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Active Sites Directory is a free directory which covers a large variety of sites organized by category. Browse thousands of web sites that are more focused on one particular aspect of Science, Technology, Electronics, Reference, Circuit Archives with just the click of your mouse.

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Top: Science: Technology: Electronics: Reference: Circuit_Archives:

    http://ourworld.compuserve.com/homepages/Bill_Bowden/   » 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.

    http://buildinggadgets.com/   » Building Gadgets - 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   » 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.
    http://www.circuitdb.com/   » CircuitDB - A searchable database of schematics and electronic circuit designs such as alarms, audio/video, auto, etc.

    http://www.ee.washington.edu/circuit_archive/   » Circuits Archive - ASCII circuit diagrams, radio, audio and computer related circuits; data sheets.

    http://www.circuitsarchive.org/   » CircuitsArchive - A Wiki-based archive of electronic circuits for hobbyists.

    http://www.brouhaha.com/~eric/pic/caption.html   » Closed Caption Decoder - A simple closed caption decoder for your TV. Schematic, BOM, theory of operation.

    http://learnat.sait.ab.ca/ict/cmph200/   » Computer Circuits 200 A - A web-based course on designing and troubleshooting digital systems, primarily microcomputer based. Covers basic digital logic circuits.

    http://www.zen22142.zen.co.uk/schematics.htm   » CXI Schematics - Schematic index: audio, RF, power, switching and miscellaneous circuits.

    http://www.delabs-circuits.com/   » Delabs Electronic Schematic Diagrams - Electronic circuit archive, FAQ, freeware, resources directory.

    http://www.sweb.cz/elbastl/clock.htm   » Digital Clock - Easy nixie clock with different microcontrollers.

    http://discovercircuits.com/   » Discover Circuits - A collections of categorized and cross-referenced electronic circuits or schematics.

    http://www.edn.com/archive   » EDN Archives - Online magazine articles consist of information about circuits, software programs, listings and helpful tips.

    http://www.electro-tech-online.com/   » Electro Tech Electronic Projects - An electronic forum. Includes a collection of small electronic circuits.

    http://www.circuit-diagrams.com/   » Electronic Circuit Diagrams - Schematics with descriptions and do-it-yourself electronic projects for hobbyists.

    http://www.circuit-projects.com/   » Electronic Circuit Projects - A circuit archive with schematics, descriptions and PCB layouts.

    http://www.aaroncake.net/circuits/index.asp   » Electronic Circuits - An archive of electronic circuits divided into categories such as power supplies, auto, computer circuits, sound/radio.

    http://www.next.gr/   » Electronic Circuits Directory - A collection of electronic schematics and projects, index of tutorials and design software.

    http://www.uoguelph.ca/~antoon/   » Electronic Circuits for the Hobbyist - Electronics projects, schematics, and tutorials: high voltage, radio control, timers, oscillators, RF transmitters, amplifiers and other.

    http://www.elecdesign.com/Departments/DepartmentID/2/2.html   » Electronic Design- Ideas for Design - A circuit archive from Electronic Design magazine.

    http://electroschematics.com/   » Electronic Diy Schematics - Electronic schematics: audio amplifiers, radio transmitters, power supplies, oscillators and antennas.

    http://www.schematicsforfree.com/   » Electronic Info and Schematic Page - Technical references and schematics archive: alarm, audio, auto, etc.

    http://www.electronicpeasant.com/   » The Electronic Peasant - Dedicated to inexpensive Do-It-Yourself music electronics, electronic salvage/recycling, and alternative energy projects.

    http://fmtvguide.blogspot.com/   » Electronic Transmitter Guide - Information on AM, FM, and TV transmitters.

    http://www.electronics-ee.com   » Electronics and Electrical Engineering Resource - Electronics theory, books, construction projects, tips, and practical advice.

    http://www.twysted-pair.ca/   » Electronics Circuit Analysis Puzzles - Puzzles to master electronic circuit analysis; an electronics tutorial.

    http://www.electronics-circuits.net/   » Electronics Circuit Forum - Electronic circuits and projects with description, diagrams and PCB, electronics articles.

    http://circuitscout.com/   » Electronics Circuit Search Engine - A search engine for electronics circuits.

    http://www.eskimo.com/~billb/amateur/elehob.html   » Electronics Hobbyist - 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/   » Electronics Infoline - Search engine and categorically organized circuits in a directory.

    http://electronics-lab.com/   » Electronics Lab - Electronic circuits with full description, diagrams and PCB, electronics articles, links and downloads.

    http://www.diy-electronic-projects.com/   » Electronics Projects with Circuit Diagrams - A collection of electronics projects and circuit diagrams. How to build your own electronic gadgets.

    http://www.electronic-circuits-diagrams.com/   » Electronics Zone - Electronic circuits, kits, do-it-yourself, circuit diagrams, design and electronics hobby schematics from alarms to test circuits.

    http://www.solorb.com/elect/   » FC's Electronic Circuits - Circuits on solar power, micro power FM broadcasting, a temperature controlled NICD charger, and more from Forrest Cook; electronics links.

    http://www.schematics.ca   » Free Electronics Schematics Diagrams - Electronics diagrams: pro music equipment, vintage tube amplifiers and other; chat room.

    http://www.geindustrial.com/pm/notes/artsci/   » GE Power Management - The art and science of protective relaying. A complete online textbook.

    http://www.imagineeringezine.com/e-zine/hcircuits.html   » Hobby Circuits - A large collection of simple electronic circuits for hobbyists from Imagineering On-line Magazine.

    http://hobby_elec.piclist.com/   » Hobby Electronics - From Japan. Several interesting circuits. Some interesting theory and applications.

    http://www.nitehawk.com/rasmit/sa50.html   » 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.

    http://www.webalice.it/hotwater/   » Hotwater Electronics Projects - Electronic projects covering GPIB connectivity, instrumentation, microcontrollers, Ham radio and wireless communications with PCBs and key components.

    http://www.analyzethat.net/index.php   » Interactive Electronic Circuits Analysis - Interactive electronic and electrical circuit analysis and tutorial site.

    http://www.kielnet.net/home/julien.thomas/   » Julien Thomas Enterprises - RS-232 protection and connections schemes. For protecting your Mother Board.

    http://home.scarlet.be/kpm/   » 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

    http://www.learning-electronics.com/   » Learn Electronics - Schematics with descriptions and do-it-yourself electronic projects for hobbyists.

    http://audible.transient.net/archive/   » Music Electronics µArchive - An archive of tube and transistor amplifiers and information, mostly for music applications.

    http://www.avtechpulse.com/papers/   » Publications - Some publications from Avtech, subjects range from VCR monostables to HV stepped recovery diodes.

    http://www.dos4ever.com/   » Ronald´s Electronic Project Site - Fully documented electronic projects, such as stand alone microcontroller circuits and nixie, numitron and decatron clocks.

    http://www.burningimage.net/clock/   » Rugby PIC Clock - Schematic a construction of a 60kHz time code receiver and clock. Includes PIC programmer and LED clock display.

    http://users.otenet.gr/~athsam   » Sam Electronic Circuits - Electronic Circuits for the hobbyist, analog, audio and digital, useful circuits with full Greek descriptions , diagrams in Greek and English.

    http://repairfaq.ece.drexel.edu/sam/samschem.htm   » Sam's Schematic Collection - Includes information about safety, power supplies, Jacobs Ladders, circuits, IR detectors, power oscillators, and schematics.

    http://www.sweb.cz/tvterminal/   » Small TV Terminal - TV terminal design. Connects TV and PC keyboard to a microcontroller based device.

    http://seti.harvard.edu/synth/index.html   » 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.

    http://www.techlib.com/electronics/index.html   » Techlib.com Electronics - Audio, PC, games, phone, oscillator, power, test equipment, and weather related schematics and information.

    http://schematy.tripod.com/   » Television Schematics - Television schematics for electronic specialists who repair TV sets.

    http://www.geocities.com/tjacodesign/index.html   » Tjaco's design graveyard - Various electronic schematics including audio, switches, valve amplifiers, and high voltage/power applications.

    http://www.epanorama.net/circuits/   » 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.

    http://tonieletronica.50webs.com/en/   » Tonieletronica Circuits - Schematics, PCBs and descritpion of amplifiers, FM transmitter, power sources, battery charger, and other circuits.

    http://www.irational.org/sic/radio/40w-no-tune-amp.html   » 40W No Tune FM Broadcast - Power Amplifier Design.

    http://margo.student.utwente.nl/el/   » WeMan's Electro Stuff - Audio tubes, transistors, analog circuits, transistor amplifiers as well as connector pinouts.

    http://www.wenzel.com/documents/library.html   » Wenzel Associates Technical Library - Time, oscillation and frequency circuits, articles, and tutorials.

    http://dev.emcelettronica.com/   » Your Electronics Open Source - Electronic projects, firmware, circuit board, reference designs, datasheet, application notes.

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