc.
Classic and Vintage Audio Circuits Page (http://w3.one.net/%7Erobgrow/circuits/circuits2.html) - some audio equipment circuits and links
CommLinx Solutions circuit links (http://commlinx.com.au/schematics.htm) - Links to hundreds of circuit schematics available on the Web formatted onto a single convenient page
Computer Hardware Projects (http://www.geocities.com/tangmonster911/computerhard.htm) - computer oscilloscope and car MP3 project
Cool Schematics (http://www.mif.pg.gda.pl/homepages/tom/schematics.htm) - solid state and tube guitar amplifier circuits
Crystal Radio Projects (http://www.datasync.com/%7Eignatz/electro.htm) - AM receivers, FM receiver, tesla
CyberCircuit Circuit Archive (http://www.uslink.net/%7Ecybercir/archive.htm) - many different circuit ideas
CXI Schematics (http://www.mitedu.freeserve.co.uk/Circuits/cctindex.html) - alarm, security, control, interfacing, music effects, radio, power supplies, switching, test gear
Dan Fraser's Electronic Info & Schematic Page (http://www.nav.to/techman10) - audio circuits, monitor repair
DesignNotes.com Free Circuits Archives (http://www.designnotes.com/Circuits.htm)
Diana's Electronics Info Page (http://members.tripod.com/%7Eschematics/electro.htm) - simple amplifiers, solid state oscilloscope, stepper motor projects, led circuits
DIBs Circats (http://www.psyber.com/%7Edibsed/dcircats.html) - Schematics of simple circuits in GIF and PDF format: audio circuits, power supply, logic and microprocessor
Die Xedox Elektronikseiten (http://xedox.de/projekt.html) - some electronics project, text in German
Digital Circuits Webpage (http://www.omninet.co.jp/workshop/digital/digital.htm) - gate applications, flip-flop, counter, computer I/O, display, RS-232
Discover Circuits (http://www.discovercircuits.com/list.htm) - a collection of schematics quick solutions for electronic engineering problems compiled by David A. Johnson
DIY Audio Amplifier Page (http://www.vision.net.au/%7Eanthony/) - audio power amplifiers
DMZ Schematics (http://members.aol.com/jorman/schem.html)
Dr Bob's Electronic Projects (http://www.drbob.net/project/eproj.html) - amplifier circuits, chargers, flashers, meters, motor, oscillator and power supply
EDN Archives (http://www.ednmag.com/ednmag/archive.asp) - contains past issues of EDN magazies which contain design ideas and other circuits
EDN's Design Ideas Archives (http://www.ednmag.com/ednmag/SearchDID.asp) - circuit archive which you can access with search engine
Effect Rack Unit (http://hem.fyristorg.com/effects/rack_k.htm) - contains very many guitar effect unit circuit diagrams
Effectronics Schematics (http://www.geocities.com/CollegePark/Library/1355/schematics.htm) - audio processing and effect circuits
ELEC.de (http://www.elec.de/) - large circuit page, text in German, you can use automatic translation to English (http://babelfish.altavista.com/translate.dyn?url=http://www.elec.de/&lp=de_en)
Electronic Gaggets for Radio Control (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm) - tutorials, circuits and datasheets
Electronics 2000 (http://www.citycom.gr/electronics/downcircuits/morecir_1.htm) - tens of different circuits to download
Electronics 2000 (http://users.auth.gr/%7Emixos/projects/board.htm) - many different electronics circuits on two alternative laguages
Electronics and schematics (http://www.tuug.fi/%7Eisaarine/electronics/) - some PC parallel port and RC servo circuits
Electronics Infoline (http://www.electronicsinfoline.com/) - electronics circuits portal
Elecronics Projects for R/C (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm)
Electric Model Aircraft Circuit Diagrams (http://www.vision.net.au/%7Etimotsc/elecmod2.htm)
Electronic Circuit Beans Collection (http://www.interq.or.jp/japan/se-inoue/e_ckt.htm) - small circuit useful as building blocks, oscillators, power supplies
Electronic-Circuits for Model-Aircrafts (http://jaichi.virtualave.net/) - contains also some microcontroller projects
Electronic Cookbook Archive (http://www.ee.ualberta.ca/html/cookbook.html) - place for electronics enthisiasts to share circuit ideas with others
Electronic Projects Online (http://www.electronic-projects.net/) - contains 25 of the most popular magazine projects designed by Paul Stenning for various electronics magazines between 1993 and 1997
Electronics 2000 Project Pages (http://www.citycom.gr/electronics/projects/circuitslab.htm) - projects with circuit board, theoritical diagramm and description, many circuit from Smartkit electornics kits
Electronics and Radio Section (http://www.montagar.com/%7Epatj/electro.htm) - radio, tube audio, tesla, software
Electronics circuit designed by Tomi Engdahl (http://www.hut.fi/Misc/Electronics/circuits/index.html) - audio, video, computers, telephone, light effects, measuring, power supplies, electronics documents
Electronics circuits / do-it-yourself homepage (http://electronicsworld.tripod.com/) - this site contains thousands of electronics circuits & do-it-yourself circuits relating to a wide range of categories like audio,music,home/garden related,computer hardware,radio,robotics etc.
Electronic Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - simple circuits, radio, flasher, amplifier
Electronics for You Circuit Lab (http://www.electronicsforu.com/) - circuits and short articles describing them
Electronic Circuits for the Hobbyist (http://www.uoguelph.ca/%7Eantoon/circ/circuits.htm) - lots of different simple circuits for different applications
Electronics Projects by Paul Taylor (http://www.p5taylor.btinternet.co.uk/projects.htm) - some simple electronics projects
Electrical circuits for model railroad hobbyists (http://www.mrollins.com/circuit.html) - light flashers, constant light, power supplies
Electronic Cookbook Archive (http://www.ee.ualberta.ca/html/cookbook.html) - very good electronics circuit archive, also available using FTP (ftp://ftp.ee.ualberta.ca/pub/cookbook/)
Electrical Engineering Circuits Archive (http://www.ee.washington.edu/circuit_archive/) - lots of small circuits, ideas and datasheets
Electronic Design Ideas For Design (http://www.planetee.com/index.htm?page=ideas.jsp) - many useful circuit ideas
Electronique Schémathčque (http://membres.tripod.fr/prototypeur/html/menu2.htm) - different circuit sections on many areas, text in French
Electronics Gadgets for Radio Control (http://www.uoguelph.ca/%7Eantoon/gadgets/gadgets.htm)
Electro Tech Projects (http://www.v-sector.com/%7Eet/projects/) - simple projects like transmitters, lie detector, battery charger, DTMF, flashers, strobe and TV remote blocker
Elektroniikan harjoitustöitä (http://www.dlc.fi/%7Ekyostib/elektro/index.htm) - simple electronics circuits, instructions in Finnish
ElectronicsZone (http://www.electronic-circuits-diagrams.com/) - tons of free electronic circuits arranged into different categories
Electronics Zone (http://electronicsworld.tripod.com/) - This site contains lots of circuit diagrams & do-it-yourself circuits for hobbyists, students,professionals etc. relating to a wide range of categories like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few.
Elliott Sound Products Audio Design and Information Pages (http://www.sound.au.com/)
Elliott Sound Products Audio Project Pages (http://sound.westhost.com/projects.htm)
ESP Audio Projects (http://www.sound.au.com/projects.htm) - power amplifiers, power supplies, crossovers, miscial instrument circuits, mixers,
FC's Electronic Circuits (http://www.solorb.com/gfc/elect/) - solar power circuits, FM broadcasting, NiCd charger and other circuits
FC's Solar Circuits (http://www.solorb.com/gfc/elect/solarcirc/)
ftp.armory.com (http://ftp.unina.it/pub/electronics/ftp.armory.com/) - microcontroller information and circuits
GEO's Effects Projects and Tech Tips (http://www.geofex.com/fxprojex.htm) - This page has many audio effect circuits.
George Krilov audio schematics page (http://www.geocities.com/ResearchTriangle/Node/2356/) - page is about transistor audio power amplifiers, contains articles about power amplifiers shematics, design, construction and SPICE simulation, page is partially in English and partially in Russian
GEO's Effect Schematics (http://www.geofex.com/schemata.htm#vintage%20effects) - collection of vintage and new-design effects and musical related DIY
Glolab Free Schematic Diagrams (http://www.glolab.com./freeinfo/info.html) - wireless circuits, motion detector, encoder, decoder, PIR, RF, telephone, video
Gonz Projects (http://users.swing.be/gonzague.colpaert/circuits.html) - power supplies, automation, signal generators, frequency meter, text in French
Guitar Effects Boxes (http://www.geocities.com/CollegePark/Library/1355/) - guitar effect schematics and articles
Guitar Effects Schematics (http://www.muzique.com/schem/index.html)
Guitar-related Circuits (http://www.montagar.com/%7Epatj/gindex.htm) - effect circuit collection
HAM radio circuits at nic.funet.fi (ftp://nic.funet.fi/pub/ham/) - some circuit for radio amateurs
Hardware Web (http://www.nctnico.cistron.nl/index.htm) - software, links and midi circuits
Harry's Homebrew Homepage (http://www.geocities.com/SiliconValley/3569/) - very many radio related projects
Harry's Homebrew Homepage by Harry Lythall SM0VPO/G4VVJ
HeadWize Projects (http://www.headwize.com/projects/) - many headphone amplifiers and related circuits
Electronic projects by Roberto Barrios (http://www.qsl.net/eb4eqa/) - HAM radio programming cables, Luxman I Bus Interface, SPDIF adapter, serial port power booster, radio interface box
Electronics Hobby Projects (http://nazrul.8k.com/projects.htm)
Homebrew Test equipment (http://noname.cmpe.ubc.ca/pierre/testequ.htm) - test equipment built by experimenters and amateur radio enthusiasts
Homebrew Test Equipment and Software - several projects which will allow you to build your own RF design test equipment
Hybrid Circuits Base (http://www.omninet.co.jp/workshop/hybrid/hybrid.htm) - circuits with analogue and digital parts in them
Ideaport (http://welcome.to/ideaport) - electronics circuit for school projects, text in Finnish
IECMaster Circuits (http://www.geocities.com/IECMaster/elec_cir.html) - Circuits for audio, music, power supply, RF, video, telephone, measurement and alarm applications.
Imagineering On-Line Magazine Hobby Circuits (http://www.imagineeringezine.com/e-zine/hcircuits.html) - wide variety of circuits, tens of circuits
JF1OZL QRP Hand Made Radio (http://www.intio.or.jp/jf10zl/index.html) - very many amateur radio links
Keith's Rainy Day Projects (http://private.addcom.de/KeithWilson/home.htm) -
Kelly Kohls, N5TLE Homepage (http://www.qsl.net/n5tle/) - DMX 512 Light control circuits
Kobra Electronic Free Schematic Page (http://www.geocities.com/kobraelectronic/) - 300 free circuit diagrams
Laurier's Handy Dandy Little Circuits (http://members.home.net/roma60/) - site for electronic hobbyists, includes all kins of small electronics hobby circuits
Library of circuits (http://www.geocities.com/IECMaster/cir_rfv023.html) - This library currently contains 285 circuits in 15 categories. Each circuit comes complete with a list of parts, and a datasheet for each IC, Diode, and Transistor (as available).
Library of Practical Electronics (http://people.ne.mediaone.net/fstewart/viewer.html) - circuits and articles from sci.electronics.* newsgroups
Linear Electronics Troubleshooter (http://www.geocities.com/CapeCanaveral/5322/)- contais lots of circuits from power supplies and pulse generators to PLC laddler logic controlling
Manic Hand Builder (http://www.try-net.or.jp/%7Ejr6end/eindex.html) - Pure amateur hand builders webpage for HAM. Designing PCB mask pattern by MS-paint, make own UV-sensitive thin-filmed PCB from junk PCB. Build DDS VFO controled by PIC16F84. Build ARDF receiver, using PLL LO, controlled with PIC.
Maxwell electronica (http://esp.lanzan.com/) - Electronic circuits and tutorials in Spanish.
Microchip Net resources (http://www.geocities.com/SiliconValley/Way/5807/dat.html) - PIC project link list
Model Railroad Electronic Circuit List (http://www.mrollins.com/circuit.html) - Many simple electronics circuits not show in a schematic drawing but using simple wiring drawings.
Music Electronics µArchive (http://audible.transient.net/archive/) - music circuits and audio electronics information
Music Machines do-it-yourself/schematics (http://machines.hyperreal.org/categories/do-it-yourself/schematics/) - music electronics circuits and electronic musical instruments
Mycal's Micro Radio Page (http://www.mycal.net/projects/mpr/) - radio transmitters, antennas and amplifiers
Nathan's Audio And Electronic Webpage (http://easyweb.easynet.co.uk/%7Ercallender/electron.htm) - audio circuits
Nick's Circuits collection (http://www.circuits.da.ru/) - infrared, telephone, sound, smartcard, filters
North Country Radio Kit Schematics (http://www.northcountryradio.com/schmatic.htm) - only circuit diagrams of RF kits with no component values shown
Olec Electronics & Computer Club Hobby Electronics Circuits & Ideas (http://olec.8k.com/circuit.htm)
Ozitronics Audio Amplifiers & Voice Recorders (http://www.ozitronics.com/audio.html) - kit catalogue which includes full circuit diagrams
Packet BBS NL3ASD Amsterdam (http://www.nl3asd.com/) - schematic section contains lots of HAM related circuits
PC Elektroniikkaa (http://koti.mbnet.fi/janive/pce/) - Simple circuits which connect to PC and PC port information. Text in this site is in Finnish.
Peter's Electronics Playground (http://petar.topcities.com/) - stepper motor driver, data acquisition with A/D converter, onnecting via parallel port, LCD interfacing, PIC measurement device with LCD and A/D
PI6ATV software and circuits (http://members.tripod.lycos.nl/PI6ATV/software.htm) - amateur TV related circuits and software, radio, video
PIC16C505 Related Information (http://www.microchip.com/1010/pline/picmicro/families/16c5x/devices/16c505/related/m20/index.htm) - Application notes.
PIC16C54A Related Information (http://www.microchip.com/1010/pline/picmicro/families/16c5x/devices/16c54a/related/m20/index.htm) - Application notes.
PIC / Ubicom Dev'rs (http://www.devrs.com/pic/apps.php) - communication circuits using PIC, encryption, interfacing, Internet applications using PIC and many other PIC circuit
Pro Audio Equipment Schematics Page (http://www.waltzingbear.com/%7Eaudio/Schematics/Schematics.html) - Alan Garren's excellent listing of vintage gear schematics including API, UREI, Altec, RCA and more
Programmers Heaven Amiga Hacks and Projects (http://www.programmersheaven.com/zone20/cat268/) - Amiga circuits
Prolectron Electronics Schematics (http://www.prolectron.com/elect/) - electret microphone circuits, opamp circuits and simple transistor circuits
RadioLockman database of circuit's links (http://www.rlocman.com.ru/en/)
Randy Linscott Projects of the Month (http://home.maine.rr.com/randylinscott/project.htm) - many interresting projects
RED Free Circuit Design (http://space.tin.it/scienza/fladelle/) - amplifiers, measuring equipments, health circuits, hobby model circuits, music circuits
Richard Steven Walz's Electronics Circuits FTP site (ftp://ftp.armory.com/pub/user/rstevew) - over 900 electronics ascii files
Robin Tomtlund-The Electronic Page (http://hem.passagen.se/robin2/effects.htm) - guitar effect circuits
Rollins World Wide Web Circuits (http://www.mrollins.com/circuit.html) - simple electrical circuits for beginners
Russian Electronic (http://www.logicnet.ru/%7Eelectron/english/schem.htm) - circuits in many categories, many texts in Russian but some in English
Rutger's World of Model Railroad Electronics (http://www.hobby.se/Rutger/Rutger.html)
S51KQ hardware & software (http://lea.hamradio.si/%7Es51kq/HWS51KQ.HTM) - ATV, antenna, video circuits, PLL, LANC, DV, paging, FM broadcasting
Sam Electronic Circuits (http://users.otenet.gr/%7Eathsam/circuits.htm) - Electronic Circuits for the Hobbyist. Audio and digital,useful circuits with full description and diagrams. Text in English and Greek.
Saint Audio Do It Yourself Zone (http://www.diyaudio.8m.com/) - small circuits, speakes, hifi circuits, tybe amplifiers, DIY cables
Salvio Klaic's electroni section (http://student.math.hr/%7Esklaic/electronics/) - tranformers, IC testers
Sam's Schematic Collection (http://www.misty.com/people/don/samschem.htm) - various schematics and diagrams
Schematics FM transmitters (http://www.pcs-electronics.com/Guide/g5.shtml) - collection of FM transmitter circuits
Science & Technology of high voltage generators (http://home.earthlink.net/%7Egweaver/hv-page.htm) - A page on high voltage multipliers, a circuit on driving flybacks (with a large capacitor as protection) and power supplies
SDS Labs Schematics (http://www.quadesl.com/schematics.shtml) - hifi circuits, tube amplifiers, audio DACs
Shirly's Schematics (http://www.electronics.50g.com/call.htm)
Simple Circuit (http://simplecircuits.cjb.net/) - lots of circuits in many categories
Simple Circuits using PIC 12Cxxx microcontroller (http://www.microchip.com/1010/suppdoc/appnote/category/12cxxx/masters/scircuit/index.htm)
Snock's High Voltage Page (http://www.geocities.com/CapeCanaveral/Lab/5322/hv2.html) - detailed explanation on flyback, ignition coil circuits and pictures of various transformers
SP-Elektroniikka kytkennät 1 (http://www.spelektroniikka.fi/kytkis1.htm) - light controlling, amplifiers, meters and remote controllers, text in Finnish, circuti board design available for most of projects
SP-Elektroniikka kytkennät 2 (http://www.spelektroniikka.fi/kytkis2.htm) - light controlling, amplifiers, meters and remote controllers, text in Finnish, circuti board design available for most of projects
Synthfool Lite Schematics (http://www.sonicstate.com/synthfool/schm.html) - many musical instrument and effect circuit diagrams
Switching Circuits (http://www.mitedu.freeserve.co.uk/Circuits/Switching/switch.html) - collection of switching circuits for temperature, light level and button controlled switching
Technick.net Circuits Collection (http://www.technick.net/index.php?load_page=http://www.technick.net/circuits.php) - infra red, telephone, sound, smartcard, PIC, power supply, filters
The Electric Wave (http://www.geocities.com/CapeCanaveral/Lab/5185/electronics.html) - selection of various hobby circuits
The Electronic Resource (http://www.geocities.com/fishziblu/) - IO interfacing via ISA card or parallel port, single board computers, robotics
The GEO-Fex collection of vintage and new-design effects and musical related DIY (http://www.geofex.com/schemata.htm)
The Guitar Effects Oriented Web Page (http://www.geofex.com/) - FAQs and circuit diagrams
The Nexus Project (http://nexus.thoic.net/) - Video conversion and Macrovision removing circuits.
Tjaco's design graveyard (http://www.geocities.com/tjacodesign/) - HIFI, EPROM, IR remote, tesla coil, high voltage, telephone, dimmer, timer
Tronnort Technology Electronics Projects (http://members.ozemail.com.au/%7Edljones/projects.htm) - video, storage oscilloscope, frequency counter, logic analyzer, EPROM programmers, RS.485 multiplexer
USB Code Examples for PIC (http://www.microchip.com/1010/pline/picmicro/families/16c7xx/demos/index.htm) - PIC16C745/765 code for Jan Axelson's VB demo, USB Descriptor Wizard, HIDComm ActiveX Control, PS/2 to USB Mouse, PS/2 to USB Keyboard, Gameport to USB Gamepad
VK2TIP Ian Purdie's radio design tutorial pages (http://www.integritynet.com.au/%7Epurdic/index.html#Contents) - for amateur, ham radio, electronic project enthusiasts as well as the electronic hobbyist
W.A. Steer (http://www.ucl.ac.uk/%7Eucapwas/) - ADC, video digitizer, RS232 solutions, science experiment circuits
WebEE Schematics Page (http://www.epanorama.net/mirror/web-ee/Schematics/schematics.htm) - large collection of circuits, mirrored to www.epanorama.net from WebEE site (http://www.web-ee.com/Schematics/schematics.htm)
WE-MAN's Electro stuff (http://margo.student.utwente.nl/el/) - many circuits and documents
Wenzel Associates Technical Library (http://www.wenzel.com/documents/library.html) - application notes and circuits
Wenzel Associates Circuit Notebook (http://www.techlib.com/electronics/index.html) - for Engineers and Hobbyists
World Of Electronics (http://www.woe.de.vu/) - electronics projects in German, electronics display projects
Xexorz Schematics (http://members.tripod.com/xexorz/schematics.html) - radiation meter, radio circuits, IR circuits, light circuits