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, January 22, 2018
12VDC To 120VAC Inverter68
Dual Polarity Power Supply68
Yesterday
Sunday, January 21, 2018
12VDC To 120VAC Inverter107
Car Battery Charger78
Of All Time 12VDC To 120VAC Inverter1,401,223
FM Transmitter928,230

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 187,453 61 *
Car Alarm Arming Horn Beep Canceller bob 99,385 6 *
Wireless Auto Tachometer 294,903 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 131,055 29 *
Parallel (Printer) Port Interface 233,655 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 389,603 62 *
3 Channel Spectrum Analyzer 182,292 20
40W Fluorescent Lamp Inverter Bart Milnes 287,610 60 *
Adjustable Strobe Light 260,242 36
Black Light 222,080 29
Colour (Sound) Organ 244,451 36
Electronic Dice NEW! 148,588 9 *
Fantastic Atom Expander 158,697 25
Flash Slave Trigger 179,487 17 *
Infa-Red Remote Control 577,097 216 *
IR Remote Extender NEW! 88,984 2 *
IR Remote Jammer Carl 222,016 110 *
IR Remote Switch NEW! 119,058 9 *
LASER Transmitter/Receiver 359,872 92
LED Chaser 403,311 83 *
LED Metronome NEW! 78,704 3 *
LED Thermometer 173,430 22 *
Light/Dark Detector 272,464 89 *
Simple Colour Organ 108,966 10 *
Strobe Light 240,781 27 *
TRIAC Light Dimmer 452,141 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 309,217 122 *
Electromagnetic Levitator NEW! 109,876 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 852,210 214 *
AC Motor Speed Controller 334,410 29 *
Air Flow Detector 216,969 54 *
Digital Keypad Combination Lock 160,835 20
Low Voltage Alarm 190,061 58 *
Pine Racecar Victory Judge 73,543 1 *
Pulse Width Modulation DC Motor Control 606,289 93
Rain Detector 269,382 112 *
Simple Lie Detector 513,038 323
Simple Polarity Tester Dudley LeRoux 125,602 13 *
Simple Servo Controller 181,975 22 *
Simple Touch Switch NEW! 136,449 5 *
Simple Two Speed Contactor DC Motor Controller 173,441 21 *
Stepper Motor Controller 671,933 120 *
Time Delay Relay 507,404 88
Time Delay Relay II jawaharlal@excite.com 201,881 39 *
Touch Switch 253,620 51 *
Video Activated Relay 91,631 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 143,070 10 *
Water Detector With Sump/Bilge Pump Controller 117,166 18 *
Wire Loop Alarm Alex Meaden 175,140 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 263,694 25 *
12VDC To 120VAC Inverter 1,401,223 687
6V to 12V Converter 443,957 121
Automatic 12V Lead Acid Battery Charger 864,266 246
Automatic Load Sensing Power Switch 130,549 15 *
Car Battery Charger 816,463 159 *
Dual Polarity Power Supply 309,370 84 *
Fixed Voltage Power Supply 274,594 52 *
High Current Power Supply 291,900 64 *
High Voltage High Current Power Supply 218,508 35 *
LASER Power Supply 249,059 28
Portable CD Player Adapter For Car 176,331 12 *
Power Supply 681,110 259 *
Solid State Tesla Coil NEW! 114,231 3
Solid State Tesla Coil/High Voltage Generator 382,112 50
Transformerless Power Supply 414,917 117 *
Voltage Inverter 300,631 51 *
Voltage Inverter II 170,497 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 540,645 182
3 Watt FM Transmitter Rae XL Tkacik 292,073 81 *
50 Watt Amplifier 456,608 74
8 Note Tune Player 112,859 12 *
8 Watt Audio Amp 324,384 67 *
Aircraft Radio Communications Receiver 228,537 49 *
Crystal Radio 133,728 53 *
Digital Volume Control 292,890 47 *
Electronic Stethoscope 268,760 141 *
FET Audio Mixer 299,419 40
FM Transmitter 928,230 418
Guitar Fuzz Effect 201,819 52 *
Microphone Mixer Anatoly I. Shikhatov 210,878 26 *
Mono To Stereo Synthesizer oRbEq 95,701 18 *
One Tube Regenerative Radio NEW! 101,029 4 *
Op Amp Radio 338,667 80 *
Single Chip AM Radio NEW! 77,570 2 *
Single Chip FM Radio NEW! 129,485 1 *
Sound Level Meter 300,574 51 *
Stereo Tube Amplifier Weslee Kinsler 229,299 15 *
Tone Control 264,614 31
Transistor Organ 159,624 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 134,839 27 *
FM Telephone Bug 199,230 57
Phone Busy Indicator 179,611 24 *
Remote Telephone Ringer 90,981 3 *
Ringing Phone Light Flasher 178,172 33 *
Simple Phone Tap Derek Tombrello 327,092 98 *
Telephone Hold Button 95,188 9
Telephone Recorder 179,891 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.