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, June 24, 2021
FM Transmitter128
12VDC To 120VAC Inverter27
Yesterday
Wednesday, June 23, 2021
12VDC To 120VAC Inverter50
Stepper Motor Controller37
Of All Time 12VDC To 120VAC Inverter1,488,273
FM Transmitter980,244

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 217,336 61 *
Car Alarm Arming Horn Beep Canceller bob 128,116 6 *
Wireless Auto Tachometer 331,317 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 151,868 29 *
Parallel (Printer) Port Interface 272,470 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 433,894 63 *
3 Channel Spectrum Analyzer 210,174 20
40W Fluorescent Lamp Inverter Bart Milnes 319,735 60 *
Adjustable Strobe Light 296,484 36
Black Light 262,707 29
Colour (Sound) Organ 278,476 36
Electronic Dice NEW! 178,992 10 *
Fantastic Atom Expander 192,694 25
Flash Slave Trigger 209,716 18 *
Infa-Red Remote Control 621,140 216 *
IR Remote Extender NEW! 121,740 2 *
IR Remote Jammer Carl 251,834 110 *
IR Remote Switch NEW! 149,018 9 *
LASER Transmitter/Receiver 399,115 92
LED Chaser 432,909 83 *
LED Metronome NEW! 92,291 3 *
LED Thermometer 198,066 22 *
Light/Dark Detector 296,833 90 *
Simple Colour Organ 129,707 10 *
Strobe Light 264,739 27 *
TRIAC Light Dimmer 538,821 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 348,349 122 *
Electromagnetic Levitator NEW! 135,034 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 906,755 214 *
AC Motor Speed Controller 373,944 29 *
Air Flow Detector 242,400 54 *
Digital Keypad Combination Lock 187,694 20
Low Voltage Alarm 217,882 58 *
Pine Racecar Victory Judge 95,440 1 *
Pulse Width Modulation DC Motor Control 636,435 94
Rain Detector 295,031 112 *
Simple Lie Detector 548,844 323
Simple Polarity Tester Dudley LeRoux 155,889 13 *
Simple Servo Controller 211,001 22 *
Simple Touch Switch NEW! 160,217 5 *
Simple Two Speed Contactor DC Motor Controller 195,488 21 *
Stepper Motor Controller 728,212 120 *
Time Delay Relay 544,513 88
Time Delay Relay II jawaharlal@excite.com 234,416 39 *
Touch Switch 279,621 51 *
Video Activated Relay 113,507 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 170,162 10 *
Water Detector With Sump/Bilge Pump Controller 143,317 18 *
Wire Loop Alarm Alex Meaden 196,911 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 301,262 25 *
12VDC To 120VAC Inverter 1,488,273 689
6V to 12V Converter 510,795 121
Automatic 12V Lead Acid Battery Charger 918,027 248
Automatic Load Sensing Power Switch 156,799 16 *
Car Battery Charger 867,500 159 *
Dual Polarity Power Supply 359,544 84 *
Fixed Voltage Power Supply 299,639 52 *
High Current Power Supply 324,561 66 *
High Voltage High Current Power Supply 242,638 35 *
LASER Power Supply 283,583 28
Portable CD Player Adapter For Car 201,783 12 *
Power Supply 723,834 259 *
Solid State Tesla Coil NEW! 135,285 4
Solid State Tesla Coil/High Voltage Generator 427,508 50
Transformerless Power Supply 451,037 117 *
Voltage Inverter 323,915 51 *
Voltage Inverter II 191,609 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 573,174 182
3 Watt FM Transmitter Rae XL Tkacik 321,418 83 *
50 Watt Amplifier 494,605 74
8 Note Tune Player 132,707 12 *
8 Watt Audio Amp 359,129 67 *
Aircraft Radio Communications Receiver 264,598 49 *
Crystal Radio 151,127 53 *
Digital Volume Control 321,412 47 *
Electronic Stethoscope 301,722 142 *
FET Audio Mixer 331,225 41
FM Transmitter 980,244 420
Guitar Fuzz Effect 234,180 54 *
Microphone Mixer Anatoly I. Shikhatov 239,906 26 *
Mono To Stereo Synthesizer oRbEq 122,969 18 *
One Tube Regenerative Radio NEW! 124,827 4 *
Op Amp Radio 372,930 80 *
Single Chip AM Radio NEW! 91,790 2 *
Single Chip FM Radio NEW! 160,664 1 *
Sound Level Meter 330,274 51 *
Stereo Tube Amplifier Weslee Kinsler 257,418 15 *
Tone Control 296,989 31
Transistor Organ 188,126 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 155,275 27 *
FM Telephone Bug 227,428 57
Phone Busy Indicator 205,338 24 *
Remote Telephone Ringer 110,589 3 *
Ringing Phone Light Flasher 204,898 35 *
Simple Phone Tap Derek Tombrello 374,615 98 *
Telephone Hold Button 120,438 10
Telephone Recorder 207,558 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.