Sam Electronic Circuits - Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English. Music Electronics µArchive - An archive of tube and transistor amplifiers and information, mostly for music applications. Electronics Hobbyist - Projects for beginners, articles on electronics and electrical science, Tesla coils, electrostatic devices, and resource links for the hobbyist and educator. FC's Electronic Circuits - Circuits on solar power, micro power FM broadcasting, a temperature controlled NICD charger, and more from Forrest Cook; electronics links. Electronic Circuits - An archive of electronic circuits divided into categories such as power supplies, auto, computer circuits, sound/radio. Techlib.com Electronics - Audio, PC, games, phone, oscillator, power, test equipment, and weather related schematics and information. Discover Circuits - A collections of categorized and cross-referenced electronic circuits or schematics. 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. Electronics Zone - Electronic circuits, kits, do-it-yourself, circuit diagrams, design and electronics hobby schematics from alarms to test circuits. WeMan's Electro Stuff - Audio tubes, transistors, analog circuits, transistor amplifiers as well as connector pinouts. Closed Caption Decoder - A simple closed caption decoder for your TV. Schematic, BOM, theory of operation. Circuit Cellar Archive - Nearly every issue is listed from 1988 to 2001, software code. Home Brew Spectrum Analyzer - How to make a spectrum analyzer with tips and advice on component selection and architecture. A large number of circuit ideas and schematics, with sources and construction tips. Hobby Circuits - A large collection of simple electronic circuits for hobbyists from Imagineering On-line Magazine. Electronics and Electrical Engineering Resource - Electronics theory, books, construction projects, tips, and practical advice. Julien Thomas Enterprises - RS-232 protection and connections schemes. For protecting your Mother Board. Electronics Lab - Electronic circuits with full description, diagrams and PCB, electronics articles, links and downloads. The Electronic Peasant - Dedicated to inexpensive Do-It-Yourself music electronics, electronic salvage/recycling, and alternative energy projects. Electronics Infoline - Search engine and categorically organized circuits in a directory. Butterworth Low-Pass Filter - Design of a 5th order Butterworth LP filter using Sallen-Key circuit design. Electronic Circuit Diagrams - Schematics with descriptions and do-it-yourself electronic projects for hobbyists. Delabs Electronic Schematic Diagrams - Electronic circuit archive, FAQ, freeware, resources directory. 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. Electronic Circuits Directory - A collection of electronic schematics and projects, index of tutorials and design software. Free Electronics Schematics Diagrams - Electronics diagrams: pro music equipment, vintage tube amplifiers and other; chat room. CircuitDB - A searchable database of schematics and electronic circuit designs such as alarms, audio/video, auto, etc. CXI Schematics - Schematic index: audio, RF, power, switching and miscellaneous circuits. Electronic Info and Schematic Page - Technical references and schematics archive: alarm, audio, auto, etc. Electro Tech Electronic Projects - An electronic forum. Includes a collection of small electronic circuits. Building Gadgets - A collection of electronics projects, circuits, datasheets, and helpful articles from the authors of "Electronics Projects For Dummies". Television Schematics - Television schematics for electronic specialists who repair TV sets. Electronics Circuit Search Engine - A search engine for electronics circuits. Rugby PIC Clock - Schematic a construction of a 60kHz time code receiver and clock. Includes PIC programmer and LED clock display. Electronics Projects with Circuit Diagrams - A collection of electronics projects and circuit diagrams. How to build your own electronic gadgets. Ronald´s Electronic Project Site - Fully documented electronic projects, such as stand alone microcontroller circuits and nixie, numitron and decatron clocks. CircuitsArchive - A Wiki-based archive of electronic circuits for hobbyists. Learn Electronics - Schematics with descriptions and do-it-yourself electronic projects for hobbyists. Hotwater Electronics Projects - Electronic projects covering GPIB connectivity, instrumentation, microcontrollers, Ham radio and wireless communications with PCBs and key components. Free Circuit Diagram - Electronic circuit schematic diagrams collection. PIC Based Analog Synth - Project to build a real analog synthesizer using easy to get components. Electroniq.net - Electronic schematics, circuits, projects, tutorials and software for hobbyists. 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. Electronics Guides and Projects - Contains electronics projects and guides, including microcontroller programming. Electronic Circuits - Electronic circuit diagrams, software, tutorial, schematics, projects, and tools. Electronic Circuits and Microcontroller Projects - A collection of electronics circuits, microcontroller projects, and tutorials for hobbyists. Electronic Circuits for Beginners - Site with simple circuits that are easy for beginners in electronics to build and understand Circuits Today - Collection of circuits built around specific components and functions Tech Tut - A blog on electronics projects, ideas, and tips on repairing broken electronics. Digital Clock - Easy nixie clock with different microcontrollers. Small TV Terminal - TV terminal design. Connects TV and PC keyboard to a microcontroller based device. Sam's Schematic Collection - Includes information about safety, power supplies, Jacobs Ladders, circuits, IR detectors, power oscillators, and schematics.