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
Saturday, May 15, 2021
IR Remote Switch6
One Tube Regenerative Radio5
Yesterday
Friday, May 14, 2021
12VDC To 120VAC Inverter59
FM Transmitter42
Of All Time 12VDC To 120VAC Inverter1,486,222
FM Transmitter978,941

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 216,527 61 *
Car Alarm Arming Horn Beep Canceller bob 127,447 6 *
Wireless Auto Tachometer 330,481 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 151,296 29 *
Parallel (Printer) Port Interface 271,427 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 432,795 63 *
3 Channel Spectrum Analyzer 209,438 20
40W Fluorescent Lamp Inverter Bart Milnes 318,967 60 *
Adjustable Strobe Light 295,594 36
Black Light 261,582 29
Colour (Sound) Organ 277,694 36
Electronic Dice NEW! 178,209 10 *
Fantastic Atom Expander 191,875 25
Flash Slave Trigger 208,945 18 *
Infa-Red Remote Control 620,239 216 *
IR Remote Extender NEW! 120,965 2 *
IR Remote Jammer Carl 250,844 110 *
IR Remote Switch NEW! 148,304 9 *
LASER Transmitter/Receiver 397,886 92
LED Chaser 432,231 83 *
LED Metronome NEW! 91,992 3 *
LED Thermometer 197,513 22 *
Light/Dark Detector 296,217 90 *
Simple Colour Organ 129,226 10 *
Strobe Light 264,110 27 *
TRIAC Light Dimmer 538,189 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 347,551 122 *
Electromagnetic Levitator NEW! 134,484 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 905,665 214 *
AC Motor Speed Controller 373,046 29 *
Air Flow Detector 241,792 54 *
Digital Keypad Combination Lock 187,094 20
Low Voltage Alarm 217,178 58 *
Pine Racecar Victory Judge 94,954 1 *
Pulse Width Modulation DC Motor Control 635,682 94
Rain Detector 294,476 112 *
Simple Lie Detector 548,192 323
Simple Polarity Tester Dudley LeRoux 155,142 13 *
Simple Servo Controller 210,337 22 *
Simple Touch Switch NEW! 159,675 5 *
Simple Two Speed Contactor DC Motor Controller 194,922 21 *
Stepper Motor Controller 727,352 120 *
Time Delay Relay 543,822 88
Time Delay Relay II jawaharlal@excite.com 233,639 39 *
Touch Switch 279,037 51 *
Video Activated Relay 112,993 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 169,503 10 *
Water Detector With Sump/Bilge Pump Controller 142,642 18 *
Wire Loop Alarm Alex Meaden 196,394 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 300,574 25 *
12VDC To 120VAC Inverter 1,486,222 689
6V to 12V Converter 509,858 121
Automatic 12V Lead Acid Battery Charger 916,984 248
Automatic Load Sensing Power Switch 156,081 16 *
Car Battery Charger 866,694 159 *
Dual Polarity Power Supply 358,967 84 *
Fixed Voltage Power Supply 299,021 52 *
High Current Power Supply 323,806 66 *
High Voltage High Current Power Supply 242,074 35 *
LASER Power Supply 282,767 28
Portable CD Player Adapter For Car 201,058 12 *
Power Supply 722,596 259 *
Solid State Tesla Coil NEW! 134,787 4
Solid State Tesla Coil/High Voltage Generator 426,479 50
Transformerless Power Supply 450,303 117 *
Voltage Inverter 323,031 51 *
Voltage Inverter II 191,037 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 572,514 182
3 Watt FM Transmitter Rae XL Tkacik 320,696 83 *
50 Watt Amplifier 493,947 74
8 Note Tune Player 132,184 12 *
8 Watt Audio Amp 358,392 67 *
Aircraft Radio Communications Receiver 263,898 49 *
Crystal Radio 150,809 53 *
Digital Volume Control 320,757 47 *
Electronic Stethoscope 300,867 142 *
FET Audio Mixer 330,436 41
FM Transmitter 978,941 420
Guitar Fuzz Effect 233,449 54 *
Microphone Mixer Anatoly I. Shikhatov 239,298 26 *
Mono To Stereo Synthesizer oRbEq 122,239 18 *
One Tube Regenerative Radio NEW! 124,302 4 *
Op Amp Radio 372,118 80 *
Single Chip AM Radio NEW! 91,413 2 *
Single Chip FM Radio NEW! 159,936 1 *
Sound Level Meter 329,644 51 *
Stereo Tube Amplifier Weslee Kinsler 256,791 15 *
Tone Control 296,184 31
Transistor Organ 187,435 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 154,739 27 *
FM Telephone Bug 226,925 57
Phone Busy Indicator 204,801 24 *
Remote Telephone Ringer 110,034 3 *
Ringing Phone Light Flasher 204,276 35 *
Simple Phone Tap Derek Tombrello 374,073 98 *
Telephone Hold Button 119,859 10
Telephone Recorder 206,969 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.