| 555 Timer Tutorials -- Soem real handy circuits from Williamson Labs. |
| A personal Home Brew Network analyzer -- A Network Analyzer for your work bench at home, make it your self within a budget. Numerous other RF projects are listed. |
| Basics of Flip Flop ciruits. -- How they work and what they are used for. |
| Bowden"s Hobby Circuits -- Site includes over 100 circuit diagrams, links to related sites, commercial kits and projects, newsgroups and educational areas. |
| Circuit Cellar -- An excellent resource for circuit ideas, theory, and design of all sorts of electronic circuits devices. |
| Circuit Exchange International -- Electronic and radio schematics, design, theory, and circuit analysis. |
| Circuit Ideas from Jameco -- Circuits that are explained well with applications, covers crystals, PICS, sensors, op-amps and multitudes of other technologies. |
| Circuits Archive -- From the EE program at the University of Washington. Includes circuit models, text files, software. |
| Closed caption Decoder -- A simple yet practical closed caption decoder for your TV. |
| Computer Circuits 200 A -- A near complete web based course on digital logic to complete computer systems. Covers all basic digital logic circuits. |
| Computer Circuits 200 B -- A near complete web based course on digital logic to complete computer systems. Covers all basic digital logic circuits. This is the rest of A, this covers what A missed. |
| CXI Schematics -- Schematic index audio RF power, switching and miscellaneous circuits. |
| CyberCircuit Home Page -- Windows programs that allow you to quickly find the exact electrical circuit (or other information) you need. These easy to use programs contain hundreds of circuits. |
| Discover Circuits -- A collections of categorized and cross-referenced electronic circuits or schematics. |
| EDN Access -- Design Idea section consists of multitudes of circuits, software progrmas, listings and generally very good tips. |
| Electronic Circuits -- A nice little archive of some useful circuits. |
| Electronic Circuits for the Hobbyist -- From timers and oscillators to RF transmitters and amplifiers. Simple and fun circuits to build. |
| Electronic Engineers -- Electronics data books, passive and active component makers are listed. |
| Electronic Info and Schematic Page -- Technical references and schematics. Manufacturers include Califone, Daewoo, Dukane, JVC, Panasonic, Peavey, Philips, Pioneer, Rauland, RCA-GE, Sharp, and Sony. |
| Electronic Projects -- A variety of free electronic projects that you can build. Quite a few circuits with theory of operation, and parts lists. Excellent reference site. |
| Electronics and Electrical Engineering Resource -- Electronics theory, books, contruction projects, tips, practical advice. Very good for the novice and the expert. |
| Electronics Circuit Analysis Puzzles. -- Use the exercises to practice the concepts of Basic Electronics. This is a fun way to master circuit analysis. An electronics tutorial. |
| 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: Circuit Search Engine -- Search engine and categorically organized circuits in a neat directory. More circuits are added everyday. |
| Electronics Lab -- Useful circuits with full description, diagrams and PCB, electronics articles, links and downloads. |
| Electronics World -- A large number of good and workable circuits. From alarms to test circuits. Free electronic circuit diagrams, schematics, tutorials, and hobbyists circuits. |
| Electronicsclub -- Design guidelines on some basic electronic building blocks in PDF format. |
| FC"s Electronic Circuits -- Circuits on solar power, micro power FM broadcasting, and a temperature controlled NICD charger. Some interesting circuits from Forrest Cook. And a few very good electronics links. |
| HeMan"s Electro Stuff -- The site has not been maintained for more than two years but there is a tremendous amount of information, wisdom and circuits. tubes, transistors, circuits, audio tube and transistor amps are covered. |
| Hobby Electronics -- From Japan. Several 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. |
| Interactive electronic circuits Analysis site -- Interactive electronic and electrical circuit analysis and tutorial site. |
| Julien Thomas Enterprises -- RS-232 protection and connections schemes. For protecting your Mother Board. |
| Links and Resources -- Hundreds of electronic links. |
| Music Electronics ľArchive -- A very large archive of various tube and transistor amplifiers and information, mostly for music applications. |
| Operational Amplifier Circuits -- Single and split power supply, inverting and non inverting operational amplifier theory. Ps |
| PC Mouse Info -- PC mouse hardware and how it works, interfacing information and technical reference. |
| PC related schematics -- Interface circuits, I2C, RS-232, IEEE-448, parallel port, programmers, LCD interwae, in short any hardware or software you may need to interface a PC to the outside world is here. |
| Sam Electronic Circuits -- Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English. |
| Schematic Symbol Reference -- A large reference of schematic symbols and brief explanations of each. |
| Schematics and Answers -- Schematics and circuits as well as a query where you can ask electronic related questions. |
| Sci.Electronics.Repair FAQ: -- Various schematics and diagrams. |
| 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 -- The site is for electronic specialists who repair TV sets. On the site you can find television schematics, scanned and saved with GIF, JPG or PDF extension. Some of the scans are of low quality, but you get the idea. |
| The Electronic Cookbook Archive -- Gateway to a FTP archive of circuits. |
| The Electronic Peasant -- Dedicated to inexpensive Do-It-Yourself music electronics, electronic salvage/recycling, and alternative energy projects. |
| 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. |
| Useful Circuits -- Hundreds of useful, simple circuits; easy to build and easy to undestand. |
| Wenzel Associates Technical Library -- Time, oscillation and frequency circuits, articles, and tutorials. |