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, September 28, 2023
12VDC To 120VAC Inverter44
TRIAC Light Dimmer27
Yesterday
Wednesday, September 27, 2023
12VDC To 120VAC Inverter28
AC Motor Speed Controller24
Of All Time 12VDC To 120VAC Inverter1,522,614
FM Transmitter1,004,156

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 225,966 61 *
Car Alarm Arming Horn Beep Canceller bob 135,797 6 *
Wireless Auto Tachometer 341,870 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 159,159 29 *
Parallel (Printer) Port Interface 284,223 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 446,118 63 *
3 Channel Spectrum Analyzer 220,256 20
40W Fluorescent Lamp Inverter Bart Milnes 329,057 60 *
Adjustable Strobe Light 307,656 36
Black Light 278,287 29
Colour (Sound) Organ 289,077 36
Electronic Dice NEW! 188,013 10 *
Fantastic Atom Expander 202,093 25
Flash Slave Trigger 220,272 18 *
Infa-Red Remote Control 635,679 216 *
IR Remote Extender NEW! 131,490 2 *
IR Remote Jammer Carl 264,412 110 *
IR Remote Switch NEW! 156,729 9 *
LASER Transmitter/Receiver 413,787 92
LED Chaser 444,270 83 *
LED Metronome NEW! 98,537 3 *
LED Thermometer 205,742 22 *
Light/Dark Detector 305,186 90 *
Simple Colour Organ 136,803 11 *
Strobe Light 274,265 27 *
TRIAC Light Dimmer 550,253 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 358,176 122 *
Electromagnetic Levitator NEW! 143,432 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 920,343 214 *
AC Motor Speed Controller 388,660 29 *
Air Flow Detector 250,790 54 *
Digital Keypad Combination Lock 201,422 20
Low Voltage Alarm 228,195 58 *
Pine Racecar Victory Judge 102,101 1 *
Pulse Width Modulation DC Motor Control 653,251 94
Rain Detector 303,596 112 *
Simple Lie Detector 562,545 323
Simple Polarity Tester Dudley LeRoux 164,506 13 *
Simple Servo Controller 220,283 22 *
Simple Touch Switch NEW! 168,728 6 *
Simple Two Speed Contactor DC Motor Controller 203,977 21 *
Stepper Motor Controller 743,267 120 *
Time Delay Relay 554,133 88
Time Delay Relay II jawaharlal@excite.com 245,554 39 *
Touch Switch 288,546 51 *
Video Activated Relay 121,007 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 179,588 10 *
Water Detector With Sump/Bilge Pump Controller 151,891 18 *
Wire Loop Alarm Alex Meaden 204,919 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 313,388 25 *
12VDC To 120VAC Inverter 1,522,614 691
6V to 12V Converter 525,202 121
Automatic 12V Lead Acid Battery Charger 934,860 248
Automatic Load Sensing Power Switch 166,266 16 *
Car Battery Charger 881,275 159 *
Dual Polarity Power Supply 369,678 84 *
Fixed Voltage Power Supply 309,976 52 *
High Current Power Supply 336,383 66 *
High Voltage High Current Power Supply 251,623 35 *
LASER Power Supply 294,597 28
Portable CD Player Adapter For Car 211,383 12 *
Power Supply 736,692 259 *
Solid State Tesla Coil NEW! 144,694 4
Solid State Tesla Coil/High Voltage Generator 442,112 51
Transformerless Power Supply 461,674 117 *
Voltage Inverter 336,414 51 *
Voltage Inverter II 201,231 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 583,824 182
3 Watt FM Transmitter Rae XL Tkacik 333,432 83 *
50 Watt Amplifier 505,983 74
8 Note Tune Player 139,894 12 *
8 Watt Audio Amp 370,784 67 *
Aircraft Radio Communications Receiver 276,525 49 *
Crystal Radio 157,729 53 *
Digital Volume Control 337,019 47 *
Electronic Stethoscope 319,389 142 *
FET Audio Mixer 342,096 41
FM Transmitter 1,004,156 420
Guitar Fuzz Effect 245,591 54 *
Microphone Mixer Anatoly I. Shikhatov 249,292 26 *
Mono To Stereo Synthesizer oRbEq 132,380 18 *
One Tube Regenerative Radio NEW! 138,213 4 *
Op Amp Radio 386,142 80 *
Single Chip AM Radio NEW! 98,750 3 *
Single Chip FM Radio NEW! 170,941 1 *
Sound Level Meter 340,531 51 *
Stereo Tube Amplifier Weslee Kinsler 267,027 15 *
Tone Control 308,637 31
Transistor Organ 198,158 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 162,921 27 *
FM Telephone Bug 234,874 57
Phone Busy Indicator 213,325 24 *
Remote Telephone Ringer 117,724 3 *
Ringing Phone Light Flasher 216,424 35 *
Simple Phone Tap Derek Tombrello 382,750 98 *
Telephone Hold Button 128,405 10
Telephone Recorder 215,753 55 *


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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.