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, June 21, 2018
Pulse Width Modulation DC Motor Control51
Dual Polarity Power Supply45
Yesterday
Wednesday, June 20, 2018
12VDC To 120VAC Inverter51
Dual Polarity Power Supply48
Of All Time 12VDC To 120VAC Inverter1,413,294
FM Transmitter935,129

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,770 61 *
Car Alarm Arming Horn Beep Canceller bob 101,552 6 *
Wireless Auto Tachometer 297,401 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,847 29 *
Parallel (Printer) Port Interface 236,094 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 393,082 63 *
3 Channel Spectrum Analyzer 185,626 20
40W Fluorescent Lamp Inverter Bart Milnes 290,067 60 *
Adjustable Strobe Light 263,287 36
Black Light 225,038 29
Colour (Sound) Organ 247,382 36
Electronic Dice NEW! 150,920 10 *
Fantastic Atom Expander 161,444 25
Flash Slave Trigger 181,775 18 *
Infa-Red Remote Control 581,371 216 *
IR Remote Extender NEW! 91,773 2 *
IR Remote Jammer Carl 225,054 110 *
IR Remote Switch NEW! 122,020 9 *
LASER Transmitter/Receiver 363,167 92
LED Chaser 406,527 83 *
LED Metronome NEW! 80,812 3 *
LED Thermometer 176,058 22 *
Light/Dark Detector 275,330 90 *
Simple Colour Organ 110,893 10 *
Strobe Light 242,798 27 *
TRIAC Light Dimmer 455,637 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,960 122 *
Electromagnetic Levitator NEW! 112,501 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 858,078 214 *
AC Motor Speed Controller 338,652 29 *
Air Flow Detector 219,560 54 *
Digital Keypad Combination Lock 163,097 20
Low Voltage Alarm 193,002 58 *
Pine Racecar Victory Judge 75,325 1 *
Pulse Width Modulation DC Motor Control 610,039 93
Rain Detector 271,905 112 *
Simple Lie Detector 517,374 323
Simple Polarity Tester Dudley LeRoux 128,043 13 *
Simple Servo Controller 184,580 22 *
Simple Touch Switch NEW! 138,792 5 *
Simple Two Speed Contactor DC Motor Controller 175,520 21 *
Stepper Motor Controller 680,109 120 *
Time Delay Relay 512,235 88
Time Delay Relay II jawaharlal@excite.com 204,509 39 *
Touch Switch 256,127 51 *
Video Activated Relay 93,875 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 146,063 10 *
Water Detector With Sump/Bilge Pump Controller 119,611 18 *
Wire Loop Alarm Alex Meaden 177,455 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 268,196 25 *
12VDC To 120VAC Inverter 1,413,294 688
6V to 12V Converter 450,028 121
Automatic 12V Lead Acid Battery Charger 872,717 246
Automatic Load Sensing Power Switch 133,432 16 *
Car Battery Charger 824,309 159 *
Dual Polarity Power Supply 318,862 84 *
Fixed Voltage Power Supply 277,405 52 *
High Current Power Supply 294,845 65 *
High Voltage High Current Power Supply 221,000 35 *
LASER Power Supply 252,426 28
Portable CD Player Adapter For Car 179,096 12 *
Power Supply 686,632 259 *
Solid State Tesla Coil NEW! 117,576 4
Solid State Tesla Coil/High Voltage Generator 387,054 50
Transformerless Power Supply 418,330 117 *
Voltage Inverter 303,615 51 *
Voltage Inverter II 172,577 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 545,113 182
3 Watt FM Transmitter Rae XL Tkacik 295,293 82 *
50 Watt Amplifier 461,485 74
8 Note Tune Player 114,941 12 *
8 Watt Audio Amp 327,761 67 *
Aircraft Radio Communications Receiver 231,989 49 *
Crystal Radio 135,772 53 *
Digital Volume Control 295,885 47 *
Electronic Stethoscope 273,014 141 *
FET Audio Mixer 303,922 41
FM Transmitter 935,129 419
Guitar Fuzz Effect 204,915 52 *
Microphone Mixer Anatoly I. Shikhatov 214,201 26 *
Mono To Stereo Synthesizer oRbEq 97,892 18 *
One Tube Regenerative Radio NEW! 103,875 4 *
Op Amp Radio 343,547 80 *
Single Chip AM Radio NEW! 79,696 2 *
Single Chip FM Radio NEW! 132,652 1 *
Sound Level Meter 303,669 51 *
Stereo Tube Amplifier Weslee Kinsler 231,820 15 *
Tone Control 267,625 31
Transistor Organ 162,616 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,638 27 *
FM Telephone Bug 201,784 57
Phone Busy Indicator 183,721 24 *
Remote Telephone Ringer 92,803 3 *
Ringing Phone Light Flasher 181,181 34 *
Simple Phone Tap Derek Tombrello 329,005 98 *
Telephone Hold Button 97,134 10
Telephone Recorder 182,240 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.