Electronic Circuits


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Here are some neat circuits you might want to try. The schematics and printed circuit board patterns are GIF's, and may show up different on some browsers. You might want to save the images (especially the PC board patterns) to your hard drive, load them into a photo editor (Photoshop, Paint Shop Pro, The GIMP, etc.) and adjust the size before you transfer the pattern to a board. Printed circuit board patterns are available possible. This page is always under construction and there will be new additions from time to time. Some of these circuits were designed by me, most are not. Whenever possible I have tried to credit the author of a circuit but since many of these circuits are from my personal collection that I have gathered over a period of many years, this information is not always available.

You can rank circuits according to how much you like a circuit by clicking on the lightning bolt icons. These ranks can be based on how much you like a circuit, whether a circuit worked or didn't work for you, or how useful you found a circuit. Additionally you can add your own comments at the bottom of each circuit by filling out the form.

Circuit Catagories

Circuits are divided into categories as listed below.

Catagory Circuits
Auto 3
Computer 2
Light/Laser 21
Major Projects 2
Other 21
Power Supply 18
Sound/Radio 22
Telephone 8

Some circuits in this list have little astrisk (*) markers beside them which give a basic amount of information regarding whether the circuit has been designed, tested or modified by the webmaster.

Marker Description
* The circuit has not been tested by me. Therefore, I will offer no gaurantee that they will work.
* This circuit has been designed by me.
* This circuit was not designed by me, but was modified by me.

Most Popular Circuits

The most popular circuits of today, yesterday and all time can be found below.

When Circuit Views
Today
Monday, March 01, 2021
7 Segment LED Counter87
50 Watt Amplifier43
Yesterday
Sunday, February 28, 2021
12VDC To 120VAC Inverter60
12VDC Fluorescent Lamp Driver59
Of All Time 12VDC To 120VAC Inverter1,481,282
FM Transmitter976,575

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 214,686 61 *
Car Alarm Arming Horn Beep Canceller bob 125,640 6 *
Wireless Auto Tachometer 328,452 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 150,019 29 *
Parallel (Printer) Port Interface 269,198 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 429,902 63 *
3 Channel Spectrum Analyzer 207,898 20
40W Fluorescent Lamp Inverter Bart Milnes 316,997 60 *
Adjustable Strobe Light 293,351 36
Black Light 258,964 29
Colour (Sound) Organ 275,588 36
Electronic Dice NEW! 176,281 10 *
Fantastic Atom Expander 189,779 25
Flash Slave Trigger 207,082 18 *
Infa-Red Remote Control 618,072 216 *
IR Remote Extender NEW! 118,906 2 *
IR Remote Jammer Carl 249,464 110 *
IR Remote Switch NEW! 146,513 9 *
LASER Transmitter/Receiver 395,422 92
LED Chaser 430,715 83 *
LED Metronome NEW! 91,372 3 *
LED Thermometer 196,160 22 *
Light/Dark Detector 294,827 90 *
Simple Colour Organ 128,030 10 *
Strobe Light 262,764 27 *
TRIAC Light Dimmer 536,652 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 345,542 122 *
Electromagnetic Levitator NEW! 133,159 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 902,812 214 *
AC Motor Speed Controller 371,175 29 *
Air Flow Detector 240,441 54 *
Digital Keypad Combination Lock 185,715 20
Low Voltage Alarm 215,574 58 *
Pine Racecar Victory Judge 93,796 1 *
Pulse Width Modulation DC Motor Control 634,127 94
Rain Detector 293,158 112 *
Simple Lie Detector 546,599 323
Simple Polarity Tester Dudley LeRoux 153,307 13 *
Simple Servo Controller 208,856 22 *
Simple Touch Switch NEW! 158,369 5 *
Simple Two Speed Contactor DC Motor Controller 193,624 21 *
Stepper Motor Controller 725,101 120 *
Time Delay Relay 542,316 88
Time Delay Relay II jawaharlal@excite.com 231,675 39 *
Touch Switch 277,629 51 *
Video Activated Relay 111,736 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 168,123 10 *
Water Detector With Sump/Bilge Pump Controller 141,078 18 *
Wire Loop Alarm Alex Meaden 195,088 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 298,889 25 *
12VDC To 120VAC Inverter 1,481,282 689
6V to 12V Converter 507,820 121
Automatic 12V Lead Acid Battery Charger 914,728 248
Automatic Load Sensing Power Switch 154,417 16 *
Car Battery Charger 864,857 159 *
Dual Polarity Power Supply 357,937 84 *
Fixed Voltage Power Supply 297,536 52 *
High Current Power Supply 322,176 66 *
High Voltage High Current Power Supply 240,666 35 *
LASER Power Supply 281,036 28
Portable CD Player Adapter For Car 199,516 12 *
Power Supply 720,805 259 *
Solid State Tesla Coil NEW! 133,854 4
Solid State Tesla Coil/High Voltage Generator 424,013 50
Transformerless Power Supply 448,662 117 *
Voltage Inverter 321,545 51 *
Voltage Inverter II 189,693 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 570,848 182
3 Watt FM Transmitter Rae XL Tkacik 319,044 83 *
50 Watt Amplifier 492,226 74
8 Note Tune Player 130,942 12 *
8 Watt Audio Amp 356,644 67 *
Aircraft Radio Communications Receiver 262,263 49 *
Crystal Radio 150,235 53 *
Digital Volume Control 319,177 47 *
Electronic Stethoscope 298,951 142 *
FET Audio Mixer 328,677 41
FM Transmitter 976,575 420
Guitar Fuzz Effect 231,739 52 *
Microphone Mixer Anatoly I. Shikhatov 237,776 26 *
Mono To Stereo Synthesizer oRbEq 120,706 18 *
One Tube Regenerative Radio NEW! 123,189 4 *
Op Amp Radio 370,288 80 *
Single Chip AM Radio NEW! 90,745 2 *
Single Chip FM Radio NEW! 158,317 1 *
Sound Level Meter 328,155 51 *
Stereo Tube Amplifier Weslee Kinsler 255,285 15 *
Tone Control 294,418 31
Transistor Organ 185,857 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 153,512 27 *
FM Telephone Bug 225,738 57
Phone Busy Indicator 203,666 24 *
Remote Telephone Ringer 108,817 3 *
Ringing Phone Light Flasher 202,717 35 *
Simple Phone Tap Derek Tombrello 372,781 98 *
Telephone Hold Button 118,499 10
Telephone Recorder 205,607 54 *


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All material marked as mine is property of Aaron Cake. You may, however, distribute it as much as you want, with or without credit to me. Just don't claim credit for it yourself, and it would be nice if you included a link back to my page. All other material is property of its authors.