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
Friday, July 23, 2021
Simple Lie Detector309
Parallel (Printer) Port Interface23
Yesterday
Thursday, July 22, 2021
12VDC To 120VAC Inverter59
6V to 12V Converter28
Of All Time 12VDC To 120VAC Inverter1,489,429
FM Transmitter980,870

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 217,696 61 *
Car Alarm Arming Horn Beep Canceller bob 128,460 6 *
Wireless Auto Tachometer 331,775 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,189 29 *
Parallel (Printer) Port Interface 273,019 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 434,460 63 *
3 Channel Spectrum Analyzer 210,572 20
40W Fluorescent Lamp Inverter Bart Milnes 320,152 60 *
Adjustable Strobe Light 296,891 36
Black Light 263,368 29
Colour (Sound) Organ 278,905 36
Electronic Dice NEW! 179,421 10 *
Fantastic Atom Expander 193,089 25
Flash Slave Trigger 210,158 18 *
Infa-Red Remote Control 621,611 216 *
IR Remote Extender NEW! 122,118 2 *
IR Remote Jammer Carl 252,165 110 *
IR Remote Switch NEW! 149,367 9 *
LASER Transmitter/Receiver 399,735 92
LED Chaser 433,336 83 *
LED Metronome NEW! 92,506 3 *
LED Thermometer 198,373 22 *
Light/Dark Detector 297,184 90 *
Simple Colour Organ 130,025 10 *
Strobe Light 265,116 27 *
TRIAC Light Dimmer 539,138 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 348,757 122 *
Electromagnetic Levitator NEW! 135,375 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 907,334 214 *
AC Motor Speed Controller 374,505 29 *
Air Flow Detector 242,770 54 *
Digital Keypad Combination Lock 188,023 20
Low Voltage Alarm 218,230 58 *
Pine Racecar Victory Judge 95,700 1 *
Pulse Width Modulation DC Motor Control 636,858 94
Rain Detector 295,350 112 *
Simple Lie Detector 549,544 323
Simple Polarity Tester Dudley LeRoux 156,281 13 *
Simple Servo Controller 211,350 22 *
Simple Touch Switch NEW! 160,564 5 *
Simple Two Speed Contactor DC Motor Controller 195,849 21 *
Stepper Motor Controller 728,744 120 *
Time Delay Relay 544,927 88
Time Delay Relay II jawaharlal@excite.com 234,935 39 *
Touch Switch 279,988 51 *
Video Activated Relay 113,812 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 170,582 10 *
Water Detector With Sump/Bilge Pump Controller 143,801 18 *
Wire Loop Alarm Alex Meaden 197,245 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 301,691 25 *
12VDC To 120VAC Inverter 1,489,429 689
6V to 12V Converter 511,396 121
Automatic 12V Lead Acid Battery Charger 918,638 248
Automatic Load Sensing Power Switch 157,184 16 *
Car Battery Charger 867,989 159 *
Dual Polarity Power Supply 359,920 84 *
Fixed Voltage Power Supply 300,078 52 *
High Current Power Supply 325,023 66 *
High Voltage High Current Power Supply 243,010 35 *
LASER Power Supply 284,090 28
Portable CD Player Adapter For Car 202,164 12 *
Power Supply 724,366 259 *
Solid State Tesla Coil NEW! 135,623 4
Solid State Tesla Coil/High Voltage Generator 428,125 50
Transformerless Power Supply 451,478 117 *
Voltage Inverter 324,337 51 *
Voltage Inverter II 191,987 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 573,629 182
3 Watt FM Transmitter Rae XL Tkacik 321,904 83 *
50 Watt Amplifier 495,019 74
8 Note Tune Player 132,984 12 *
8 Watt Audio Amp 359,587 67 *
Aircraft Radio Communications Receiver 265,058 49 *
Crystal Radio 151,354 53 *
Digital Volume Control 321,876 47 *
Electronic Stethoscope 302,148 142 *
FET Audio Mixer 331,668 41
FM Transmitter 980,870 420
Guitar Fuzz Effect 234,593 54 *
Microphone Mixer Anatoly I. Shikhatov 240,304 26 *
Mono To Stereo Synthesizer oRbEq 123,338 18 *
One Tube Regenerative Radio NEW! 125,238 4 *
Op Amp Radio 373,434 80 *
Single Chip AM Radio NEW! 92,050 2 *
Single Chip FM Radio NEW! 161,052 1 *
Sound Level Meter 330,689 51 *
Stereo Tube Amplifier Weslee Kinsler 257,806 15 *
Tone Control 297,434 31
Transistor Organ 188,484 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 155,593 27 *
FM Telephone Bug 227,734 57
Phone Busy Indicator 205,656 24 *
Remote Telephone Ringer 110,910 3 *
Ringing Phone Light Flasher 205,338 35 *
Simple Phone Tap Derek Tombrello 374,994 98 *
Telephone Hold Button 120,777 10
Telephone Recorder 207,934 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.