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
Sunday, September 24, 2017
Solid State Tesla Coil/High Voltage Generator5
Black Light3
Yesterday
Saturday, September 23, 2017
Dual Polarity Power Supply91
12VDC To 120VAC Inverter61
Of All Time 12VDC To 120VAC Inverter1,389,956
FM Transmitter922,449

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 185,433 61 *
Car Alarm Arming Horn Beep Canceller bob 97,893 6 *
Wireless Auto Tachometer 292,590 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 129,286 29 *
Parallel (Printer) Port Interface 231,597 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 386,691 62 *
3 Channel Spectrum Analyzer 179,393 20
40W Fluorescent Lamp Inverter Bart Milnes 285,165 60 *
Adjustable Strobe Light 257,576 36
Black Light 219,691 29
Colour (Sound) Organ 241,879 36
Electronic Dice NEW! 146,814 9 *
Fantastic Atom Expander 156,210 25
Flash Slave Trigger 177,581 17 *
Infa-Red Remote Control 574,128 216 *
IR Remote Extender NEW! 86,788 2 *
IR Remote Jammer Carl 219,722 110 *
IR Remote Switch NEW! 116,714 9 *
LASER Transmitter/Receiver 357,279 92
LED Chaser 400,006 83 *
LED Metronome NEW! 77,125 3 *
LED Thermometer 171,298 22 *
Light/Dark Detector 269,893 89 *
Simple Colour Organ 107,435 10 *
Strobe Light 238,702 27 *
TRIAC Light Dimmer 448,635 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 306,866 122 *
Electromagnetic Levitator NEW! 107,631 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 847,332 214 *
AC Motor Speed Controller 330,671 29 *
Air Flow Detector 214,746 54 *
Digital Keypad Combination Lock 158,530 20
Low Voltage Alarm 187,688 58 *
Pine Racecar Victory Judge 72,043 1 *
Pulse Width Modulation DC Motor Control 602,674 93
Rain Detector 267,383 112 *
Simple Lie Detector 509,970 323
Simple Polarity Tester Dudley LeRoux 123,399 13 *
Simple Servo Controller 179,489 22 *
Simple Touch Switch NEW! 134,358 5 *
Simple Two Speed Contactor DC Motor Controller 171,352 21 *
Stepper Motor Controller 665,463 120 *
Time Delay Relay 503,476 88
Time Delay Relay II jawaharlal@excite.com 199,507 39 *
Touch Switch 251,190 51 *
Video Activated Relay 89,844 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 141,228 10 *
Water Detector With Sump/Bilge Pump Controller 114,947 18 *
Wire Loop Alarm Alex Meaden 173,295 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 260,461 25 *
12VDC To 120VAC Inverter 1,389,956 687
6V to 12V Converter 438,851 121
Automatic 12V Lead Acid Battery Charger 857,172 246
Automatic Load Sensing Power Switch 128,408 15 *
Car Battery Charger 810,435 159 *
Dual Polarity Power Supply 301,345 84 *
Fixed Voltage Power Supply 272,511 52 *
High Current Power Supply 289,385 64 *
High Voltage High Current Power Supply 216,481 35 *
LASER Power Supply 246,311 28
Portable CD Player Adapter For Car 173,964 12 *
Power Supply 676,209 259 *
Solid State Tesla Coil NEW! 111,644 3
Solid State Tesla Coil/High Voltage Generator 377,824 50
Transformerless Power Supply 412,254 117 *
Voltage Inverter 298,058 51 *
Voltage Inverter II 168,993 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 536,662 182
3 Watt FM Transmitter Rae XL Tkacik 288,986 81 *
50 Watt Amplifier 452,596 74
8 Note Tune Player 111,134 12 *
8 Watt Audio Amp 321,128 67 *
Aircraft Radio Communications Receiver 225,507 49 *
Crystal Radio 132,069 53 *
Digital Volume Control 290,077 47 *
Electronic Stethoscope 265,672 141 *
FET Audio Mixer 295,716 40
FM Transmitter 922,449 418
Guitar Fuzz Effect 199,374 52 *
Microphone Mixer Anatoly I. Shikhatov 208,069 26 *
Mono To Stereo Synthesizer oRbEq 93,839 18 *
One Tube Regenerative Radio NEW! 98,689 4 *
Op Amp Radio 334,829 80 *
Single Chip AM Radio NEW! 75,928 2 *
Single Chip FM Radio NEW! 126,802 1 *
Sound Level Meter 297,796 51 *
Stereo Tube Amplifier Weslee Kinsler 227,052 15 *
Tone Control 261,666 31
Transistor Organ 157,583 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 133,521 27 *
FM Telephone Bug 197,543 57
Phone Busy Indicator 176,531 24 *
Remote Telephone Ringer 89,499 3 *
Ringing Phone Light Flasher 175,766 33 *
Simple Phone Tap Derek Tombrello 325,142 98 *
Telephone Hold Button 93,690 9
Telephone Recorder 177,919 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.