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
Saturday, September 25, 2021
12VDC To 120VAC Inverter15
Strobe Light10
Yesterday
Friday, September 24, 2021
FM Transmitter40
12VDC To 120VAC Inverter37
Of All Time 12VDC To 120VAC Inverter1,491,760
FM Transmitter982,484

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 218,363 61 *
Car Alarm Arming Horn Beep Canceller bob 128,997 6 *
Wireless Auto Tachometer 332,693 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,730 29 *
Parallel (Printer) Port Interface 273,876 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 435,537 63 *
3 Channel Spectrum Analyzer 211,369 20
40W Fluorescent Lamp Inverter Bart Milnes 320,820 60 *
Adjustable Strobe Light 297,662 36
Black Light 264,536 29
Colour (Sound) Organ 279,665 36
Electronic Dice NEW! 180,042 10 *
Fantastic Atom Expander 193,780 25
Flash Slave Trigger 211,055 18 *
Infa-Red Remote Control 622,472 216 *
IR Remote Extender NEW! 122,881 2 *
IR Remote Jammer Carl 253,576 110 *
IR Remote Switch NEW! 149,923 9 *
LASER Transmitter/Receiver 400,710 92
LED Chaser 434,102 83 *
LED Metronome NEW! 92,974 3 *
LED Thermometer 198,956 22 *
Light/Dark Detector 297,818 90 *
Simple Colour Organ 130,492 10 *
Strobe Light 265,911 27 *
TRIAC Light Dimmer 539,885 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 349,466 122 *
Electromagnetic Levitator NEW! 136,129 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 908,412 214 *
AC Motor Speed Controller 375,547 29 *
Air Flow Detector 243,345 54 *
Digital Keypad Combination Lock 188,624 20
Low Voltage Alarm 218,920 58 *
Pine Racecar Victory Judge 96,208 1 *
Pulse Width Modulation DC Motor Control 637,703 94
Rain Detector 296,057 112 *
Simple Lie Detector 550,327 323
Simple Polarity Tester Dudley LeRoux 156,903 13 *
Simple Servo Controller 212,073 22 *
Simple Touch Switch NEW! 161,218 5 *
Simple Two Speed Contactor DC Motor Controller 196,562 21 *
Stepper Motor Controller 729,810 120 *
Time Delay Relay 545,713 88
Time Delay Relay II jawaharlal@excite.com 235,726 39 *
Touch Switch 280,634 51 *
Video Activated Relay 114,324 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 171,263 10 *
Water Detector With Sump/Bilge Pump Controller 144,614 18 *
Wire Loop Alarm Alex Meaden 197,804 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 302,521 25 *
12VDC To 120VAC Inverter 1,491,760 689
6V to 12V Converter 512,658 121
Automatic 12V Lead Acid Battery Charger 919,788 248
Automatic Load Sensing Power Switch 157,892 16 *
Car Battery Charger 868,843 159 *
Dual Polarity Power Supply 360,688 84 *
Fixed Voltage Power Supply 300,865 52 *
High Current Power Supply 325,904 66 *
High Voltage High Current Power Supply 243,681 35 *
LASER Power Supply 284,886 28
Portable CD Player Adapter For Car 203,005 12 *
Power Supply 725,299 259 *
Solid State Tesla Coil NEW! 136,296 4
Solid State Tesla Coil/High Voltage Generator 429,417 50
Transformerless Power Supply 452,273 117 *
Voltage Inverter 325,388 51 *
Voltage Inverter II 192,572 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 574,486 182
3 Watt FM Transmitter Rae XL Tkacik 322,794 83 *
50 Watt Amplifier 495,896 74
8 Note Tune Player 133,499 12 *
8 Watt Audio Amp 360,471 67 *
Aircraft Radio Communications Receiver 265,885 49 *
Crystal Radio 151,812 53 *
Digital Volume Control 322,628 47 *
Electronic Stethoscope 303,050 142 *
FET Audio Mixer 332,529 41
FM Transmitter 982,484 420
Guitar Fuzz Effect 235,648 54 *
Microphone Mixer Anatoly I. Shikhatov 241,059 26 *
Mono To Stereo Synthesizer oRbEq 124,098 18 *
One Tube Regenerative Radio NEW! 126,039 4 *
Op Amp Radio 374,400 80 *
Single Chip AM Radio NEW! 92,552 2 *
Single Chip FM Radio NEW! 161,781 1 *
Sound Level Meter 331,389 51 *
Stereo Tube Amplifier Weslee Kinsler 258,467 15 *
Tone Control 298,277 31
Transistor Organ 189,229 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,207 27 *
FM Telephone Bug 228,345 57
Phone Busy Indicator 206,280 24 *
Remote Telephone Ringer 111,453 3 *
Ringing Phone Light Flasher 206,226 35 *
Simple Phone Tap Derek Tombrello 375,655 98 *
Telephone Hold Button 121,377 10
Telephone Recorder 208,607 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.