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
Thursday, January 23, 2020
Infa-Red Remote Control10
Black Light9
Yesterday
Wednesday, January 22, 2020
Colour (Sound) Organ72
7 Segment LED Counter72
Of All Time 12VDC To 120VAC Inverter1,456,120
FM Transmitter962,132

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 203,919 61 *
Car Alarm Arming Horn Beep Canceller bob 115,005 6 *
Wireless Auto Tachometer 316,205 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 142,536 29 *
Parallel (Printer) Port Interface 256,105 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 413,331 63 *
3 Channel Spectrum Analyzer 198,798 20
40W Fluorescent Lamp Inverter Bart Milnes 305,681 60 *
Adjustable Strobe Light 280,523 36
Black Light 244,298 29
Colour (Sound) Organ 263,169 36
Electronic Dice NEW! 165,227 10 *
Fantastic Atom Expander 177,531 25
Flash Slave Trigger 195,621 18 *
Infa-Red Remote Control 603,122 216 *
IR Remote Extender NEW! 106,623 2 *
IR Remote Jammer Carl 238,832 110 *
IR Remote Switch NEW! 135,702 9 *
LASER Transmitter/Receiver 381,506 92
LED Chaser 421,481 83 *
LED Metronome NEW! 87,344 3 *
LED Thermometer 187,896 22 *
Light/Dark Detector 285,963 90 *
Simple Colour Organ 120,742 10 *
Strobe Light 254,464 27 *
TRIAC Light Dimmer 475,493 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 329,504 122 *
Electromagnetic Levitator NEW! 124,931 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 886,422 214 *
AC Motor Speed Controller 360,088 29 *
Air Flow Detector 231,896 54 *
Digital Keypad Combination Lock 177,614 20
Low Voltage Alarm 206,261 58 *
Pine Racecar Victory Judge 86,725 1 *
Pulse Width Modulation DC Motor Control 624,384 94
Rain Detector 285,224 112 *
Simple Lie Detector 536,811 323
Simple Polarity Tester Dudley LeRoux 142,115 13 *
Simple Servo Controller 200,448 22 *
Simple Touch Switch NEW! 150,480 5 *
Simple Two Speed Contactor DC Motor Controller 185,613 21 *
Stepper Motor Controller 712,006 120 *
Time Delay Relay 531,132 88
Time Delay Relay II jawaharlal@excite.com 220,342 39 *
Touch Switch 268,703 51 *
Video Activated Relay 104,430 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 159,410 10 *
Water Detector With Sump/Bilge Pump Controller 130,472 18 *
Wire Loop Alarm Alex Meaden 187,370 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 288,536 25 *
12VDC To 120VAC Inverter 1,456,120 689
6V to 12V Converter 483,104 121
Automatic 12V Lead Acid Battery Charger 899,731 247
Automatic Load Sensing Power Switch 145,101 16 *
Car Battery Charger 851,047 159 *
Dual Polarity Power Supply 351,767 84 *
Fixed Voltage Power Supply 288,897 52 *
High Current Power Supply 311,095 65 *
High Voltage High Current Power Supply 232,099 35 *
LASER Power Supply 271,406 28
Portable CD Player Adapter For Car 190,509 12 *
Power Supply 709,156 259 *
Solid State Tesla Coil NEW! 127,942 4
Solid State Tesla Coil/High Voltage Generator 410,462 50
Transformerless Power Supply 438,360 117 *
Voltage Inverter 313,907 51 *
Voltage Inverter II 181,900 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 560,218 182
3 Watt FM Transmitter Rae XL Tkacik 308,789 82 *
50 Watt Amplifier 481,235 74
8 Note Tune Player 123,525 12 *
8 Watt Audio Amp 345,764 67 *
Aircraft Radio Communications Receiver 252,157 49 *
Crystal Radio 145,608 53 *
Digital Volume Control 310,051 47 *
Electronic Stethoscope 287,883 141 *
FET Audio Mixer 318,452 41
FM Transmitter 962,132 419
Guitar Fuzz Effect 222,137 52 *
Microphone Mixer Anatoly I. Shikhatov 228,898 26 *
Mono To Stereo Synthesizer oRbEq 111,878 18 *
One Tube Regenerative Radio NEW! 116,840 4 *
Op Amp Radio 358,665 80 *
Single Chip AM Radio NEW! 86,655 2 *
Single Chip FM Radio NEW! 149,022 1 *
Sound Level Meter 319,363 51 *
Stereo Tube Amplifier Weslee Kinsler 246,612 15 *
Tone Control 284,071 31
Transistor Organ 176,252 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 145,826 27 *
FM Telephone Bug 217,601 57
Phone Busy Indicator 196,442 24 *
Remote Telephone Ringer 101,003 3 *
Ringing Phone Light Flasher 193,464 35 *
Simple Phone Tap Derek Tombrello 345,476 98 *
Telephone Hold Button 110,820 10
Telephone Recorder 195,539 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.