electronics circuit

Bowden’s Hobby Circuits – A collection of electronic circuits for the hobbyist or student, links to related sites, commercial kits and projects, newsgroups and educational areas.
Building Gadgets – A collection of electronics projects, circuits, datasheets, and helpful articles from the authors of “Electronics Projects For Dummies”.
Butterworth Low-Pass Filter – Design of a 5th order Butterworth LP filter using Sallen-Key circuit design.
Circuit Cellar Archive – Nearly every issue is listed from 1988 to 2001, software code.
CircuitDB – A searchable database of schematics and electronic circuit designs such as alarms, audio/video, auto, etc.
Circuits Archive – ASCII circuit diagrams, radio, audio and computer related circuits; data sheets.
CircuitsArchive – A Wiki-based archive of electronic circuits for hobbyists.
Closed Caption Decoder – A simple closed caption decoder for your TV. Schematic, BOM, theory of operation.
Computer Circuits 200 A – A web-based course on designing and troubleshooting digital systems, primarily microcomputer based. Covers basic digital logic ciruits.
CoolCircuit – Electronic circuits, projects, schematics, and software for hobbyists.
CXI Schematics – Schematic index: audio, RF, power, switching and miscellaneous circuits.
Delabs Electronic Schematic Diagrams – Electronic circuit archive, FAQ, freeware, resources directory.
Digital Clock – Easy nixie clock with different microcontrollers.
Discover Circuits – A collections of categorized and cross-referenced electronic circuits or schematics.
EDN Archives – Online magazine articles consist of information about circuits, software programs, listings and helpful tips.
Electro Tech Electronic Projects – An electronic forum. Includes a collection of small electronic circuits.
Electronic Circuit Diagrams – Schematics with descriptions and do-it-yourself electronic projects for hobbyists.
Electronic Circuit Projects – A circuit archive with schematics, descriptions and PCB layouts.
Electronic Circuits – An archive of electronic circuits divided into categories such as power supplies, auto, computer circuits, sound/radio.
Electronic Circuits Directory – A collection of electronic schematics and projects, index of tutorials and design software.
Electronic Circuits for the Hobbyist – Electronics projects, schematics, and tutorials: high voltage, radio control, timers, oscillators, RF transmitters, amplifiers and other.
Electronic Design- Ideas for Design – A circuit archive from Electronic Design magazine.
Electronic Diy Schematics – Electronic schematics: audio amplifiers, radio transmitters, power supplies, oscillators and antennas.
Electronic Info and Schematic Page – Technical references and schematics archive: alarm, audio, auto, etc.
The Electronic Peasant – Dedicated to inexpensive Do-It-Yourself music electronics, electronic salvage/recycling, and alternative energy projects.
Electronic Transmitter Guide – Information on AM, FM, and TV transmitters.
Electronics and Electrical Engineering Resource – Electronics theory, books, construction projects, tips, and practical advice.
Electronics Circuit Analysis Puzzles – Puzzles to master electronic circuit analysis; an electronics tutorial.
Electronics Circuit Forum – Electronic circuits and projects with description, diagrams and PCB, electronics articles.
Electronics Circuit Search Engine – A search engine for electronics circuits.
Electronics Hobbyist – Projects for beginners, articles on electronics and electrical science, Tesla coils, electrostatic devices, and resource links for the hobbyist and educator.
Electronics Infoline – Search engine and categorically organized circuits in a directory.
Electronics Lab – Electronic circuits with full description, diagrams and PCB, electronics articles, links and downloads.
Electronics Zone – Electronic circuits, kits, do-it-yourself, circuit diagrams, design and electronics hobby schematics from alarms to test circuits.
FC’s Electronic Circuits – Circuits on solar power, micro power FM broadcasting, a temperature controlled NICD charger, and more from Forrest Cook; electronics links.
Free Electronics Schematics Diagrams – Electronics diagrams: pro music equipment, vintage tube amplifiers and other; chat room.
GE Power Management – The art and science of protective relaying. A complete online textbook.
Hobby Circuits – A large collection of simple electronic circuits for hobbyists from Imagineering On-line Magazine.
Hobby Electronics – From Japan. S

everal interesting circuits. Some interesting theory and applications.
Home Brew Spectrum Analyzer – How to make a spectrum analyzer with tips and advice on componenet selection and architecture. A large number of circuit ideas and schematics, with sources and construction tips.
Hotwater Electronics Projects – Electronic projects covering GPIB connectivity, instrumentation, microcontrollers, Ham radio and wireless communications with PCBs and key components.
Interactive Electronic Circuits Analysis – Interactive electronic and electrical circuit analysis and tutorial site.
Julien Thomas Enterprises – RS-232 protection and connections schemes. For protecting your Mother Board.
KM’s Site – Home made electronic circuits, software tools, Java scripts, facts and figures for use in electronics engineering. Also features the new JavaScript calculator Magenta2008
Learn Electronics – Schematics with descriptions and do-it-yourself electronic projects for hobbyists.
Music Electronics ?Archive – An archive of tube and transistor amplifiers and information, mostly for music applications.
Publications – Some publications from Avtech, subjects range from VCR monostables to HV stepped recovery diodes.
Ronald?s Electronic Project Site – Fully documented electronic projects, such as stand alone microcontroller circuits and nixie, numitron and decatron clocks.
Rugby PIC Clock – Schematic a construction of a 60kHz time code receiver and clock. Includes PIC programmer and LED clock display.
Sam Electronic Circuits – Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English.
Sam’s Schematic Collection – Includes information about safety, power supplies, Jacobs Ladders, circuits, IR detectors, power oscillators, and schematics.
Small TV Terminal – TV terminal design. Connects TV and PC keyboard to a microcontroller based device.
Synthesizer Home Page – How to make a very nice and stable frequency synthesizer from Harvard. Includes schematics, block diagrams and parts lists. Very through design.
Techlib.com Electronics – Audio, PC, games, phone, oscillator, power, test equipment, and weather related schematics and information.
Television Schematics – Television schematics for electronic specialists who repair TV sets.
Tjaco’s design graveyard – Various electronic schematics including audio, switches, valve amplifiers, and high voltage/power applications.
Tomi Engdahl’s Electronics Pages – Electronic circuits and projects designed by Tomi Engdahl. Audio, video, computer, data communication, light effects and controllers, power supplies, and telephone circuits.
Tonieletronica Circuits – Schematics, PCBs and descritpion of amplifiers, FM transmitter, power sources, battery charger, and other circuits.
40W No Tune FM Broadcast – Power Amplifier Design.
WeMan’s Electro Stuff – Audio tubes, transistors, analog circuits, transistor amplifiers as well as connector pinouts.
Wenzel Associates Technical Library – Time, oscillation and frequency circuits, articles, and tutorials.
WhatCircuits.com – Electronic circuits and electronic projects: audio, automotive, power and other.
Your Electronics Open Source – Electronic projects, firmware, circuit board, reference designs, datasheet, application notes.