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, December 03, 2021
Time Delay Relay II10
Solid State Tesla Coil/High Voltage Generator7
Yesterday
Thursday, December 02, 2021
12VDC To 120VAC Inverter44
Op Amp Radio31
Of All Time 12VDC To 120VAC Inverter1,494,390
FM Transmitter986,783

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 219,112 61 *
Car Alarm Arming Horn Beep Canceller bob 129,614 6 *
Wireless Auto Tachometer 333,670 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 153,355 29 *
Parallel (Printer) Port Interface 274,840 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 436,611 63 *
3 Channel Spectrum Analyzer 212,115 20
40W Fluorescent Lamp Inverter Bart Milnes 321,608 60 *
Adjustable Strobe Light 298,681 36
Black Light 265,855 29
Colour (Sound) Organ 280,558 36
Electronic Dice NEW! 180,796 10 *
Fantastic Atom Expander 194,904 25
Flash Slave Trigger 211,884 18 *
Infa-Red Remote Control 623,480 216 *
IR Remote Extender NEW! 123,754 2 *
IR Remote Jammer Carl 254,566 110 *
IR Remote Switch NEW! 150,558 9 *
LASER Transmitter/Receiver 401,923 92
LED Chaser 435,042 83 *
LED Metronome NEW! 93,459 3 *
LED Thermometer 199,579 22 *
Light/Dark Detector 298,690 90 *
Simple Colour Organ 131,073 10 *
Strobe Light 266,747 27 *
TRIAC Light Dimmer 540,750 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 350,383 122 *
Electromagnetic Levitator NEW! 136,805 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 909,743 214 *
AC Motor Speed Controller 376,694 29 *
Air Flow Detector 243,996 54 *
Digital Keypad Combination Lock 189,308 20
Low Voltage Alarm 220,085 58 *
Pine Racecar Victory Judge 96,765 1 *
Pulse Width Modulation DC Motor Control 638,599 94
Rain Detector 296,817 112 *
Simple Lie Detector 551,271 323
Simple Polarity Tester Dudley LeRoux 157,661 13 *
Simple Servo Controller 213,089 22 *
Simple Touch Switch NEW! 161,889 5 *
Simple Two Speed Contactor DC Motor Controller 197,249 21 *
Stepper Motor Controller 731,176 120 *
Time Delay Relay 546,605 88
Time Delay Relay II jawaharlal@excite.com 236,653 39 *
Touch Switch 281,368 51 *
Video Activated Relay 114,960 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 172,018 10 *
Water Detector With Sump/Bilge Pump Controller 145,348 18 *
Wire Loop Alarm Alex Meaden 198,462 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 303,481 25 *
12VDC To 120VAC Inverter 1,494,390 689
6V to 12V Converter 513,946 121
Automatic 12V Lead Acid Battery Charger 921,357 248
Automatic Load Sensing Power Switch 158,967 16 *
Car Battery Charger 869,968 159 *
Dual Polarity Power Supply 361,498 84 *
Fixed Voltage Power Supply 301,726 52 *
High Current Power Supply 326,779 66 *
High Voltage High Current Power Supply 244,420 35 *
LASER Power Supply 285,795 28
Portable CD Player Adapter For Car 203,785 12 *
Power Supply 726,330 259 *
Solid State Tesla Coil NEW! 137,058 4
Solid State Tesla Coil/High Voltage Generator 430,531 50
Transformerless Power Supply 453,208 117 *
Voltage Inverter 327,022 51 *
Voltage Inverter II 193,248 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 575,511 182
3 Watt FM Transmitter Rae XL Tkacik 323,806 83 *
50 Watt Amplifier 496,877 74
8 Note Tune Player 134,128 12 *
8 Watt Audio Amp 361,559 67 *
Aircraft Radio Communications Receiver 266,772 49 *
Crystal Radio 152,322 53 *
Digital Volume Control 323,523 47 *
Electronic Stethoscope 304,048 142 *
FET Audio Mixer 333,510 41
FM Transmitter 986,783 420
Guitar Fuzz Effect 236,576 54 *
Microphone Mixer Anatoly I. Shikhatov 241,807 26 *
Mono To Stereo Synthesizer oRbEq 124,883 18 *
One Tube Regenerative Radio NEW! 127,027 4 *
Op Amp Radio 375,527 80 *
Single Chip AM Radio NEW! 93,100 2 *
Single Chip FM Radio NEW! 162,621 1 *
Sound Level Meter 332,215 51 *
Stereo Tube Amplifier Weslee Kinsler 259,338 15 *
Tone Control 299,605 31
Transistor Organ 190,122 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,915 27 *
FM Telephone Bug 228,980 57
Phone Busy Indicator 207,031 24 *
Remote Telephone Ringer 112,032 3 *
Ringing Phone Light Flasher 207,331 35 *
Simple Phone Tap Derek Tombrello 376,328 98 *
Telephone Hold Button 121,969 10
Telephone Recorder 209,390 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.