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
Friday, August 12, 2022
Solid State Tesla Coil8
Simple Touch Switch7
Yesterday
Thursday, August 11, 2022
12VDC To 120VAC Inverter35
Aircraft Radio Communications Receiver33
Of All Time 12VDC To 120VAC Inverter1,504,035
FM Transmitter993,580

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 222,169 61 *
Car Alarm Arming Horn Beep Canceller bob 132,145 6 *
Wireless Auto Tachometer 337,179 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 155,653 29 *
Parallel (Printer) Port Interface 278,825 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 440,688 63 *
3 Channel Spectrum Analyzer 215,577 20
40W Fluorescent Lamp Inverter Bart Milnes 324,720 60 *
Adjustable Strobe Light 302,460 36
Black Light 270,987 29
Colour (Sound) Organ 284,123 36
Electronic Dice NEW! 183,685 10 *
Fantastic Atom Expander 198,360 25
Flash Slave Trigger 215,217 18 *
Infa-Red Remote Control 627,410 216 *
IR Remote Extender NEW! 126,886 2 *
IR Remote Jammer Carl 259,332 110 *
IR Remote Switch NEW! 153,051 9 *
LASER Transmitter/Receiver 406,783 92
LED Chaser 438,789 83 *
LED Metronome NEW! 95,398 3 *
LED Thermometer 202,195 22 *
Light/Dark Detector 301,494 90 *
Simple Colour Organ 133,440 10 *
Strobe Light 270,172 27 *
TRIAC Light Dimmer 544,259 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 353,625 122 *
Electromagnetic Levitator NEW! 139,436 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 914,329 214 *
AC Motor Speed Controller 381,493 29 *
Air Flow Detector 246,840 54 *
Digital Keypad Combination Lock 192,145 20
Low Voltage Alarm 224,330 58 *
Pine Racecar Victory Judge 99,034 1 *
Pulse Width Modulation DC Motor Control 642,096 94
Rain Detector 299,702 112 *
Simple Lie Detector 554,477 323
Simple Polarity Tester Dudley LeRoux 160,467 13 *
Simple Servo Controller 216,199 22 *
Simple Touch Switch NEW! 164,818 5 *
Simple Two Speed Contactor DC Motor Controller 200,026 21 *
Stepper Motor Controller 736,564 120 *
Time Delay Relay 549,613 88
Time Delay Relay II jawaharlal@excite.com 240,275 39 *
Touch Switch 284,493 51 *
Video Activated Relay 117,443 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 174,999 10 *
Water Detector With Sump/Bilge Pump Controller 148,173 18 *
Wire Loop Alarm Alex Meaden 201,232 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 307,076 25 *
12VDC To 120VAC Inverter 1,504,035 690
6V to 12V Converter 518,913 121
Automatic 12V Lead Acid Battery Charger 927,710 248
Automatic Load Sensing Power Switch 162,021 16 *
Car Battery Charger 874,442 159 *
Dual Polarity Power Supply 364,965 84 *
Fixed Voltage Power Supply 305,140 52 *
High Current Power Supply 330,703 66 *
High Voltage High Current Power Supply 247,387 35 *
LASER Power Supply 289,438 28
Portable CD Player Adapter For Car 206,924 12 *
Power Supply 730,231 259 *
Solid State Tesla Coil NEW! 140,058 4
Solid State Tesla Coil/High Voltage Generator 435,456 51
Transformerless Power Supply 456,800 117 *
Voltage Inverter 331,207 51 *
Voltage Inverter II 196,443 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 578,952 182
3 Watt FM Transmitter Rae XL Tkacik 327,443 83 *
50 Watt Amplifier 500,452 74
8 Note Tune Player 136,497 12 *
8 Watt Audio Amp 365,434 67 *
Aircraft Radio Communications Receiver 270,560 49 *
Crystal Radio 154,322 53 *
Digital Volume Control 327,027 47 *
Electronic Stethoscope 308,048 142 *
FET Audio Mixer 337,118 41
FM Transmitter 993,580 420
Guitar Fuzz Effect 240,351 54 *
Microphone Mixer Anatoly I. Shikhatov 244,946 26 *
Mono To Stereo Synthesizer oRbEq 128,100 18 *
One Tube Regenerative Radio NEW! 131,343 4 *
Op Amp Radio 379,790 80 *
Single Chip AM Radio NEW! 95,283 2 *
Single Chip FM Radio NEW! 165,656 1 *
Sound Level Meter 335,607 51 *
Stereo Tube Amplifier Weslee Kinsler 262,371 15 *
Tone Control 303,620 31
Transistor Organ 193,389 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 159,475 27 *
FM Telephone Bug 231,616 57
Phone Busy Indicator 209,784 24 *
Remote Telephone Ringer 114,475 3 *
Ringing Phone Light Flasher 210,994 35 *
Simple Phone Tap Derek Tombrello 379,081 98 *
Telephone Hold Button 124,721 10
Telephone Recorder 212,042 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.