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
Thursday, October 29, 2020
Automatic 12V Lead Acid Battery Charger22
Computer Controlled Frequency Counter/Logic Probe20
Yesterday
Wednesday, October 28, 2020
12VDC Fluorescent Lamp Driver46
12VDC To 120VAC Inverter46
Of All Time 12VDC To 120VAC Inverter1,472,802
FM Transmitter972,711

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 212,379 61 *
Car Alarm Arming Horn Beep Canceller bob 123,387 6 *
Wireless Auto Tachometer 325,753 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 148,335 29 *
Parallel (Printer) Port Interface 266,297 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 426,134 63 *
3 Channel Spectrum Analyzer 205,734 20
40W Fluorescent Lamp Inverter Bart Milnes 314,387 60 *
Adjustable Strobe Light 290,412 36
Black Light 255,515 29
Colour (Sound) Organ 272,503 36
Electronic Dice NEW! 173,749 10 *
Fantastic Atom Expander 186,866 25
Flash Slave Trigger 204,561 18 *
Infa-Red Remote Control 614,237 216 *
IR Remote Extender NEW! 116,335 2 *
IR Remote Jammer Carl 246,453 110 *
IR Remote Switch NEW! 144,148 9 *
LASER Transmitter/Receiver 391,916 92
LED Chaser 428,368 83 *
LED Metronome NEW! 90,407 3 *
LED Thermometer 194,218 22 *
Light/Dark Detector 292,810 90 *
Simple Colour Organ 126,461 10 *
Strobe Light 260,798 27 *
TRIAC Light Dimmer 533,916 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 342,110 122 *
Electromagnetic Levitator NEW! 131,374 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 898,534 214 *
AC Motor Speed Controller 368,283 29 *
Air Flow Detector 238,477 54 *
Digital Keypad Combination Lock 183,860 20
Low Voltage Alarm 213,320 58 *
Pine Racecar Victory Judge 92,288 1 *
Pulse Width Modulation DC Motor Control 631,642 94
Rain Detector 291,343 112 *
Simple Lie Detector 544,294 323
Simple Polarity Tester Dudley LeRoux 150,847 13 *
Simple Servo Controller 206,777 22 *
Simple Touch Switch NEW! 156,537 5 *
Simple Two Speed Contactor DC Motor Controller 191,875 21 *
Stepper Motor Controller 721,626 120 *
Time Delay Relay 539,960 88
Time Delay Relay II jawaharlal@excite.com 229,229 39 *
Touch Switch 275,621 51 *
Video Activated Relay 110,086 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 166,057 10 *
Water Detector With Sump/Bilge Pump Controller 138,666 18 *
Wire Loop Alarm Alex Meaden 193,354 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 296,353 25 *
12VDC To 120VAC Inverter 1,472,802 689
6V to 12V Converter 504,301 121
Automatic 12V Lead Acid Battery Charger 910,873 248
Automatic Load Sensing Power Switch 151,983 16 *
Car Battery Charger 861,626 159 *
Dual Polarity Power Supply 356,223 84 *
Fixed Voltage Power Supply 295,347 52 *
High Current Power Supply 319,734 66 *
High Voltage High Current Power Supply 238,651 35 *
LASER Power Supply 278,663 28
Portable CD Player Adapter For Car 197,455 12 *
Power Supply 718,143 259 *
Solid State Tesla Coil NEW! 132,228 4
Solid State Tesla Coil/High Voltage Generator 420,455 50
Transformerless Power Supply 446,159 117 *
Voltage Inverter 319,069 51 *
Voltage Inverter II 187,944 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 568,432 182
3 Watt FM Transmitter Rae XL Tkacik 316,770 83 *
50 Watt Amplifier 489,482 74
8 Note Tune Player 129,262 12 *
8 Watt Audio Amp 353,976 67 *
Aircraft Radio Communications Receiver 259,828 49 *
Crystal Radio 149,119 53 *
Digital Volume Control 316,875 47 *
Electronic Stethoscope 295,849 141 *
FET Audio Mixer 326,087 41
FM Transmitter 972,711 420
Guitar Fuzz Effect 229,337 52 *
Microphone Mixer Anatoly I. Shikhatov 235,600 26 *
Mono To Stereo Synthesizer oRbEq 118,571 18 *
One Tube Regenerative Radio NEW! 121,270 4 *
Op Amp Radio 367,533 80 *
Single Chip AM Radio NEW! 89,675 2 *
Single Chip FM Radio NEW! 156,080 1 *
Sound Level Meter 326,048 51 *
Stereo Tube Amplifier Weslee Kinsler 253,028 15 *
Tone Control 291,627 31
Transistor Organ 183,061 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 151,789 27 *
FM Telephone Bug 223,825 57
Phone Busy Indicator 202,030 24 *
Remote Telephone Ringer 107,036 3 *
Ringing Phone Light Flasher 200,459 35 *
Simple Phone Tap Derek Tombrello 370,892 98 *
Telephone Hold Button 116,713 10
Telephone Recorder 203,280 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.