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
Tuesday, February 25, 2020
12VDC Fluorescent Lamp Driver31
Automatic Headlight Brightness Switch26
Yesterday
Monday, February 24, 2020
12VDC Fluorescent Lamp Driver106
IR Remote Switch67
Of All Time 12VDC To 120VAC Inverter1,458,061
FM Transmitter963,457

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 204,954 61 *
Car Alarm Arming Horn Beep Canceller bob 116,007 6 *
Wireless Auto Tachometer 317,419 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 143,218 29 *
Parallel (Printer) Port Interface 257,432 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 414,969 63 *
3 Channel Spectrum Analyzer 199,666 20
40W Fluorescent Lamp Inverter Bart Milnes 306,818 60 *
Adjustable Strobe Light 281,758 36
Black Light 245,748 29
Colour (Sound) Organ 264,313 36
Electronic Dice NEW! 166,342 10 *
Fantastic Atom Expander 178,698 25
Flash Slave Trigger 196,671 18 *
Infa-Red Remote Control 604,418 216 *
IR Remote Extender NEW! 107,807 2 *
IR Remote Jammer Carl 239,692 110 *
IR Remote Switch NEW! 136,878 9 *
LASER Transmitter/Receiver 382,894 92
LED Chaser 422,359 83 *
LED Metronome NEW! 87,656 3 *
LED Thermometer 188,716 22 *
Light/Dark Detector 286,787 90 *
Simple Colour Organ 121,380 10 *
Strobe Light 255,200 27 *
TRIAC Light Dimmer 476,393 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 330,709 122 *
Electromagnetic Levitator NEW! 125,663 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 888,014 214 *
AC Motor Speed Controller 361,153 29 *
Air Flow Detector 232,646 54 *
Digital Keypad Combination Lock 178,322 20
Low Voltage Alarm 207,501 58 *
Pine Racecar Victory Judge 87,323 1 *
Pulse Width Modulation DC Motor Control 625,298 94
Rain Detector 285,956 112 *
Simple Lie Detector 537,780 323
Simple Polarity Tester Dudley LeRoux 143,233 13 *
Simple Servo Controller 201,185 22 *
Simple Touch Switch NEW! 151,189 5 *
Simple Two Speed Contactor DC Motor Controller 186,348 21 *
Stepper Motor Controller 713,098 120 *
Time Delay Relay 532,806 88
Time Delay Relay II jawaharlal@excite.com 221,428 39 *
Touch Switch 269,533 51 *
Video Activated Relay 105,119 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 160,231 10 *
Water Detector With Sump/Bilge Pump Controller 131,223 18 *
Wire Loop Alarm Alex Meaden 188,036 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 289,528 25 *
12VDC To 120VAC Inverter 1,458,061 689
6V to 12V Converter 484,424 121
Automatic 12V Lead Acid Battery Charger 901,090 247
Automatic Load Sensing Power Switch 146,026 16 *
Car Battery Charger 852,454 159 *
Dual Polarity Power Supply 352,313 84 *
Fixed Voltage Power Supply 289,714 52 *
High Current Power Supply 312,075 65 *
High Voltage High Current Power Supply 232,910 35 *
LASER Power Supply 272,427 28
Portable CD Player Adapter For Car 191,318 12 *
Power Supply 710,391 259 *
Solid State Tesla Coil NEW! 128,501 4
Solid State Tesla Coil/High Voltage Generator 411,664 50
Transformerless Power Supply 439,310 117 *
Voltage Inverter 314,524 51 *
Voltage Inverter II 182,612 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 561,144 182
3 Watt FM Transmitter Rae XL Tkacik 310,337 82 *
50 Watt Amplifier 482,511 74
8 Note Tune Player 124,185 12 *
8 Watt Audio Amp 346,723 67 *
Aircraft Radio Communications Receiver 253,576 49 *
Crystal Radio 145,981 53 *
Digital Volume Control 310,817 47 *
Electronic Stethoscope 288,883 141 *
FET Audio Mixer 319,337 41
FM Transmitter 963,457 419
Guitar Fuzz Effect 223,006 52 *
Microphone Mixer Anatoly I. Shikhatov 229,744 26 *
Mono To Stereo Synthesizer oRbEq 112,646 18 *
One Tube Regenerative Radio NEW! 117,401 4 *
Op Amp Radio 359,603 80 *
Single Chip AM Radio NEW! 87,036 2 *
Single Chip FM Radio NEW! 150,017 1 *
Sound Level Meter 320,243 51 *
Stereo Tube Amplifier Weslee Kinsler 247,483 15 *
Tone Control 284,986 31
Transistor Organ 177,023 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 146,546 27 *
FM Telephone Bug 218,281 57
Phone Busy Indicator 197,107 24 *
Remote Telephone Ringer 101,691 3 *
Ringing Phone Light Flasher 194,322 35 *
Simple Phone Tap Derek Tombrello 348,257 98 *
Telephone Hold Button 111,544 10
Telephone Recorder 196,655 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.