Timer Tutorial - An extensive tutorial on 555 timer
(history, timing and logic diagrams, replacement guide).
Hobby Circuits - A collection of electronic circuits for the
hobbyist or student, links to related sites, commercial kits and
projects, newsgroups and educational areas.
Gadgets - A collection of electronics projects, circuits,
datasheets, and helpful articles from the authors of
"Electronics Projects For Dummies".
Low-Pass Filter - Design of a 5th order Butterworth LP
filter using Sallen-Key circuit design.
Cellar Archive - Nearly every issue is listed from 1988 to
2001, software code.
- A searchable database of schematics and electronic circuit
designs such as alarms, audio/video, auto, etc.
Archive - ASCII circuit diagrams, radio, audio and computer
related circuits; data sheets.
Today - Collection of circuits built around specific
components and functions
- A Wiki-based archive of electronic circuits for hobbyists.
Caption Decoder - A simple closed caption decoder for your
TV. Schematic, BOM, theory of operation.
- Electronic circuits, projects, schematics, and software for
Schematics - Schematic index: audio, RF, power, switching
and miscellaneous circuits.
Electronic Schematic Diagrams - Electronic circuit archive,
FAQ, freeware, resources directory.
Clock - Easy nixie clock with different microcontrollers.
Discover Circuits - A
collections of categorized and cross-referenced electronic
circuits or schematics.
Tech Electronic Projects - An electronic forum. Includes a
collection of small electronic circuits.
Circuit Diagrams - Schematics with descriptions and
do-it-yourself electronic projects for hobbyists.
Circuit Projects - A circuit archive with schematics,
descriptions and PCB layouts.
Projects - Electronics projects, schematics,PCB tips for
high school students, teachers, students, and hobbyists.
Circuits - An archive of electronic circuits divided into
categories such as power supplies, auto, computer circuits,
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 Directory
- A collection of electronic schematics and projects, index of
tutorials and design software.
Electronic Circuits for Beginners - Site with simple
circuits that are easy for beginners in electronics to build and
for the Hobbyist - Electronics projects, schematics, and
tutorials: high voltage, radio control, timers, oscillators, RF
transmitters, amplifiers and other.
Electronic Info and
Schematic Page - Technical references and schematics
archive: alarm, audio, auto, etc.
Peasant - Dedicated to inexpensive Do-It-Yourself music
electronics, electronic salvage/recycling, and alternative
Electrical Engineering Resource - Electronics theory, books,
construction projects, tips, and practical advice.
Circuit Forum - Electronic circuits and projects with
description, diagrams and PCB, electronics articles.
Electronics Circuit Search
Engine - A search engine for electronics circuits.
Electronics Guides and Projects
- Contains electronics projects and guides, including
Electronics Hobbyist - Projects for beginners, articles on
electronics and electrical science, Tesla coils, electrostatic
devices, and resource links for the hobbyist and educator.
Infoline - Search engine and categorically organized
circuits in a directory.
Electronics Lab -
Electronic circuits with full description, diagrams and PCB,
electronics articles, links and downloads.
Projects with Circuit Diagrams - A collection of electronics
projects and circuit diagrams. How to build your own electronic
Electronics Zone - Electronic circuits, kits,
do-it-yourself, circuit diagrams, design and electronics hobby
schematics from alarms to test circuits.
Electronic schematics, circuits, projects, tutorials and
software for hobbyists.
FC's Electronic Circuits
- Circuits on solar power, micro power FM broadcasting, a
temperature controlled NICD charger, and more from Forrest Cook;
Free Circuit Diagram
- Electronic circuit schematic diagrams collection.
Free Electronics Schematics
Diagrams - Electronics diagrams: pro music equipment,
vintage tube amplifiers and other; chat room.
Hobby Circuits - A large collection of simple electronic
circuits for hobbyists from Imagineering On-line Magazine.
Hobby Electronics -
From Japan. Several interesting circuits. Some interesting
theory and applications.
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
Projects - Electronic projects covering GPIB connectivity,
instrumentation, microcontrollers, Ham radio and wireless
communications with PCBs and key components.
Thomas Enterprises - RS-232 protection and connections
schemes. For protecting your Mother Board.
Electronics - Schematics with descriptions and
do-it-yourself electronic projects for hobbyists.
Electronics µArchive - An archive of tube and transistor
amplifiers and information, mostly for music applications.
PIC Based Analog Synth
- Project to build a real analog synthesizer using easy to get
Ronald´s Electronic Project
Site - Fully documented electronic projects, such as stand
alone microcontroller circuits and nixie, numitron and decatron
Rugby PIC Clock
- Schematic a construction of a 60kHz time code receiver and
clock. Includes PIC programmer and LED clock display.
Circuits - Electronic Circuits for the hobbyist, analog,
audio and digital, useful circuits with full Greek descriptions
, diagrams in Greek and English.
Schematic Collection - Includes information about safety,
power supplies, Jacobs Ladders, circuits, IR detectors, power
oscillators, and schematics.
Small TV Terminal - TV
terminal design. Connects TV and PC keyboard to a
microcontroller based device.
StarGate-TR - Projects
related to Electronics Engineering. Includes schematics, source
codes of embedded systems, such as microcontroller based
electrical motor driver or finite element analysis with free
Home Page - How to make a very nice and stable frequency
synthesizer from Harvard. Includes schematics, block diagrams
and parts lists. Very through design.
Tech Tut - A blog on
electronics projects, ideas, and tips on repairing broken
Techlib.com Electronics - Audio, PC, games, phone,
oscillator, power, test equipment, and weather related
schematics and information.
- Television schematics for electronic specialists who repair TV
Electronics Pages - Electronic circuits and projects
designed by Tomi Engdahl. Audio, video, computer, data
communication, light effects and controllers, power supplies,
and telephone circuits.
Stuff - Audio tubes, transistors, analog circuits,
transistor amplifiers as well as connector pinouts.
Your Electronics Open
Source - Electronic projects, firmware, circuit board,
reference designs, datasheet, application notes.