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, January 27, 2021
12VDC To 120VAC Inverter63
Transformerless Power Supply62
Yesterday
Tuesday, January 26, 2021
12VDC To 120VAC Inverter70
TRIAC Light Dimmer43
Of All Time 12VDC To 120VAC Inverter1,478,942
FM Transmitter975,587

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 214,035 61 *
Car Alarm Arming Horn Beep Canceller bob 125,023 6 *
Wireless Auto Tachometer 327,769 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 149,582 29 *
Parallel (Printer) Port Interface 268,448 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 428,977 63 *
3 Channel Spectrum Analyzer 207,313 20
40W Fluorescent Lamp Inverter Bart Milnes 316,318 60 *
Adjustable Strobe Light 292,624 36
Black Light 258,112 29
Colour (Sound) Organ 274,851 36
Electronic Dice NEW! 175,681 10 *
Fantastic Atom Expander 189,056 25
Flash Slave Trigger 206,457 18 *
Infa-Red Remote Control 617,288 216 *
IR Remote Extender NEW! 118,226 2 *
IR Remote Jammer Carl 248,981 110 *
IR Remote Switch NEW! 145,869 9 *
LASER Transmitter/Receiver 394,555 92
LED Chaser 430,145 83 *
LED Metronome NEW! 91,115 3 *
LED Thermometer 195,678 22 *
Light/Dark Detector 294,287 90 *
Simple Colour Organ 127,653 10 *
Strobe Light 262,277 27 *
TRIAC Light Dimmer 536,073 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 344,852 122 *
Electromagnetic Levitator NEW! 132,692 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 901,291 214 *
AC Motor Speed Controller 370,408 29 *
Air Flow Detector 239,971 54 *
Digital Keypad Combination Lock 185,258 20
Low Voltage Alarm 214,990 58 *
Pine Racecar Victory Judge 93,399 1 *
Pulse Width Modulation DC Motor Control 633,555 94
Rain Detector 292,698 112 *
Simple Lie Detector 545,984 323
Simple Polarity Tester Dudley LeRoux 152,658 13 *
Simple Servo Controller 208,311 22 *
Simple Touch Switch NEW! 157,868 5 *
Simple Two Speed Contactor DC Motor Controller 193,172 21 *
Stepper Motor Controller 724,162 120 *
Time Delay Relay 541,704 88
Time Delay Relay II jawaharlal@excite.com 231,075 39 *
Touch Switch 277,098 51 *
Video Activated Relay 111,316 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 167,613 10 *
Water Detector With Sump/Bilge Pump Controller 140,563 18 *
Wire Loop Alarm Alex Meaden 194,628 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 298,174 25 *
12VDC To 120VAC Inverter 1,478,942 689
6V to 12V Converter 506,967 121
Automatic 12V Lead Acid Battery Charger 913,715 248
Automatic Load Sensing Power Switch 153,743 16 *
Car Battery Charger 864,008 159 *
Dual Polarity Power Supply 357,483 84 *
Fixed Voltage Power Supply 296,953 52 *
High Current Power Supply 321,557 66 *
High Voltage High Current Power Supply 240,119 35 *
LASER Power Supply 280,383 28
Portable CD Player Adapter For Car 198,939 12 *
Power Supply 720,068 259 *
Solid State Tesla Coil NEW! 133,341 4
Solid State Tesla Coil/High Voltage Generator 423,019 50
Transformerless Power Supply 448,033 117 *
Voltage Inverter 320,869 51 *
Voltage Inverter II 189,208 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 570,182 182
3 Watt FM Transmitter Rae XL Tkacik 318,435 83 *
50 Watt Amplifier 491,460 74
8 Note Tune Player 130,503 12 *
8 Watt Audio Amp 355,885 67 *
Aircraft Radio Communications Receiver 261,654 49 *
Crystal Radio 149,929 53 *
Digital Volume Control 318,535 47 *
Electronic Stethoscope 298,078 141 *
FET Audio Mixer 327,946 41
FM Transmitter 975,587 420
Guitar Fuzz Effect 231,100 52 *
Microphone Mixer Anatoly I. Shikhatov 237,159 26 *
Mono To Stereo Synthesizer oRbEq 120,103 18 *
One Tube Regenerative Radio NEW! 122,642 4 *
Op Amp Radio 369,534 80 *
Single Chip AM Radio NEW! 90,449 2 *
Single Chip FM Radio NEW! 157,672 1 *
Sound Level Meter 327,608 51 *
Stereo Tube Amplifier Weslee Kinsler 254,662 15 *
Tone Control 293,651 31
Transistor Organ 184,723 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 153,067 27 *
FM Telephone Bug 225,236 57
Phone Busy Indicator 203,255 24 *
Remote Telephone Ringer 108,316 3 *
Ringing Phone Light Flasher 202,098 35 *
Simple Phone Tap Derek Tombrello 372,272 98 *
Telephone Hold Button 118,028 10
Telephone Recorder 204,973 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.