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
Wednesday, June 20, 2018
Dual Polarity Power Supply43
12VDC To 120VAC Inverter40
Yesterday
Tuesday, June 19, 2018
Dual Polarity Power Supply82
12VDC To 120VAC Inverter58
Of All Time 12VDC To 120VAC Inverter1,413,248
FM Transmitter935,105

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,747 61 *
Car Alarm Arming Horn Beep Canceller bob 101,541 6 *
Wireless Auto Tachometer 297,385 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,842 29 *
Parallel (Printer) Port Interface 236,079 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 393,066 63 *
3 Channel Spectrum Analyzer 185,612 20
40W Fluorescent Lamp Inverter Bart Milnes 290,060 60 *
Adjustable Strobe Light 263,270 36
Black Light 225,021 29
Colour (Sound) Organ 247,376 36
Electronic Dice NEW! 150,912 10 *
Fantastic Atom Expander 161,432 25
Flash Slave Trigger 181,765 18 *
Infa-Red Remote Control 581,346 216 *
IR Remote Extender NEW! 91,753 2 *
IR Remote Jammer Carl 225,037 110 *
IR Remote Switch NEW! 122,006 9 *
LASER Transmitter/Receiver 363,143 92
LED Chaser 406,506 83 *
LED Metronome NEW! 80,806 3 *
LED Thermometer 176,039 22 *
Light/Dark Detector 275,319 90 *
Simple Colour Organ 110,881 10 *
Strobe Light 242,785 27 *
TRIAC Light Dimmer 455,617 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,952 122 *
Electromagnetic Levitator NEW! 112,496 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 858,058 214 *
AC Motor Speed Controller 338,615 29 *
Air Flow Detector 219,542 54 *
Digital Keypad Combination Lock 163,083 20
Low Voltage Alarm 192,979 58 *
Pine Racecar Victory Judge 75,316 1 *
Pulse Width Modulation DC Motor Control 609,978 93
Rain Detector 271,889 112 *
Simple Lie Detector 517,345 323
Simple Polarity Tester Dudley LeRoux 128,030 13 *
Simple Servo Controller 184,559 22 *
Simple Touch Switch NEW! 138,781 5 *
Simple Two Speed Contactor DC Motor Controller 175,510 21 *
Stepper Motor Controller 680,066 120 *
Time Delay Relay 512,210 88
Time Delay Relay II jawaharlal@excite.com 204,495 39 *
Touch Switch 256,115 51 *
Video Activated Relay 93,866 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 146,054 10 *
Water Detector With Sump/Bilge Pump Controller 119,604 18 *
Wire Loop Alarm Alex Meaden 177,447 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 268,171 25 *
12VDC To 120VAC Inverter 1,413,248 688
6V to 12V Converter 449,990 121
Automatic 12V Lead Acid Battery Charger 872,694 246
Automatic Load Sensing Power Switch 133,418 16 *
Car Battery Charger 824,266 159 *
Dual Polarity Power Supply 318,811 84 *
Fixed Voltage Power Supply 277,383 52 *
High Current Power Supply 294,827 65 *
High Voltage High Current Power Supply 220,984 35 *
LASER Power Supply 252,404 28
Portable CD Player Adapter For Car 179,085 12 *
Power Supply 686,604 259 *
Solid State Tesla Coil NEW! 117,561 4
Solid State Tesla Coil/High Voltage Generator 387,029 50
Transformerless Power Supply 418,314 117 *
Voltage Inverter 303,595 51 *
Voltage Inverter II 172,570 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 545,092 182
3 Watt FM Transmitter Rae XL Tkacik 295,280 82 *
50 Watt Amplifier 461,452 74
8 Note Tune Player 114,933 12 *
8 Watt Audio Amp 327,741 67 *
Aircraft Radio Communications Receiver 231,959 49 *
Crystal Radio 135,760 53 *
Digital Volume Control 295,862 47 *
Electronic Stethoscope 272,991 141 *
FET Audio Mixer 303,899 41
FM Transmitter 935,105 419
Guitar Fuzz Effect 204,900 52 *
Microphone Mixer Anatoly I. Shikhatov 214,181 26 *
Mono To Stereo Synthesizer oRbEq 97,882 18 *
One Tube Regenerative Radio NEW! 103,857 4 *
Op Amp Radio 343,533 80 *
Single Chip AM Radio NEW! 79,684 2 *
Single Chip FM Radio NEW! 132,634 1 *
Sound Level Meter 303,652 51 *
Stereo Tube Amplifier Weslee Kinsler 231,805 15 *
Tone Control 267,615 31
Transistor Organ 162,604 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,629 27 *
FM Telephone Bug 201,774 57
Phone Busy Indicator 183,716 24 *
Remote Telephone Ringer 92,794 3 *
Ringing Phone Light Flasher 181,155 34 *
Simple Phone Tap Derek Tombrello 328,993 98 *
Telephone Hold Button 97,127 10
Telephone Recorder 182,229 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.