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, August 20, 2017
Op Amp Radio118
Dual Polarity Power Supply115
Yesterday
Saturday, August 19, 2017
Dual Polarity Power Supply139
12VDC To 120VAC Inverter86
Of All Time 12VDC To 120VAC Inverter1,387,127
FM Transmitter920,913

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 184,892 61 *
Car Alarm Arming Horn Beep Canceller bob 97,177 6 *
Wireless Auto Tachometer 291,838 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 128,701 29 *
Parallel (Printer) Port Interface 231,056 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 385,758 62 *
3 Channel Spectrum Analyzer 178,564 20
40W Fluorescent Lamp Inverter Bart Milnes 284,539 60 *
Adjustable Strobe Light 256,640 36
Black Light 218,885 29
Colour (Sound) Organ 241,142 36
Electronic Dice NEW! 146,387 9 *
Fantastic Atom Expander 155,535 25
Flash Slave Trigger 176,891 17 *
Infa-Red Remote Control 573,417 216 *
IR Remote Extender NEW! 86,258 2 *
IR Remote Jammer Carl 219,172 110 *
IR Remote Switch NEW! 116,244 9 *
LASER Transmitter/Receiver 356,617 92
LED Chaser 399,204 83 *
LED Metronome NEW! 76,776 3 *
LED Thermometer 170,616 22 *
Light/Dark Detector 269,177 89 *
Simple Colour Organ 107,026 10 *
Strobe Light 238,058 27 *
TRIAC Light Dimmer 447,692 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 306,262 122 *
Electromagnetic Levitator NEW! 107,054 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 846,105 214 *
AC Motor Speed Controller 329,632 29 *
Air Flow Detector 214,168 54 *
Digital Keypad Combination Lock 157,948 20
Low Voltage Alarm 186,923 58 *
Pine Racecar Victory Judge 71,536 1 *
Pulse Width Modulation DC Motor Control 601,710 93
Rain Detector 266,671 112 *
Simple Lie Detector 509,061 323
Simple Polarity Tester Dudley LeRoux 122,741 13 *
Simple Servo Controller 178,700 22 *
Simple Touch Switch NEW! 133,909 5 *
Simple Two Speed Contactor DC Motor Controller 170,781 21 *
Stepper Motor Controller 664,227 120 *
Time Delay Relay 502,431 88
Time Delay Relay II jawaharlal@excite.com 198,850 39 *
Touch Switch 250,351 51 *
Video Activated Relay 89,364 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 140,770 10 *
Water Detector With Sump/Bilge Pump Controller 114,440 18 *
Wire Loop Alarm Alex Meaden 172,685 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 259,479 25 *
12VDC To 120VAC Inverter 1,387,127 687
6V to 12V Converter 437,396 121
Automatic 12V Lead Acid Battery Charger 855,239 246
Automatic Load Sensing Power Switch 127,862 15 *
Car Battery Charger 808,768 159 *
Dual Polarity Power Supply 298,175 84 *
Fixed Voltage Power Supply 271,787 52 *
High Current Power Supply 288,563 64 *
High Voltage High Current Power Supply 215,837 35 *
LASER Power Supply 245,484 28
Portable CD Player Adapter For Car 173,240 12 *
Power Supply 674,976 259 *
Solid State Tesla Coil NEW! 111,095 3
Solid State Tesla Coil/High Voltage Generator 376,600 50
Transformerless Power Supply 411,484 117 *
Voltage Inverter 297,316 51 *
Voltage Inverter II 168,550 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 535,526 182
3 Watt FM Transmitter Rae XL Tkacik 287,942 81 *
50 Watt Amplifier 451,305 74
8 Note Tune Player 110,657 12 *
8 Watt Audio Amp 319,969 67 *
Aircraft Radio Communications Receiver 224,623 49 *
Crystal Radio 131,559 53 *
Digital Volume Control 289,176 47 *
Electronic Stethoscope 264,836 141 *
FET Audio Mixer 294,728 40
FM Transmitter 920,913 418
Guitar Fuzz Effect 198,603 52 *
Microphone Mixer Anatoly I. Shikhatov 207,302 26 *
Mono To Stereo Synthesizer oRbEq 93,159 18 *
One Tube Regenerative Radio NEW! 98,045 4 *
Op Amp Radio 333,769 80 *
Single Chip AM Radio NEW! 75,472 2 *
Single Chip FM Radio NEW! 126,132 1 *
Sound Level Meter 297,074 51 *
Stereo Tube Amplifier Weslee Kinsler 226,247 15 *
Tone Control 260,373 31
Transistor Organ 156,891 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 133,041 27 *
FM Telephone Bug 196,860 57
Phone Busy Indicator 175,814 24 *
Remote Telephone Ringer 89,066 3 *
Ringing Phone Light Flasher 175,051 33 *
Simple Phone Tap Derek Tombrello 324,541 98 *
Telephone Hold Button 93,215 9
Telephone Recorder 177,398 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.