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
Thursday, October 06, 2022
50 Watt Amplifier12
Op Amp Radio12
Yesterday
Wednesday, October 05, 2022
12VDC To 120VAC Inverter33
One Tube Regenerative Radio31
Of All Time 12VDC To 120VAC Inverter1,505,930
FM Transmitter995,045

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 222,767 61 *
Car Alarm Arming Horn Beep Canceller bob 132,742 6 *
Wireless Auto Tachometer 337,891 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 156,288 29 *
Parallel (Printer) Port Interface 279,643 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 441,539 63 *
3 Channel Spectrum Analyzer 216,228 20
40W Fluorescent Lamp Inverter Bart Milnes 325,388 60 *
Adjustable Strobe Light 303,313 36
Black Light 272,179 29
Colour (Sound) Organ 284,861 36
Electronic Dice NEW! 184,360 10 *
Fantastic Atom Expander 198,997 25
Flash Slave Trigger 215,921 18 *
Infa-Red Remote Control 628,352 216 *
IR Remote Extender NEW! 127,581 2 *
IR Remote Jammer Carl 260,008 110 *
IR Remote Switch NEW! 153,599 9 *
LASER Transmitter/Receiver 407,793 92
LED Chaser 439,509 83 *
LED Metronome NEW! 95,891 3 *
LED Thermometer 202,769 22 *
Light/Dark Detector 302,075 90 *
Simple Colour Organ 133,936 11 *
Strobe Light 271,049 27 *
TRIAC Light Dimmer 545,203 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 354,260 122 *
Electromagnetic Levitator NEW! 140,000 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 915,245 214 *
AC Motor Speed Controller 382,443 29 *
Air Flow Detector 247,451 54 *
Digital Keypad Combination Lock 192,746 20
Low Voltage Alarm 224,962 58 *
Pine Racecar Victory Judge 99,539 1 *
Pulse Width Modulation DC Motor Control 642,780 94
Rain Detector 300,370 112 *
Simple Lie Detector 555,239 323
Simple Polarity Tester Dudley LeRoux 161,087 13 *
Simple Servo Controller 216,846 22 *
Simple Touch Switch NEW! 165,422 5 *
Simple Two Speed Contactor DC Motor Controller 200,628 21 *
Stepper Motor Controller 737,436 120 *
Time Delay Relay 550,260 88
Time Delay Relay II jawaharlal@excite.com 241,045 39 *
Touch Switch 285,054 51 *
Video Activated Relay 118,025 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 175,647 10 *
Water Detector With Sump/Bilge Pump Controller 148,732 18 *
Wire Loop Alarm Alex Meaden 201,791 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 307,757 25 *
12VDC To 120VAC Inverter 1,505,930 691
6V to 12V Converter 519,738 121
Automatic 12V Lead Acid Battery Charger 928,801 248
Automatic Load Sensing Power Switch 162,728 16 *
Car Battery Charger 875,301 159 *
Dual Polarity Power Supply 365,668 84 *
Fixed Voltage Power Supply 305,881 52 *
High Current Power Supply 331,581 66 *
High Voltage High Current Power Supply 247,998 35 *
LASER Power Supply 290,196 28
Portable CD Player Adapter For Car 207,657 12 *
Power Supply 731,047 259 *
Solid State Tesla Coil NEW! 140,786 4
Solid State Tesla Coil/High Voltage Generator 436,502 51
Transformerless Power Supply 457,537 117 *
Voltage Inverter 331,882 51 *
Voltage Inverter II 197,112 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 579,691 182
3 Watt FM Transmitter Rae XL Tkacik 328,237 83 *
50 Watt Amplifier 501,242 74
8 Note Tune Player 137,043 12 *
8 Watt Audio Amp 366,125 67 *
Aircraft Radio Communications Receiver 271,487 49 *
Crystal Radio 154,727 53 *
Digital Volume Control 327,766 47 *
Electronic Stethoscope 308,814 142 *
FET Audio Mixer 337,824 41
FM Transmitter 995,045 420
Guitar Fuzz Effect 241,185 54 *
Microphone Mixer Anatoly I. Shikhatov 245,545 26 *
Mono To Stereo Synthesizer oRbEq 128,781 18 *
One Tube Regenerative Radio NEW! 132,315 4 *
Op Amp Radio 380,605 80 *
Single Chip AM Radio NEW! 95,764 2 *
Single Chip FM Radio NEW! 166,347 1 *
Sound Level Meter 336,346 51 *
Stereo Tube Amplifier Weslee Kinsler 263,033 15 *
Tone Control 304,411 31
Transistor Organ 194,049 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 160,086 27 *
FM Telephone Bug 232,057 57
Phone Busy Indicator 210,361 24 *
Remote Telephone Ringer 114,983 3 *
Ringing Phone Light Flasher 211,757 35 *
Simple Phone Tap Derek Tombrello 379,644 98 *
Telephone Hold Button 125,270 10
Telephone Recorder 212,657 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.