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, August 04, 2020
6V to 12V Converter108
Infa-Red Remote Control42
Yesterday
Monday, August 03, 2020
12VDC To 120VAC Inverter126
12VDC Fluorescent Lamp Driver39
Of All Time 12VDC To 120VAC Inverter1,468,886
FM Transmitter970,616

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 210,729 61 *
Car Alarm Arming Horn Beep Canceller bob 121,857 6 *
Wireless Auto Tachometer 324,011 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 147,082 29 *
Parallel (Printer) Port Interface 264,233 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 424,138 63 *
3 Channel Spectrum Analyzer 204,082 20
40W Fluorescent Lamp Inverter Bart Milnes 312,886 60 *
Adjustable Strobe Light 288,464 36
Black Light 253,392 29
Colour (Sound) Organ 270,663 36
Electronic Dice NEW! 172,277 10 *
Fantastic Atom Expander 185,301 25
Flash Slave Trigger 202,846 18 *
Infa-Red Remote Control 612,595 216 *
IR Remote Extender NEW! 114,422 2 *
IR Remote Jammer Carl 245,116 110 *
IR Remote Switch NEW! 142,726 9 *
LASER Transmitter/Receiver 389,917 92
LED Chaser 426,965 83 *
LED Metronome NEW! 89,293 3 *
LED Thermometer 193,068 22 *
Light/Dark Detector 291,231 90 *
Simple Colour Organ 125,172 10 *
Strobe Light 259,571 27 *
TRIAC Light Dimmer 481,894 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 339,927 122 *
Electromagnetic Levitator NEW! 129,857 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 896,088 214 *
AC Motor Speed Controller 366,467 29 *
Air Flow Detector 236,987 54 *
Digital Keypad Combination Lock 182,480 20
Low Voltage Alarm 212,024 58 *
Pine Racecar Victory Judge 90,978 1 *
Pulse Width Modulation DC Motor Control 630,161 94
Rain Detector 290,147 112 *
Simple Lie Detector 542,780 323
Simple Polarity Tester Dudley LeRoux 149,474 13 *
Simple Servo Controller 205,491 22 *
Simple Touch Switch NEW! 155,144 5 *
Simple Two Speed Contactor DC Motor Controller 190,502 21 *
Stepper Motor Controller 719,430 120 *
Time Delay Relay 538,571 88
Time Delay Relay II jawaharlal@excite.com 227,802 39 *
Touch Switch 274,066 51 *
Video Activated Relay 108,977 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 164,775 10 *
Water Detector With Sump/Bilge Pump Controller 136,071 18 *
Wire Loop Alarm Alex Meaden 191,974 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 294,613 25 *
12VDC To 120VAC Inverter 1,468,886 689
6V to 12V Converter 500,204 121
Automatic 12V Lead Acid Battery Charger 908,551 247
Automatic Load Sensing Power Switch 150,508 16 *
Car Battery Charger 859,237 159 *
Dual Polarity Power Supply 355,056 84 *
Fixed Voltage Power Supply 294,053 52 *
High Current Power Supply 318,176 65 *
High Voltage High Current Power Supply 237,359 35 *
LASER Power Supply 277,244 28
Portable CD Player Adapter For Car 195,885 12 *
Power Supply 716,429 259 *
Solid State Tesla Coil NEW! 131,149 4
Solid State Tesla Coil/High Voltage Generator 418,076 50
Transformerless Power Supply 444,359 117 *
Voltage Inverter 317,688 51 *
Voltage Inverter II 186,601 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 566,540 182
3 Watt FM Transmitter Rae XL Tkacik 315,001 82 *
50 Watt Amplifier 487,889 74
8 Note Tune Player 128,121 12 *
8 Watt Audio Amp 351,974 67 *
Aircraft Radio Communications Receiver 258,398 49 *
Crystal Radio 148,096 53 *
Digital Volume Control 315,314 47 *
Electronic Stethoscope 294,074 141 *
FET Audio Mixer 324,365 41
FM Transmitter 970,616 419
Guitar Fuzz Effect 227,813 52 *
Microphone Mixer Anatoly I. Shikhatov 234,243 26 *
Mono To Stereo Synthesizer oRbEq 117,133 18 *
One Tube Regenerative Radio NEW! 119,890 4 *
Op Amp Radio 365,862 80 *
Single Chip AM Radio NEW! 88,883 2 *
Single Chip FM Radio NEW! 154,459 1 *
Sound Level Meter 324,713 51 *
Stereo Tube Amplifier Weslee Kinsler 251,704 15 *
Tone Control 289,989 31
Transistor Organ 181,681 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 150,699 27 *
FM Telephone Bug 222,376 57
Phone Busy Indicator 200,929 24 *
Remote Telephone Ringer 105,641 3 *
Ringing Phone Light Flasher 199,056 35 *
Simple Phone Tap Derek Tombrello 369,380 98 *
Telephone Hold Button 115,627 10
Telephone Recorder 201,947 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.