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
Tuesday, August 04, 2015
Pulse Width Modulation DC Motor Control22
FM Transmitter10
Yesterday
Monday, August 03, 2015
12VDC To 120VAC Inverter169
Automatic 12V Lead Acid Battery Charger113
Of All Time 12VDC To 120VAC Inverter1,300,426
FM Transmitter873,946

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 173,197 61 *
Car Alarm Arming Horn Beep Canceller bob 88,323 6 *
Wireless Auto Tachometer 276,424 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 116,625 29 *
Parallel (Printer) Port Interface 217,670 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 362,347 62 *
3 Channel Spectrum Analyzer 158,482 19
40W Fluorescent Lamp Inverter Bart Milnes 266,111 60 *
Adjustable Strobe Light 236,757 36
Black Light 201,307 29
Colour (Sound) Organ 223,601 34
Electronic Dice NEW! 129,913 8 *
Fantastic Atom Expander 140,146 24
Flash Slave Trigger 163,451 17 *
Infa-Red Remote Control 546,338 216 *
IR Remote Extender NEW! 72,599 2 *
IR Remote Jammer Carl 202,878 110 *
IR Remote Switch NEW! 102,550 9 *
LASER Transmitter/Receiver 332,117 91
LED Chaser 378,280 83 *
LED Metronome NEW! 65,947 3 *
LED Thermometer 157,549 22 *
Light/Dark Detector 242,261 89 *
Simple Colour Organ 96,381 10 *
Strobe Light 221,817 27 *
TRIAC Light Dimmer 415,276 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 289,497 122 *
Electromagnetic Levitator NEW! 92,129 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 799,555 214 *
AC Motor Speed Controller 299,463 29 *
Air Flow Detector 195,253 54 *
Digital Keypad Combination Lock 145,188 20
Low Voltage Alarm 168,725 58 *
Pine Racecar Victory Judge 62,833 1 *
Pulse Width Modulation DC Motor Control 571,269 93
Rain Detector 248,554 111 *
Simple Lie Detector 479,717 321
Simple Polarity Tester Dudley LeRoux 107,105 13 *
Simple Servo Controller 163,092 22 *
Simple Touch Switch NEW! 117,860 5 *
Simple Two Speed Contactor DC Motor Controller 156,471 21 *
Stepper Motor Controller 626,416 120 *
Time Delay Relay 467,357 86
Time Delay Relay II jawaharlal@excite.com 183,528 39 *
Touch Switch 233,413 51 *
Video Activated Relay 77,746 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 127,128 9 *
Water Detector With Sump/Bilge Pump Controller 104,283 18 *
Wire Loop Alarm Alex Meaden 158,472 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 227,678 24 *
12VDC To 120VAC Inverter 1,300,426 684
6V to 12V Converter 399,657 121
Automatic 12V Lead Acid Battery Charger 787,412 239
Automatic Load Sensing Power Switch 113,931 14 *
Car Battery Charger 766,594 158 *
Dual Polarity Power Supply 271,772 84 *
Fixed Voltage Power Supply 252,544 52 *
High Current Power Supply 265,907 64 *
High Voltage High Current Power Supply 199,018 34 *
LASER Power Supply 223,877 28
Portable CD Player Adapter For Car 156,683 12 *
Power Supply 637,183 258 *
Solid State Tesla Coil NEW! 95,949 3
Solid State Tesla Coil/High Voltage Generator 343,240 49
Transformerless Power Supply 385,610 116 *
Voltage Inverter 274,753 51 *
Voltage Inverter II 157,190 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 506,114 182
3 Watt FM Transmitter Rae XL Tkacik 264,839 80 *
50 Watt Amplifier 419,453 73
8 Note Tune Player 99,116 12 *
8 Watt Audio Amp 293,866 66 *
Aircraft Radio Communications Receiver 202,056 49 *
Crystal Radio 118,949 53 *
Digital Volume Control 270,200 46 *
Electronic Stethoscope 237,707 139 *
FET Audio Mixer 272,419 40
FM Transmitter 873,946 418
Guitar Fuzz Effect 179,754 51 *
Microphone Mixer Anatoly I. Shikhatov 188,468 25 *
Mono To Stereo Synthesizer oRbEq 80,142 17 *
One Tube Regenerative Radio NEW! 80,498 4 *
Op Amp Radio 307,096 80 *
Single Chip AM Radio NEW! 63,681 2 *
Single Chip FM Radio NEW! 107,398 0 *
Sound Level Meter 275,526 51 *
Stereo Tube Amplifier Weslee Kinsler 211,529 15 *
Tone Control 239,575 30
Transistor Organ 141,373 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 123,461 27 *
FM Telephone Bug 184,135 57
Phone Busy Indicator 149,077 24 *
Remote Telephone Ringer 80,062 3 *
Ringing Phone Light Flasher 158,377 32 *
Simple Phone Tap Derek Tombrello 309,258 98 *
Telephone Hold Button 79,945 9
Telephone Recorder 164,718 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.