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
Saturday, April 17, 2021
12VDC To 120VAC Inverter40
12VDC Fluorescent Lamp Driver39
Yesterday
Friday, April 16, 2021
12VDC Fluorescent Lamp Driver80
12VDC To 120VAC Inverter77
Of All Time 12VDC To 120VAC Inverter1,483,994
FM Transmitter978,071

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 215,902 61 *
Car Alarm Arming Horn Beep Canceller bob 126,809 6 *
Wireless Auto Tachometer 329,786 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 150,842 29 *
Parallel (Printer) Port Interface 270,615 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 431,817 63 *
3 Channel Spectrum Analyzer 208,845 20
40W Fluorescent Lamp Inverter Bart Milnes 318,250 60 *
Adjustable Strobe Light 294,802 36
Black Light 260,602 29
Colour (Sound) Organ 276,988 36
Electronic Dice NEW! 177,519 10 *
Fantastic Atom Expander 191,145 25
Flash Slave Trigger 208,284 18 *
Infa-Red Remote Control 619,492 216 *
IR Remote Extender NEW! 120,199 2 *
IR Remote Jammer Carl 250,343 110 *
IR Remote Switch NEW! 147,656 9 *
LASER Transmitter/Receiver 397,001 92
LED Chaser 431,687 83 *
LED Metronome NEW! 91,725 3 *
LED Thermometer 197,038 22 *
Light/Dark Detector 295,726 90 *
Simple Colour Organ 128,811 10 *
Strobe Light 263,622 27 *
TRIAC Light Dimmer 537,674 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 346,860 122 *
Electromagnetic Levitator NEW! 134,007 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 904,747 214 *
AC Motor Speed Controller 372,364 29 *
Air Flow Detector 241,315 54 *
Digital Keypad Combination Lock 186,602 20
Low Voltage Alarm 216,540 58 *
Pine Racecar Victory Judge 94,530 1 *
Pulse Width Modulation DC Motor Control 635,093 94
Rain Detector 293,988 112 *
Simple Lie Detector 547,620 323
Simple Polarity Tester Dudley LeRoux 154,494 13 *
Simple Servo Controller 209,803 22 *
Simple Touch Switch NEW! 159,230 5 *
Simple Two Speed Contactor DC Motor Controller 194,465 21 *
Stepper Motor Controller 726,587 120 *
Time Delay Relay 543,300 88
Time Delay Relay II jawaharlal@excite.com 232,957 39 *
Touch Switch 278,532 51 *
Video Activated Relay 112,527 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 168,984 10 *
Water Detector With Sump/Bilge Pump Controller 142,056 18 *
Wire Loop Alarm Alex Meaden 195,897 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 299,951 25 *
12VDC To 120VAC Inverter 1,483,994 689
6V to 12V Converter 509,153 121
Automatic 12V Lead Acid Battery Charger 916,126 248
Automatic Load Sensing Power Switch 155,473 16 *
Car Battery Charger 866,056 159 *
Dual Polarity Power Supply 358,497 84 *
Fixed Voltage Power Supply 298,484 52 *
High Current Power Supply 323,219 66 *
High Voltage High Current Power Supply 241,543 35 *
LASER Power Supply 282,126 28
Portable CD Player Adapter For Car 200,483 12 *
Power Supply 721,922 259 *
Solid State Tesla Coil NEW! 134,439 4
Solid State Tesla Coil/High Voltage Generator 425,603 50
Transformerless Power Supply 449,745 117 *
Voltage Inverter 322,494 51 *
Voltage Inverter II 190,536 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 571,944 182
3 Watt FM Transmitter Rae XL Tkacik 320,102 83 *
50 Watt Amplifier 493,309 74
8 Note Tune Player 131,756 12 *
8 Watt Audio Amp 357,766 67 *
Aircraft Radio Communications Receiver 263,289 49 *
Crystal Radio 150,575 53 *
Digital Volume Control 320,183 47 *
Electronic Stethoscope 300,186 142 *
FET Audio Mixer 329,823 41
FM Transmitter 978,071 420
Guitar Fuzz Effect 232,826 54 *
Microphone Mixer Anatoly I. Shikhatov 238,739 26 *
Mono To Stereo Synthesizer oRbEq 121,679 18 *
One Tube Regenerative Radio NEW! 123,857 4 *
Op Amp Radio 371,532 80 *
Single Chip AM Radio NEW! 91,157 2 *
Single Chip FM Radio NEW! 159,315 1 *
Sound Level Meter 329,115 51 *
Stereo Tube Amplifier Weslee Kinsler 256,240 15 *
Tone Control 295,526 31
Transistor Organ 186,883 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 154,307 27 *
FM Telephone Bug 226,505 57
Phone Busy Indicator 204,414 24 *
Remote Telephone Ringer 109,608 3 *
Ringing Phone Light Flasher 203,746 35 *
Simple Phone Tap Derek Tombrello 373,611 98 *
Telephone Hold Button 119,347 10
Telephone Recorder 206,469 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.