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, January 19, 2019
Simple Colour Organ22
Car Battery Charger15
Yesterday
Friday, January 18, 2019
12VDC To 120VAC Inverter86
Dual Polarity Power Supply78
Of All Time 12VDC To 120VAC Inverter1,426,522
FM Transmitter943,909

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 195,072 61 *
Car Alarm Arming Horn Beep Canceller bob 106,431 6 *
Wireless Auto Tachometer 302,598 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 135,835 29 *
Parallel (Printer) Port Interface 241,459 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 398,938 63 *
3 Channel Spectrum Analyzer 190,581 20
40W Fluorescent Lamp Inverter Bart Milnes 294,940 60 *
Adjustable Strobe Light 269,693 36
Black Light 231,193 29
Colour (Sound) Organ 252,669 36
Electronic Dice NEW! 155,375 10 *
Fantastic Atom Expander 167,188 25
Flash Slave Trigger 186,396 18 *
Infa-Red Remote Control 589,172 216 *
IR Remote Extender NEW! 96,160 2 *
IR Remote Jammer Carl 230,212 110 *
IR Remote Switch NEW! 126,226 9 *
LASER Transmitter/Receiver 369,625 92
LED Chaser 412,505 83 *
LED Metronome NEW! 83,082 3 *
LED Thermometer 180,329 22 *
Light/Dark Detector 278,459 90 *
Simple Colour Organ 114,952 10 *
Strobe Light 247,541 27 *
TRIAC Light Dimmer 460,450 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 317,496 122 *
Electromagnetic Levitator NEW! 117,476 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 867,350 214 *
AC Motor Speed Controller 346,602 29 *
Air Flow Detector 224,496 54 *
Digital Keypad Combination Lock 168,304 20
Low Voltage Alarm 198,493 58 *
Pine Racecar Victory Judge 79,007 1 *
Pulse Width Modulation DC Motor Control 614,890 93
Rain Detector 278,045 112 *
Simple Lie Detector 524,606 323
Simple Polarity Tester Dudley LeRoux 132,766 13 *
Simple Servo Controller 188,993 22 *
Simple Touch Switch NEW! 143,771 5 *
Simple Two Speed Contactor DC Motor Controller 178,389 21 *
Stepper Motor Controller 697,517 120 *
Time Delay Relay 519,122 88
Time Delay Relay II jawaharlal@excite.com 210,151 39 *
Touch Switch 261,146 51 *
Video Activated Relay 98,397 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 150,803 10 *
Water Detector With Sump/Bilge Pump Controller 123,972 18 *
Wire Loop Alarm Alex Meaden 180,737 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 274,744 25 *
12VDC To 120VAC Inverter 1,426,522 688
6V to 12V Converter 457,405 121
Automatic 12V Lead Acid Battery Charger 880,933 246
Automatic Load Sensing Power Switch 137,076 16 *
Car Battery Charger 834,241 159 *
Dual Polarity Power Supply 342,295 84 *
Fixed Voltage Power Supply 281,261 52 *
High Current Power Supply 299,363 65 *
High Voltage High Current Power Supply 224,780 35 *
LASER Power Supply 257,792 28
Portable CD Player Adapter For Car 182,932 12 *
Power Supply 694,478 259 *
Solid State Tesla Coil NEW! 121,761 4
Solid State Tesla Coil/High Voltage Generator 394,785 50
Transformerless Power Supply 423,000 117 *
Voltage Inverter 307,027 51 *
Voltage Inverter II 175,623 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 550,558 182
3 Watt FM Transmitter Rae XL Tkacik 299,915 82 *
50 Watt Amplifier 468,922 74
8 Note Tune Player 117,701 12 *
8 Watt Audio Amp 333,608 67 *
Aircraft Radio Communications Receiver 237,256 49 *
Crystal Radio 138,842 53 *
Digital Volume Control 300,031 47 *
Electronic Stethoscope 277,855 141 *
FET Audio Mixer 309,353 41
FM Transmitter 943,909 419
Guitar Fuzz Effect 210,311 52 *
Microphone Mixer Anatoly I. Shikhatov 218,446 26 *
Mono To Stereo Synthesizer oRbEq 102,515 18 *
One Tube Regenerative Radio NEW! 107,789 4 *
Op Amp Radio 348,592 80 *
Single Chip AM Radio NEW! 82,189 2 *
Single Chip FM Radio NEW! 137,676 1 *
Sound Level Meter 308,214 51 *
Stereo Tube Amplifier Weslee Kinsler 235,915 15 *
Tone Control 272,464 31
Transistor Organ 166,522 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 139,615 27 *
FM Telephone Bug 206,746 57
Phone Busy Indicator 187,623 24 *
Remote Telephone Ringer 95,404 3 *
Ringing Phone Light Flasher 184,942 34 *
Simple Phone Tap Derek Tombrello 333,656 98 *
Telephone Hold Button 100,892 10
Telephone Recorder 186,045 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.