Home > Science > Technology > Electronics > Reference > Circuit Archives
http://www.bowdenshobbycircuits.info/
A collection of electronic circuits for the hobbyist or student, links to related sites, commercial kits and projects, newsgroups and educational areas.
http://buildinggadgets.com/
A collection of electronics projects, circuits, datasheets, and helpful articles from the authors of "Electronics Projects For Dummies".
http://www.ece.uic.edu/~jmorisak/blpf.html
Design of a 5th order Butterworth LP filter using Sallen-Key circuit design.
ftp://ftp.circellar.com/pub/Circuit_Cellar/
Nearly every issue is listed from 1988 to 2001, software code.
http://www.circuitdb.com/
A searchable database of schematics and electronic circuit designs such as alarms, audio/video, auto, etc.
http://www.circuitstoday.com/
Collection of circuits built around specific components and functions
http://www.circuitsarchive.org/
A Wiki-based archive of electronic circuits for hobbyists.
http://www.brouhaha.com/~eric/pic/caption.html
A simple closed caption decoder for your TV. Schematic, BOM, theory of operation.
http://www.zen22142.zen.co.uk/schematics.htm
Schematic index: audio, RF, power, switching and miscellaneous circuits.
http://www.delabs-circuits.com/
Electronic circuit archive, FAQ, freeware, resources directory.
http://elbastl.sweb.cz/clock.htm
Easy nixie clock with different microcontrollers.
http://discovercircuits.com/
A collections of categorized and cross-referenced electronic circuits or schematics.
http://www.electro-tech-online.com/
An electronic forum. Includes a collection of small electronic circuits.
http://www.circuit-diagrams.com/
Schematics with descriptions and do-it-yourself electronic projects for hobbyists.
http://www.aaroncake.net/circuits/index.asp
An archive of electronic circuits divided into categories such as power supplies, auto, computer circuits, sound/radio.
http://www.electronicecircuits.com/
Electronic circuit diagrams, software, tutorial, schematics, projects, and tools.
http://www.circuitlake.com/
A collection of electronics circuits, microcontroller projects, and tutorials for hobbyists.
http://www.next.gr/
A collection of electronic schematics and projects, index of tutorials and design software.
http://electroniccircuitsforbeginners.blogspot.com/
Site with simple circuits that are easy for beginners in electronics to build and understand
http://www.schematicsforfree.com/
Technical references and schematics archive: alarm, audio, auto, etc.
http://www.electronics-ee.com/
Electronics theory, books, construction projects, tips, and practical advice.
http://circuitscout.com/
A search engine for electronics circuits.
http://www.enmcu.com/
Contains electronics projects and guides, including microcontroller programming.
http://www.eskimo.com/~billb/amateur/elehob.html
Projects for beginners, articles on electronics and electrical science, Tesla coils, electrostatic devices, and resource links for the hobbyist and educator.
http://www.electronicsinfoline.com/
Search engine and categorically organized circuits in a directory.
http://electronics-lab.com/
Electronic circuits with full description, diagrams and PCB, electronics articles, links and downloads.
http://www.diy-electronic-projects.com/
A collection of electronics projects and circuit diagrams. How to build your own electronic gadgets.
http://www.electronic-circuits-diagrams.com/
Electronic circuits, kits, do-it-yourself, circuit diagrams, design and electronics hobby schematics from alarms to test circuits.
http://www.electroniq.net/
Electronic schematics, circuits, projects, tutorials and software for hobbyists.
http://www.solorb.com/elect/
Circuits on solar power, micro power FM broadcasting, a temperature controlled NICD charger, and more from Forrest Cook; electronics links.
http://freecircuitdiagram.com/
Electronic circuit schematic diagrams collection.
http://www.schematics.ca/
Electronics diagrams: pro music equipment, vintage tube amplifiers and other; chat room.
http://www.imagineeringezine.com/e-zine/hcircuits.html
A large collection of simple electronic circuits for hobbyists from Imagineering On-line Magazine.
http://www.nitehawk.com/rasmit/sa50.html
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.
http://www.webalice.it/hotwater/
Electronic projects covering GPIB connectivity, instrumentation, microcontrollers, Ham radio and wireless communications with PCBs and key components.
http://www.kielnet.net/home/julien.thomas/
RS-232 protection and connections schemes. For protecting your Mother Board.
http://www.learning-electronics.com/
Schematics with descriptions and do-it-yourself electronic projects for hobbyists.
http://audible.transient.net/archive/
An archive of tube and transistor amplifiers and information, mostly for music applications.
http://picsynth.000space.com/
Project to build a real analog synthesizer using easy to get components.
http://www.dos4ever.com/
Fully documented electronic projects, such as stand alone microcontroller circuits and nixie, numitron and decatron clocks.
http://www.burningimage.net/clock/
Schematic a construction of a 60kHz time code receiver and clock. Includes PIC programmer and LED clock display.
http://users.otenet.gr/~athsam/
Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English.
http://www.repairfaq.org/sam/samschem.htm
Includes information about safety, power supplies, Jacobs Ladders, circuits, IR detectors, power oscillators, and schematics.
http://tvterminal.sweb.cz/
TV terminal design. Connects TV and PC keyboard to a microcontroller based device.
http://seti.harvard.edu/synth/index.html
How to make a very nice and stable frequency synthesizer from Harvard. Includes schematics, block diagrams and parts lists. Very through design.
http://www.tech-tut.com/
A blog on electronics projects, ideas, and tips on repairing broken electronics.
http://www.techlib.com/electronics/index.html
Audio, PC, games, phone, oscillator, power, test equipment, and weather related schematics and information.
http://schematy.tripod.com/
Television schematics for electronic specialists who repair TV sets.
http://www.electronicpeasant.com/
Dedicated to inexpensive Do-It-Yourself music electronics, electronic salvage/recycling, and alternative energy projects.
http://www.epanorama.net/circuits/
Electronic circuits and projects designed by Tomi Engdahl. Audio, video, computer, data communication, light effects and controllers, power supplies, and telephone circuits.
http://margo.student.utwente.nl/el/
Audio tubes, transistors, analog circuits, transistor amplifiers as well as connector pinouts.
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