Web Directory

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

» 555 Timer Tutorial
   An extensive tutorial on 555 timer (history, timing and logic diagrams, replacement guide).
   http://www.sentex.ca/~mec1995/gadgets/555/555.html

» 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://www.bowdenshobbycircuits.info/

» Building Gadgets
   A collection of electronics projects, circuits, datasheets, and helpful articles from the authors of "Electronics Projects For Dummies".
   http://buildinggadgets.com/

» Butterworth Low-Pass Filter
   Design of a 5th order Butterworth LP filter using Sallen-Key circuit design.
   http://www.ece.uic.edu/~jmorisak/blpf.html

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

» Circuit Cellar Archive
   Nearly every issue is listed from 1988 to 2001, software code.
   ftp://ftp.circellar.com/pub/Circuit_Cellar/

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

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

» Circuits Today
   Collection of circuits built around specific components and functions
   http://www.circuitstoday.com/

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

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

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

» CoolCircuit
   Electronic circuits, projects, schematics, and software for hobbyists.
   http://www.coolcircuit.com/

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

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

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

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

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

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

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

» Electronic Circuit Schematics
   Free collection of electronic circuits diagrams, schematics and hobby projects. Includes amplifiers, battery chargers, power supplies and other.
   http://free-circuit.com/

» Electronic Circuits
   Electronic circuit diagrams, software, tutorial, schematics, projects, and tools.
   http://www.electronicecircuits.com/

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

» Electronic Circuits and Microcontroller Projects
   A collection of electronics circuits, microcontroller projects, and tutorials for hobbyists.
   http://www.circuitlake.com/

» Electronic Circuits for Beginners
   Site with simple circuits that are easy for beginners in electronics to build and understand
   http://electroniccircuitsforbeginners.blogspot.com/

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

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

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

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

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

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

» Electronics Guides and Projects
   Contains electronics projects and guides, including microcontroller programming.
   http://www.enmcu.com/

» 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.eskimo.com/~billb/amateur/elehob.html

» Electronics Infoline
   Search engine and categorically organized circuits in a directory.
   http://www.electronicsinfoline.com/

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

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

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

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

» Electroniq.net
   Electronic schematics, circuits, projects, tutorials and software for hobbyists.
   http://www.electroniq.net/

» 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.solorb.com/elect/

» Free Circuit Diagram
   Electronic circuit schematic diagrams collection.
   http://freecircuitdiagram.com/

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

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

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

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

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

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

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

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

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

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

» PIC Based Analog Synth
   Project to build a real analog synthesizer using easy to get components.
   http://picsynth.000space.com/

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

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

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

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

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

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

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

» Tech Tut
   A blog on electronics projects, ideas, and tips on repairing broken electronics.
   http://www.tech-tut.com/

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

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

» The Broadcast Hardware
   Broadcast Hardware Technical Resources
   http://broadcasthardware.blogspot.com/

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

» 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://www.epanorama.net/circuits/

» Tromop Info
   Information on B-7971 smartsockets, nixie tubes, nixie tube clocks, and other electronics.
   http://www.tromop.eu/cms/

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

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

» WhatCircuits.com
   Electronic circuits and electronic projects: audio, automotive, power and other.
   http://www.whatcircuits.com/

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