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, June 13, 2021
High Voltage High Current Power Supply11
Black Light11
Yesterday
Saturday, June 12, 2021
12VDC To 120VAC Inverter38
Voltage Inverter34
Of All Time 12VDC To 120VAC Inverter1,487,721
FM Transmitter979,814

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 217,137 61 *
Car Alarm Arming Horn Beep Canceller bob 127,942 6 *
Wireless Auto Tachometer 331,105 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 151,685 29 *
Parallel (Printer) Port Interface 272,192 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 433,638 63 *
3 Channel Spectrum Analyzer 209,972 20
40W Fluorescent Lamp Inverter Bart Milnes 319,536 60 *
Adjustable Strobe Light 296,274 36
Black Light 262,419 29
Colour (Sound) Organ 278,273 36
Electronic Dice NEW! 178,788 10 *
Fantastic Atom Expander 192,520 25
Flash Slave Trigger 209,537 18 *
Infa-Red Remote Control 620,901 216 *
IR Remote Extender NEW! 121,576 2 *
IR Remote Jammer Carl 251,639 110 *
IR Remote Switch NEW! 148,856 9 *
LASER Transmitter/Receiver 398,814 92
LED Chaser 432,721 83 *
LED Metronome NEW! 92,183 3 *
LED Thermometer 197,920 22 *
Light/Dark Detector 296,691 90 *
Simple Colour Organ 129,577 10 *
Strobe Light 264,568 27 *
TRIAC Light Dimmer 538,648 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 348,154 122 *
Electromagnetic Levitator NEW! 134,880 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 906,443 214 *
AC Motor Speed Controller 373,704 29 *
Air Flow Detector 242,241 54 *
Digital Keypad Combination Lock 187,525 20
Low Voltage Alarm 217,735 58 *
Pine Racecar Victory Judge 95,325 1 *
Pulse Width Modulation DC Motor Control 636,250 94
Rain Detector 294,885 112 *
Simple Lie Detector 548,673 323
Simple Polarity Tester Dudley LeRoux 155,711 13 *
Simple Servo Controller 210,834 22 *
Simple Touch Switch NEW! 160,065 5 *
Simple Two Speed Contactor DC Motor Controller 195,343 21 *
Stepper Motor Controller 727,957 120 *
Time Delay Relay 544,325 88
Time Delay Relay II jawaharlal@excite.com 234,222 39 *
Touch Switch 279,459 51 *
Video Activated Relay 113,373 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 169,973 10 *
Water Detector With Sump/Bilge Pump Controller 143,118 18 *
Wire Loop Alarm Alex Meaden 196,779 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 301,072 25 *
12VDC To 120VAC Inverter 1,487,721 689
6V to 12V Converter 510,552 121
Automatic 12V Lead Acid Battery Charger 917,748 248
Automatic Load Sensing Power Switch 156,643 16 *
Car Battery Charger 867,275 159 *
Dual Polarity Power Supply 359,369 84 *
Fixed Voltage Power Supply 299,479 52 *
High Current Power Supply 324,363 66 *
High Voltage High Current Power Supply 242,485 35 *
LASER Power Supply 283,389 28
Portable CD Player Adapter For Car 201,608 12 *
Power Supply 723,631 259 *
Solid State Tesla Coil NEW! 135,136 4
Solid State Tesla Coil/High Voltage Generator 427,222 50
Transformerless Power Supply 450,824 117 *
Voltage Inverter 323,731 51 *
Voltage Inverter II 191,451 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 573,002 182
3 Watt FM Transmitter Rae XL Tkacik 321,226 83 *
50 Watt Amplifier 494,445 74
8 Note Tune Player 132,573 12 *
8 Watt Audio Amp 358,926 67 *
Aircraft Radio Communications Receiver 264,412 49 *
Crystal Radio 151,035 53 *
Digital Volume Control 321,227 47 *
Electronic Stethoscope 301,491 142 *
FET Audio Mixer 331,049 41
FM Transmitter 979,814 420
Guitar Fuzz Effect 234,010 54 *
Microphone Mixer Anatoly I. Shikhatov 239,747 26 *
Mono To Stereo Synthesizer oRbEq 122,724 18 *
One Tube Regenerative Radio NEW! 124,690 4 *
Op Amp Radio 372,714 80 *
Single Chip AM Radio NEW! 91,674 2 *
Single Chip FM Radio NEW! 160,471 1 *
Sound Level Meter 330,112 51 *
Stereo Tube Amplifier Weslee Kinsler 257,258 15 *
Tone Control 296,795 31
Transistor Organ 187,932 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 155,139 27 *
FM Telephone Bug 227,281 57
Phone Busy Indicator 205,187 24 *
Remote Telephone Ringer 110,449 3 *
Ringing Phone Light Flasher 204,717 35 *
Simple Phone Tap Derek Tombrello 374,483 98 *
Telephone Hold Button 120,277 10
Telephone Recorder 207,382 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.