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
Tuesday, September 25, 2018
Dual Polarity Power Supply113
Stepper Motor Controller83
Yesterday
Monday, September 24, 2018
Dual Polarity Power Supply112
Stepper Motor Controller86
Of All Time 12VDC To 120VAC Inverter1,418,603
FM Transmitter938,618

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 191,689 61 *
Car Alarm Arming Horn Beep Canceller bob 103,351 6 *
Wireless Auto Tachometer 298,777 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 133,771 29 *
Parallel (Printer) Port Interface 237,413 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 394,673 63 *
3 Channel Spectrum Analyzer 187,916 20
40W Fluorescent Lamp Inverter Bart Milnes 291,419 60 *
Adjustable Strobe Light 265,605 36
Black Light 227,529 29
Colour (Sound) Organ 249,315 36
Electronic Dice NEW! 152,225 10 *
Fantastic Atom Expander 163,426 25
Flash Slave Trigger 183,732 18 *
Infa-Red Remote Control 584,681 216 *
IR Remote Extender NEW! 93,253 2 *
IR Remote Jammer Carl 227,448 110 *
IR Remote Switch NEW! 123,203 9 *
LASER Transmitter/Receiver 365,560 92
LED Chaser 408,926 83 *
LED Metronome NEW! 81,906 3 *
LED Thermometer 178,026 22 *
Light/Dark Detector 276,483 90 *
Simple Colour Organ 112,517 10 *
Strobe Light 244,612 27 *
TRIAC Light Dimmer 457,269 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 313,536 122 *
Electromagnetic Levitator NEW! 114,515 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 861,483 214 *
AC Motor Speed Controller 341,700 29 *
Air Flow Detector 221,645 54 *
Digital Keypad Combination Lock 164,988 20
Low Voltage Alarm 195,336 58 *
Pine Racecar Victory Judge 76,915 1 *
Pulse Width Modulation DC Motor Control 611,944 93
Rain Detector 274,490 112 *
Simple Lie Detector 520,264 323
Simple Polarity Tester Dudley LeRoux 130,016 13 *
Simple Servo Controller 185,671 22 *
Simple Touch Switch NEW! 140,745 5 *
Simple Two Speed Contactor DC Motor Controller 176,439 21 *
Stepper Motor Controller 687,713 120 *
Time Delay Relay 515,105 88
Time Delay Relay II jawaharlal@excite.com 207,335 39 *
Touch Switch 258,290 51 *
Video Activated Relay 95,845 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 147,318 10 *
Water Detector With Sump/Bilge Pump Controller 121,502 18 *
Wire Loop Alarm Alex Meaden 178,609 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 270,623 25 *
12VDC To 120VAC Inverter 1,418,603 688
6V to 12V Converter 453,079 121
Automatic 12V Lead Acid Battery Charger 875,606 246
Automatic Load Sensing Power Switch 134,713 16 *
Car Battery Charger 828,329 159 *
Dual Polarity Power Supply 329,275 84 *
Fixed Voltage Power Supply 278,634 52 *
High Current Power Supply 296,242 65 *
High Voltage High Current Power Supply 222,205 35 *
LASER Power Supply 254,008 28
Portable CD Player Adapter For Car 180,461 12 *
Power Supply 689,735 259 *
Solid State Tesla Coil NEW! 119,060 4
Solid State Tesla Coil/High Voltage Generator 389,903 50
Transformerless Power Supply 419,759 117 *
Voltage Inverter 305,124 51 *
Voltage Inverter II 173,583 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 547,264 182
3 Watt FM Transmitter Rae XL Tkacik 296,864 82 *
50 Watt Amplifier 464,180 74
8 Note Tune Player 115,850 12 *
8 Watt Audio Amp 329,686 67 *
Aircraft Radio Communications Receiver 233,836 49 *
Crystal Radio 136,934 53 *
Digital Volume Control 297,342 47 *
Electronic Stethoscope 274,539 141 *
FET Audio Mixer 306,261 41
FM Transmitter 938,618 419
Guitar Fuzz Effect 206,580 52 *
Microphone Mixer Anatoly I. Shikhatov 215,608 26 *
Mono To Stereo Synthesizer oRbEq 99,040 18 *
One Tube Regenerative Radio NEW! 105,350 4 *
Op Amp Radio 345,432 80 *
Single Chip AM Radio NEW! 80,759 2 *
Single Chip FM Radio NEW! 134,235 1 *
Sound Level Meter 305,117 51 *
Stereo Tube Amplifier Weslee Kinsler 233,011 15 *
Tone Control 269,160 31
Transistor Organ 163,819 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 137,703 27 *
FM Telephone Bug 202,833 57
Phone Busy Indicator 184,951 24 *
Remote Telephone Ringer 93,572 3 *
Ringing Phone Light Flasher 182,649 34 *
Simple Phone Tap Derek Tombrello 331,352 98 *
Telephone Hold Button 98,097 10
Telephone Recorder 183,634 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.