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, January 22, 2022
12VDC To 120VAC Inverter34
Wireless Auto Tachometer29
Yesterday
Friday, January 21, 2022
6V to 12V Converter38
Flash Slave Trigger35
Of All Time 12VDC To 120VAC Inverter1,496,468
FM Transmitter988,269

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 219,742 61 *
Car Alarm Arming Horn Beep Canceller bob 130,176 6 *
Wireless Auto Tachometer 334,427 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 153,850 29 *
Parallel (Printer) Port Interface 275,648 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 437,544 63 *
3 Channel Spectrum Analyzer 212,831 20
40W Fluorescent Lamp Inverter Bart Milnes 322,334 60 *
Adjustable Strobe Light 299,493 36
Black Light 266,915 29
Colour (Sound) Organ 281,391 36
Electronic Dice NEW! 181,411 10 *
Fantastic Atom Expander 195,895 25
Flash Slave Trigger 212,607 18 *
Infa-Red Remote Control 624,304 216 *
IR Remote Extender NEW! 124,494 2 *
IR Remote Jammer Carl 255,402 110 *
IR Remote Switch NEW! 151,138 9 *
LASER Transmitter/Receiver 402,878 92
LED Chaser 435,797 83 *
LED Metronome NEW! 93,840 3 *
LED Thermometer 200,177 22 *
Light/Dark Detector 299,346 90 *
Simple Colour Organ 131,590 10 *
Strobe Light 267,414 27 *
TRIAC Light Dimmer 541,488 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 351,063 122 *
Electromagnetic Levitator NEW! 137,403 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 910,812 214 *
AC Motor Speed Controller 377,746 29 *
Air Flow Detector 244,609 54 *
Digital Keypad Combination Lock 189,934 20
Low Voltage Alarm 220,990 58 *
Pine Racecar Victory Judge 97,255 1 *
Pulse Width Modulation DC Motor Control 639,438 94
Rain Detector 297,483 112 *
Simple Lie Detector 551,990 323
Simple Polarity Tester Dudley LeRoux 158,319 13 *
Simple Servo Controller 213,926 22 *
Simple Touch Switch NEW! 162,496 5 *
Simple Two Speed Contactor DC Motor Controller 197,871 21 *
Stepper Motor Controller 732,749 120 *
Time Delay Relay 547,276 88
Time Delay Relay II jawaharlal@excite.com 237,389 39 *
Touch Switch 282,018 51 *
Video Activated Relay 115,480 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 172,712 10 *
Water Detector With Sump/Bilge Pump Controller 145,958 18 *
Wire Loop Alarm Alex Meaden 199,119 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 304,275 25 *
12VDC To 120VAC Inverter 1,496,468 689
6V to 12V Converter 515,067 121
Automatic 12V Lead Acid Battery Charger 922,725 248
Automatic Load Sensing Power Switch 159,773 16 *
Car Battery Charger 870,981 159 *
Dual Polarity Power Supply 362,179 84 *
Fixed Voltage Power Supply 302,487 52 *
High Current Power Supply 327,633 66 *
High Voltage High Current Power Supply 245,014 35 *
LASER Power Supply 286,561 28
Portable CD Player Adapter For Car 204,456 12 *
Power Supply 727,139 259 *
Solid State Tesla Coil NEW! 137,657 4
Solid State Tesla Coil/High Voltage Generator 431,528 50
Transformerless Power Supply 453,996 117 *
Voltage Inverter 328,141 51 *
Voltage Inverter II 193,921 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 576,297 182
3 Watt FM Transmitter Rae XL Tkacik 324,608 83 *
50 Watt Amplifier 497,666 74
8 Note Tune Player 134,608 12 *
8 Watt Audio Amp 362,398 67 *
Aircraft Radio Communications Receiver 267,535 49 *
Crystal Radio 152,760 53 *
Digital Volume Control 324,221 47 *
Electronic Stethoscope 304,785 142 *
FET Audio Mixer 334,369 41
FM Transmitter 988,269 420
Guitar Fuzz Effect 237,422 54 *
Microphone Mixer Anatoly I. Shikhatov 242,482 26 *
Mono To Stereo Synthesizer oRbEq 125,539 18 *
One Tube Regenerative Radio NEW! 127,970 4 *
Op Amp Radio 376,433 80 *
Single Chip AM Radio NEW! 93,552 2 *
Single Chip FM Radio NEW! 163,313 1 *
Sound Level Meter 332,957 51 *
Stereo Tube Amplifier Weslee Kinsler 259,943 15 *
Tone Control 300,736 31
Transistor Organ 190,812 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 157,451 27 *
FM Telephone Bug 229,550 57
Phone Busy Indicator 207,587 24 *
Remote Telephone Ringer 112,574 3 *
Ringing Phone Light Flasher 208,140 35 *
Simple Phone Tap Derek Tombrello 376,954 98 *
Telephone Hold Button 122,532 10
Telephone Recorder 209,945 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.