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, September 23, 2023
12VDC To 120VAC Inverter14
Aircraft Radio Communications Receiver10
Yesterday
Friday, September 22, 2023
FM Transmitter32
12VDC To 120VAC Inverter28
Of All Time 12VDC To 120VAC Inverter1,522,401
FM Transmitter1,004,012

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 225,924 61 *
Car Alarm Arming Horn Beep Canceller bob 135,755 6 *
Wireless Auto Tachometer 341,816 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 159,126 29 *
Parallel (Printer) Port Interface 284,166 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 446,062 63 *
3 Channel Spectrum Analyzer 220,195 20
40W Fluorescent Lamp Inverter Bart Milnes 328,988 60 *
Adjustable Strobe Light 307,597 36
Black Light 278,197 29
Colour (Sound) Organ 289,024 36
Electronic Dice NEW! 187,956 10 *
Fantastic Atom Expander 202,046 25
Flash Slave Trigger 220,232 18 *
Infa-Red Remote Control 635,624 216 *
IR Remote Extender NEW! 131,436 2 *
IR Remote Jammer Carl 264,360 110 *
IR Remote Switch NEW! 156,678 9 *
LASER Transmitter/Receiver 413,707 92
LED Chaser 444,222 83 *
LED Metronome NEW! 98,498 3 *
LED Thermometer 205,707 22 *
Light/Dark Detector 305,136 90 *
Simple Colour Organ 136,768 11 *
Strobe Light 274,236 27 *
TRIAC Light Dimmer 550,169 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 358,120 122 *
Electromagnetic Levitator NEW! 143,396 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 920,273 214 *
AC Motor Speed Controller 388,552 29 *
Air Flow Detector 250,745 54 *
Digital Keypad Combination Lock 201,394 20
Low Voltage Alarm 228,159 58 *
Pine Racecar Victory Judge 102,068 1 *
Pulse Width Modulation DC Motor Control 653,197 94
Rain Detector 303,566 112 *
Simple Lie Detector 562,473 323
Simple Polarity Tester Dudley LeRoux 164,459 13 *
Simple Servo Controller 220,250 22 *
Simple Touch Switch NEW! 168,686 6 *
Simple Two Speed Contactor DC Motor Controller 203,937 21 *
Stepper Motor Controller 743,201 120 *
Time Delay Relay 554,092 88
Time Delay Relay II jawaharlal@excite.com 245,483 39 *
Touch Switch 288,506 51 *
Video Activated Relay 120,961 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 179,530 10 *
Water Detector With Sump/Bilge Pump Controller 151,854 18 *
Wire Loop Alarm Alex Meaden 204,871 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 313,289 25 *
12VDC To 120VAC Inverter 1,522,401 691
6V to 12V Converter 525,121 121
Automatic 12V Lead Acid Battery Charger 934,776 248
Automatic Load Sensing Power Switch 166,200 16 *
Car Battery Charger 881,206 159 *
Dual Polarity Power Supply 369,615 84 *
Fixed Voltage Power Supply 309,917 52 *
High Current Power Supply 336,311 66 *
High Voltage High Current Power Supply 251,565 35 *
LASER Power Supply 294,538 28
Portable CD Player Adapter For Car 211,337 12 *
Power Supply 736,629 259 *
Solid State Tesla Coil NEW! 144,627 4
Solid State Tesla Coil/High Voltage Generator 442,027 51
Transformerless Power Supply 461,594 117 *
Voltage Inverter 336,354 51 *
Voltage Inverter II 201,152 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 583,768 182
3 Watt FM Transmitter Rae XL Tkacik 333,358 83 *
50 Watt Amplifier 505,919 74
8 Note Tune Player 139,863 12 *
8 Watt Audio Amp 370,691 67 *
Aircraft Radio Communications Receiver 276,448 49 *
Crystal Radio 157,670 53 *
Digital Volume Control 336,942 47 *
Electronic Stethoscope 319,316 142 *
FET Audio Mixer 342,032 41
FM Transmitter 1,004,012 420
Guitar Fuzz Effect 245,519 54 *
Microphone Mixer Anatoly I. Shikhatov 249,239 26 *
Mono To Stereo Synthesizer oRbEq 132,328 18 *
One Tube Regenerative Radio NEW! 138,132 4 *
Op Amp Radio 386,048 80 *
Single Chip AM Radio NEW! 98,680 3 *
Single Chip FM Radio NEW! 170,888 1 *
Sound Level Meter 340,480 51 *
Stereo Tube Amplifier Weslee Kinsler 266,964 15 *
Tone Control 308,582 31
Transistor Organ 198,107 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 162,890 27 *
FM Telephone Bug 234,835 57
Phone Busy Indicator 213,292 24 *
Remote Telephone Ringer 117,690 3 *
Ringing Phone Light Flasher 216,378 35 *
Simple Phone Tap Derek Tombrello 382,697 98 *
Telephone Hold Button 128,364 10
Telephone Recorder 215,711 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.