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
Monday, March 20, 2023
12VDC To 120VAC Inverter38
FM Transmitter33
Yesterday
Sunday, March 19, 2023
12VDC To 120VAC Inverter45
Black Light25
Of All Time 12VDC To 120VAC Inverter1,512,385
FM Transmitter999,837

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 224,330 61 *
Car Alarm Arming Horn Beep Canceller bob 134,178 6 *
Wireless Auto Tachometer 339,846 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 157,729 29 *
Parallel (Printer) Port Interface 281,862 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 443,942 63 *
3 Channel Spectrum Analyzer 218,173 20
40W Fluorescent Lamp Inverter Bart Milnes 327,273 60 *
Adjustable Strobe Light 305,484 36
Black Light 275,269 29
Colour (Sound) Organ 287,085 36
Electronic Dice NEW! 186,041 10 *
Fantastic Atom Expander 200,533 25
Flash Slave Trigger 218,446 18 *
Infa-Red Remote Control 630,467 216 *
IR Remote Extender NEW! 129,317 2 *
IR Remote Jammer Carl 262,129 110 *
IR Remote Switch NEW! 155,072 9 *
LASER Transmitter/Receiver 411,031 92
LED Chaser 442,328 83 *
LED Metronome NEW! 97,109 3 *
LED Thermometer 204,258 22 *
Light/Dark Detector 303,537 90 *
Simple Colour Organ 135,357 11 *
Strobe Light 272,639 27 *
TRIAC Light Dimmer 547,789 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 356,132 122 *
Electromagnetic Levitator NEW! 141,567 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 917,866 214 *
AC Motor Speed Controller 385,180 29 *
Air Flow Detector 249,137 54 *
Digital Keypad Combination Lock 194,185 20
Low Voltage Alarm 226,608 58 *
Pine Racecar Victory Judge 100,817 1 *
Pulse Width Modulation DC Motor Control 644,911 94
Rain Detector 301,936 112 *
Simple Lie Detector 560,333 323
Simple Polarity Tester Dudley LeRoux 162,783 13 *
Simple Servo Controller 218,516 22 *
Simple Touch Switch NEW! 166,973 6 *
Simple Two Speed Contactor DC Motor Controller 202,157 21 *
Stepper Motor Controller 740,455 120 *
Time Delay Relay 552,196 88
Time Delay Relay II jawaharlal@excite.com 243,288 39 *
Touch Switch 286,838 51 *
Video Activated Relay 119,503 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 177,533 10 *
Water Detector With Sump/Bilge Pump Controller 150,287 18 *
Wire Loop Alarm Alex Meaden 203,331 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 310,124 25 *
12VDC To 120VAC Inverter 1,512,385 691
6V to 12V Converter 522,289 121
Automatic 12V Lead Acid Battery Charger 932,030 248
Automatic Load Sensing Power Switch 164,423 16 *
Car Battery Charger 878,926 159 *
Dual Polarity Power Supply 367,641 84 *
Fixed Voltage Power Supply 307,972 52 *
High Current Power Supply 333,869 66 *
High Voltage High Current Power Supply 249,829 35 *
LASER Power Supply 292,413 28
Portable CD Player Adapter For Car 209,482 12 *
Power Supply 733,362 259 *
Solid State Tesla Coil NEW! 142,539 4
Solid State Tesla Coil/High Voltage Generator 438,991 51
Transformerless Power Supply 459,562 117 *
Voltage Inverter 333,982 51 *
Voltage Inverter II 199,200 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 581,768 182
3 Watt FM Transmitter Rae XL Tkacik 330,300 83 *
50 Watt Amplifier 503,622 74
8 Note Tune Player 138,457 12 *
8 Watt Audio Amp 368,269 67 *
Aircraft Radio Communications Receiver 273,864 49 *
Crystal Radio 156,257 53 *
Digital Volume Control 334,992 47 *
Electronic Stethoscope 311,448 142 *
FET Audio Mixer 339,916 41
FM Transmitter 999,837 420
Guitar Fuzz Effect 243,326 54 *
Microphone Mixer Anatoly I. Shikhatov 247,386 26 *
Mono To Stereo Synthesizer oRbEq 130,500 18 *
One Tube Regenerative Radio NEW! 134,962 4 *
Op Amp Radio 383,236 80 *
Single Chip AM Radio NEW! 97,106 3 *
Single Chip FM Radio NEW! 168,500 1 *
Sound Level Meter 338,484 51 *
Stereo Tube Amplifier Weslee Kinsler 264,972 15 *
Tone Control 306,507 31
Transistor Organ 195,952 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 161,482 27 *
FM Telephone Bug 233,422 57
Phone Busy Indicator 211,894 24 *
Remote Telephone Ringer 116,295 3 *
Ringing Phone Light Flasher 213,765 35 *
Simple Phone Tap Derek Tombrello 381,124 98 *
Telephone Hold Button 126,835 10
Telephone Recorder 214,226 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.