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
Wednesday, May 31, 2023
AC Motor Speed Controller20
12VDC To 120VAC Inverter18
Yesterday
Tuesday, May 30, 2023
FM Transmitter31
Video Stabilizer/MacroVision Removal27
Of All Time 12VDC To 120VAC Inverter1,515,438
FM Transmitter1,001,539

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 224,864 61 *
Car Alarm Arming Horn Beep Canceller bob 134,712 6 *
Wireless Auto Tachometer 340,585 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 158,204 29 *
Parallel (Printer) Port Interface 282,600 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 444,764 63 *
3 Channel Spectrum Analyzer 218,860 20
40W Fluorescent Lamp Inverter Bart Milnes 327,879 60 *
Adjustable Strobe Light 306,239 36
Black Light 276,374 29
Colour (Sound) Organ 287,813 36
Electronic Dice NEW! 186,789 10 *
Fantastic Atom Expander 201,077 25
Flash Slave Trigger 219,090 18 *
Infa-Red Remote Control 631,209 216 *
IR Remote Extender NEW! 130,143 2 *
IR Remote Jammer Carl 262,804 110 *
IR Remote Switch NEW! 155,659 9 *
LASER Transmitter/Receiver 411,981 92
LED Chaser 443,023 83 *
LED Metronome NEW! 97,516 3 *
LED Thermometer 204,759 22 *
Light/Dark Detector 304,056 90 *
Simple Colour Organ 135,850 11 *
Strobe Light 273,168 27 *
TRIAC Light Dimmer 548,683 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 356,832 122 *
Electromagnetic Levitator NEW! 142,257 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 918,780 214 *
AC Motor Speed Controller 386,343 29 *
Air Flow Detector 249,675 54 *
Digital Keypad Combination Lock 194,735 20
Low Voltage Alarm 227,128 58 *
Pine Racecar Victory Judge 101,233 1 *
Pulse Width Modulation DC Motor Control 645,585 94
Rain Detector 302,490 112 *
Simple Lie Detector 561,093 323
Simple Polarity Tester Dudley LeRoux 163,350 13 *
Simple Servo Controller 219,178 22 *
Simple Touch Switch NEW! 167,555 6 *
Simple Two Speed Contactor DC Motor Controller 202,739 21 *
Stepper Motor Controller 741,462 120 *
Time Delay Relay 552,849 88
Time Delay Relay II jawaharlal@excite.com 244,103 39 *
Touch Switch 287,415 51 *
Video Activated Relay 119,993 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 178,295 10 *
Water Detector With Sump/Bilge Pump Controller 150,842 18 *
Wire Loop Alarm Alex Meaden 203,878 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 311,158 25 *
12VDC To 120VAC Inverter 1,515,438 691
6V to 12V Converter 523,186 121
Automatic 12V Lead Acid Battery Charger 933,053 248
Automatic Load Sensing Power Switch 165,057 16 *
Car Battery Charger 879,745 159 *
Dual Polarity Power Supply 368,360 84 *
Fixed Voltage Power Supply 308,668 52 *
High Current Power Supply 334,771 66 *
High Voltage High Current Power Supply 250,440 35 *
LASER Power Supply 293,196 28
Portable CD Player Adapter For Car 210,096 12 *
Power Supply 734,619 259 *
Solid State Tesla Coil NEW! 143,309 4
Solid State Tesla Coil/High Voltage Generator 439,857 51
Transformerless Power Supply 460,304 117 *
Voltage Inverter 334,874 51 *
Voltage Inverter II 199,873 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 582,475 182
3 Watt FM Transmitter Rae XL Tkacik 331,369 83 *
50 Watt Amplifier 504,448 74
8 Note Tune Player 138,972 12 *
8 Watt Audio Amp 369,144 67 *
Aircraft Radio Communications Receiver 274,755 49 *
Crystal Radio 156,708 53 *
Digital Volume Control 335,703 47 *
Electronic Stethoscope 312,302 142 *
FET Audio Mixer 340,658 41
FM Transmitter 1,001,539 420
Guitar Fuzz Effect 244,097 54 *
Microphone Mixer Anatoly I. Shikhatov 248,049 26 *
Mono To Stereo Synthesizer oRbEq 131,165 18 *
One Tube Regenerative Radio NEW! 136,177 4 *
Op Amp Radio 384,323 80 *
Single Chip AM Radio NEW! 97,625 3 *
Single Chip FM Radio NEW! 169,364 1 *
Sound Level Meter 339,215 51 *
Stereo Tube Amplifier Weslee Kinsler 265,688 15 *
Tone Control 307,263 31
Transistor Organ 196,668 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 161,955 27 *
FM Telephone Bug 233,870 57
Phone Busy Indicator 212,380 24 *
Remote Telephone Ringer 116,732 3 *
Ringing Phone Light Flasher 214,784 35 *
Simple Phone Tap Derek Tombrello 381,620 98 *
Telephone Hold Button 127,342 10
Telephone Recorder 214,761 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.