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
Monday, July 26, 2021
12VDC To 120VAC Inverter43
Black Light29
Yesterday
Sunday, July 25, 2021
12VDC To 120VAC Inverter52
Stepper Motor Controller30
Of All Time 12VDC To 120VAC Inverter1,489,563
FM Transmitter980,943

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 217,724 61 *
Car Alarm Arming Horn Beep Canceller bob 128,489 6 *
Wireless Auto Tachometer 331,821 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,213 29 *
Parallel (Printer) Port Interface 273,065 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 434,513 63 *
3 Channel Spectrum Analyzer 210,612 20
40W Fluorescent Lamp Inverter Bart Milnes 320,198 60 *
Adjustable Strobe Light 296,953 36
Black Light 263,439 29
Colour (Sound) Organ 278,950 36
Electronic Dice NEW! 179,454 10 *
Fantastic Atom Expander 193,123 25
Flash Slave Trigger 210,198 18 *
Infa-Red Remote Control 621,666 216 *
IR Remote Extender NEW! 122,144 2 *
IR Remote Jammer Carl 252,196 110 *
IR Remote Switch NEW! 149,402 9 *
LASER Transmitter/Receiver 399,795 92
LED Chaser 433,382 83 *
LED Metronome NEW! 92,526 3 *
LED Thermometer 198,397 22 *
Light/Dark Detector 297,223 90 *
Simple Colour Organ 130,051 10 *
Strobe Light 265,162 27 *
TRIAC Light Dimmer 539,173 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 348,787 122 *
Electromagnetic Levitator NEW! 135,410 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 907,373 214 *
AC Motor Speed Controller 374,558 29 *
Air Flow Detector 242,795 54 *
Digital Keypad Combination Lock 188,056 20
Low Voltage Alarm 218,272 58 *
Pine Racecar Victory Judge 95,735 1 *
Pulse Width Modulation DC Motor Control 636,908 94
Rain Detector 295,383 112 *
Simple Lie Detector 549,580 323
Simple Polarity Tester Dudley LeRoux 156,318 13 *
Simple Servo Controller 211,391 22 *
Simple Touch Switch NEW! 160,601 5 *
Simple Two Speed Contactor DC Motor Controller 195,881 21 *
Stepper Motor Controller 728,807 120 *
Time Delay Relay 544,958 88
Time Delay Relay II jawaharlal@excite.com 234,990 39 *
Touch Switch 280,019 51 *
Video Activated Relay 113,831 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 170,616 10 *
Water Detector With Sump/Bilge Pump Controller 143,860 18 *
Wire Loop Alarm Alex Meaden 197,268 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 301,726 25 *
12VDC To 120VAC Inverter 1,489,563 689
6V to 12V Converter 511,439 121
Automatic 12V Lead Acid Battery Charger 918,699 248
Automatic Load Sensing Power Switch 157,219 16 *
Car Battery Charger 868,038 159 *
Dual Polarity Power Supply 359,966 84 *
Fixed Voltage Power Supply 300,120 52 *
High Current Power Supply 325,061 66 *
High Voltage High Current Power Supply 243,040 35 *
LASER Power Supply 284,132 28
Portable CD Player Adapter For Car 202,210 12 *
Power Supply 724,441 259 *
Solid State Tesla Coil NEW! 135,665 4
Solid State Tesla Coil/High Voltage Generator 428,185 50
Transformerless Power Supply 451,514 117 *
Voltage Inverter 324,388 51 *
Voltage Inverter II 192,016 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 573,666 182
3 Watt FM Transmitter Rae XL Tkacik 321,948 83 *
50 Watt Amplifier 495,061 74
8 Note Tune Player 133,005 12 *
8 Watt Audio Amp 359,623 67 *
Aircraft Radio Communications Receiver 265,107 49 *
Crystal Radio 151,372 53 *
Digital Volume Control 321,916 47 *
Electronic Stethoscope 302,183 142 *
FET Audio Mixer 331,710 41
FM Transmitter 980,943 420
Guitar Fuzz Effect 234,644 54 *
Microphone Mixer Anatoly I. Shikhatov 240,343 26 *
Mono To Stereo Synthesizer oRbEq 123,370 18 *
One Tube Regenerative Radio NEW! 125,262 4 *
Op Amp Radio 373,490 80 *
Single Chip AM Radio NEW! 92,074 2 *
Single Chip FM Radio NEW! 161,082 1 *
Sound Level Meter 330,722 51 *
Stereo Tube Amplifier Weslee Kinsler 257,844 15 *
Tone Control 297,478 31
Transistor Organ 188,518 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 155,629 27 *
FM Telephone Bug 227,758 57
Phone Busy Indicator 205,683 24 *
Remote Telephone Ringer 110,928 3 *
Ringing Phone Light Flasher 205,385 35 *
Simple Phone Tap Derek Tombrello 375,029 98 *
Telephone Hold Button 120,807 10
Telephone Recorder 207,967 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.