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
Saturday, November 26, 2022
12VDC To 120VAC Inverter17
Car Battery Charger14
Yesterday
Friday, November 25, 2022
12VDC To 120VAC Inverter42
Stepper Motor Controller33
Of All Time 12VDC To 120VAC Inverter1,508,177
FM Transmitter996,369

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 223,260 61 *
Car Alarm Arming Horn Beep Canceller bob 133,196 6 *
Wireless Auto Tachometer 338,453 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 156,763 29 *
Parallel (Printer) Port Interface 280,336 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 442,240 63 *
3 Channel Spectrum Analyzer 216,837 20
40W Fluorescent Lamp Inverter Bart Milnes 325,992 60 *
Adjustable Strobe Light 303,958 36
Black Light 273,119 29
Colour (Sound) Organ 285,531 36
Electronic Dice NEW! 184,890 10 *
Fantastic Atom Expander 199,444 25
Flash Slave Trigger 216,450 18 *
Infa-Red Remote Control 629,029 216 *
IR Remote Extender NEW! 128,129 2 *
IR Remote Jammer Carl 260,671 110 *
IR Remote Switch NEW! 154,052 9 *
LASER Transmitter/Receiver 408,804 92
LED Chaser 440,161 83 *
LED Metronome NEW! 96,315 3 *
LED Thermometer 203,252 22 *
Light/Dark Detector 302,570 90 *
Simple Colour Organ 134,397 11 *
Strobe Light 271,569 27 *
TRIAC Light Dimmer 546,037 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 354,833 122 *
Electromagnetic Levitator NEW! 140,543 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 916,022 214 *
AC Motor Speed Controller 383,375 29 *
Air Flow Detector 247,993 54 *
Digital Keypad Combination Lock 193,202 20
Low Voltage Alarm 225,492 58 *
Pine Racecar Victory Judge 99,973 1 *
Pulse Width Modulation DC Motor Control 643,524 94
Rain Detector 300,870 112 *
Simple Lie Detector 555,904 323
Simple Polarity Tester Dudley LeRoux 161,590 13 *
Simple Servo Controller 217,382 22 *
Simple Touch Switch NEW! 165,944 5 *
Simple Two Speed Contactor DC Motor Controller 201,123 21 *
Stepper Motor Controller 738,613 120 *
Time Delay Relay 550,896 88
Time Delay Relay II jawaharlal@excite.com 241,695 39 *
Touch Switch 285,605 51 *
Video Activated Relay 118,476 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 176,240 10 *
Water Detector With Sump/Bilge Pump Controller 149,257 18 *
Wire Loop Alarm Alex Meaden 202,298 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 308,531 25 *
12VDC To 120VAC Inverter 1,508,177 691
6V to 12V Converter 520,531 121
Automatic 12V Lead Acid Battery Charger 929,834 248
Automatic Load Sensing Power Switch 163,297 16 *
Car Battery Charger 876,540 159 *
Dual Polarity Power Supply 366,317 84 *
Fixed Voltage Power Supply 306,533 52 *
High Current Power Supply 332,306 66 *
High Voltage High Current Power Supply 248,523 35 *
LASER Power Supply 290,893 28
Portable CD Player Adapter For Car 208,246 12 *
Power Supply 731,781 259 *
Solid State Tesla Coil NEW! 141,425 4
Solid State Tesla Coil/High Voltage Generator 437,275 51
Transformerless Power Supply 458,194 117 *
Voltage Inverter 332,621 51 *
Voltage Inverter II 197,796 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 580,361 182
3 Watt FM Transmitter Rae XL Tkacik 328,931 83 *
50 Watt Amplifier 501,980 74
8 Note Tune Player 137,490 12 *
8 Watt Audio Amp 366,787 67 *
Aircraft Radio Communications Receiver 272,341 49 *
Crystal Radio 155,092 53 *
Digital Volume Control 330,473 47 *
Electronic Stethoscope 309,496 142 *
FET Audio Mixer 338,445 41
FM Transmitter 996,369 420
Guitar Fuzz Effect 241,847 54 *
Microphone Mixer Anatoly I. Shikhatov 246,134 26 *
Mono To Stereo Synthesizer oRbEq 129,332 18 *
One Tube Regenerative Radio NEW! 133,191 4 *
Op Amp Radio 381,441 80 *
Single Chip AM Radio NEW! 96,220 2 *
Single Chip FM Radio NEW! 166,997 1 *
Sound Level Meter 337,013 51 *
Stereo Tube Amplifier Weslee Kinsler 263,664 15 *
Tone Control 305,072 31
Transistor Organ 194,586 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 160,547 27 *
FM Telephone Bug 232,479 57
Phone Busy Indicator 210,850 24 *
Remote Telephone Ringer 115,398 3 *
Ringing Phone Light Flasher 212,397 35 *
Simple Phone Tap Derek Tombrello 380,116 98 *
Telephone Hold Button 125,775 10
Telephone Recorder 213,172 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.