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
Sunday, October 17, 2021
12VDC To 120VAC Inverter37
Op Amp Radio29
Yesterday
Saturday, October 16, 2021
12VDC To 120VAC Inverter54
Voltage Inverter27
Of All Time 12VDC To 120VAC Inverter1,492,526
FM Transmitter983,045

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 218,592 61 *
Car Alarm Arming Horn Beep Canceller bob 129,199 6 *
Wireless Auto Tachometer 332,971 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,889 29 *
Parallel (Printer) Port Interface 274,199 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 435,855 63 *
3 Channel Spectrum Analyzer 211,608 20
40W Fluorescent Lamp Inverter Bart Milnes 321,052 60 *
Adjustable Strobe Light 297,972 36
Black Light 264,958 29
Colour (Sound) Organ 279,952 36
Electronic Dice NEW! 180,266 10 *
Fantastic Atom Expander 194,127 25
Flash Slave Trigger 211,285 18 *
Infa-Red Remote Control 622,768 216 *
IR Remote Extender NEW! 123,129 2 *
IR Remote Jammer Carl 253,899 110 *
IR Remote Switch NEW! 150,120 9 *
LASER Transmitter/Receiver 401,102 92
LED Chaser 434,381 83 *
LED Metronome NEW! 93,122 3 *
LED Thermometer 199,160 22 *
Light/Dark Detector 298,097 90 *
Simple Colour Organ 130,668 10 *
Strobe Light 266,191 27 *
TRIAC Light Dimmer 540,146 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 349,734 122 *
Electromagnetic Levitator NEW! 136,374 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 908,876 214 *
AC Motor Speed Controller 375,941 29 *
Air Flow Detector 243,540 54 *
Digital Keypad Combination Lock 188,829 20
Low Voltage Alarm 219,272 58 *
Pine Racecar Victory Judge 96,370 1 *
Pulse Width Modulation DC Motor Control 637,987 94
Rain Detector 296,279 112 *
Simple Lie Detector 550,638 323
Simple Polarity Tester Dudley LeRoux 157,120 13 *
Simple Servo Controller 212,411 22 *
Simple Touch Switch NEW! 161,429 5 *
Simple Two Speed Contactor DC Motor Controller 196,783 21 *
Stepper Motor Controller 730,224 120 *
Time Delay Relay 545,994 88
Time Delay Relay II jawaharlal@excite.com 235,995 39 *
Touch Switch 280,843 51 *
Video Activated Relay 114,499 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 171,509 10 *
Water Detector With Sump/Bilge Pump Controller 144,849 18 *
Wire Loop Alarm Alex Meaden 198,002 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 302,799 25 *
12VDC To 120VAC Inverter 1,492,526 689
6V to 12V Converter 513,058 121
Automatic 12V Lead Acid Battery Charger 920,258 248
Automatic Load Sensing Power Switch 158,216 16 *
Car Battery Charger 869,178 159 *
Dual Polarity Power Supply 360,952 84 *
Fixed Voltage Power Supply 301,143 52 *
High Current Power Supply 326,195 66 *
High Voltage High Current Power Supply 243,915 35 *
LASER Power Supply 285,155 28
Portable CD Player Adapter For Car 203,232 12 *
Power Supply 725,629 259 *
Solid State Tesla Coil NEW! 136,535 4
Solid State Tesla Coil/High Voltage Generator 429,776 50
Transformerless Power Supply 452,571 117 *
Voltage Inverter 325,903 51 *
Voltage Inverter II 192,769 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 574,790 182
3 Watt FM Transmitter Rae XL Tkacik 323,055 83 *
50 Watt Amplifier 496,190 74
8 Note Tune Player 133,685 12 *
8 Watt Audio Amp 360,786 67 *
Aircraft Radio Communications Receiver 266,173 49 *
Crystal Radio 151,968 53 *
Digital Volume Control 322,896 47 *
Electronic Stethoscope 303,448 142 *
FET Audio Mixer 332,781 41
FM Transmitter 983,045 420
Guitar Fuzz Effect 235,940 54 *
Microphone Mixer Anatoly I. Shikhatov 241,290 26 *
Mono To Stereo Synthesizer oRbEq 124,357 18 *
One Tube Regenerative Radio NEW! 126,337 4 *
Op Amp Radio 374,764 80 *
Single Chip AM Radio NEW! 92,735 2 *
Single Chip FM Radio NEW! 162,046 1 *
Sound Level Meter 331,633 51 *
Stereo Tube Amplifier Weslee Kinsler 258,728 15 *
Tone Control 298,686 31
Transistor Organ 189,504 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,440 27 *
FM Telephone Bug 228,528 57
Phone Busy Indicator 206,508 24 *
Remote Telephone Ringer 111,649 3 *
Ringing Phone Light Flasher 206,559 35 *
Simple Phone Tap Derek Tombrello 375,864 98 *
Telephone Hold Button 121,548 10
Telephone Recorder 208,870 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.