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, December 04, 2016
Automatic 12V Lead Acid Battery Charger11
Power Supply10
Yesterday
Saturday, December 03, 2016
12VDC To 120VAC Inverter99
Automatic 12V Lead Acid Battery Charger86
Of All Time 12VDC To 120VAC Inverter1,361,786
FM Transmitter909,495

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 180,812 61 *
Car Alarm Arming Horn Beep Canceller bob 94,319 6 *
Wireless Auto Tachometer 287,315 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 124,744 29 *
Parallel (Printer) Port Interface 226,991 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 379,138 62 *
3 Channel Spectrum Analyzer 172,962 20
40W Fluorescent Lamp Inverter Bart Milnes 279,163 60 *
Adjustable Strobe Light 250,625 36
Black Light 212,995 29
Colour (Sound) Organ 235,577 36
Electronic Dice NEW! 141,713 9 *
Fantastic Atom Expander 150,700 25
Flash Slave Trigger 172,411 17 *
Infa-Red Remote Control 566,557 216 *
IR Remote Extender NEW! 81,561 2 *
IR Remote Jammer Carl 213,661 110 *
IR Remote Switch NEW! 112,369 9 *
LASER Transmitter/Receiver 350,170 92
LED Chaser 393,257 83 *
LED Metronome NEW! 73,121 3 *
LED Thermometer 166,164 22 *
Light/Dark Detector 262,498 89 *
Simple Colour Organ 103,246 10 *
Strobe Light 233,639 27 *
TRIAC Light Dimmer 440,150 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 302,199 122 *
Electromagnetic Levitator NEW! 102,090 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 836,006 214 *
AC Motor Speed Controller 320,705 29 *
Air Flow Detector 208,794 54 *
Digital Keypad Combination Lock 154,081 20
Low Voltage Alarm 180,683 58 *
Pine Racecar Victory Judge 68,226 1 *
Pulse Width Modulation DC Motor Control 593,349 93
Rain Detector 261,565 112 *
Simple Lie Detector 502,266 323
Simple Polarity Tester Dudley LeRoux 118,267 13 *
Simple Servo Controller 174,201 22 *
Simple Touch Switch NEW! 129,556 5 *
Simple Two Speed Contactor DC Motor Controller 166,536 21 *
Stepper Motor Controller 653,946 120 *
Time Delay Relay 493,978 88
Time Delay Relay II jawaharlal@excite.com 194,347 39 *
Touch Switch 245,615 51 *
Video Activated Relay 85,497 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 136,563 10 *
Water Detector With Sump/Bilge Pump Controller 111,597 18 *
Wire Loop Alarm Alex Meaden 168,016 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 250,566 25 *
12VDC To 120VAC Inverter 1,361,786 687
6V to 12V Converter 427,284 121
Automatic 12V Lead Acid Battery Charger 838,970 246
Automatic Load Sensing Power Switch 123,107 15 *
Car Battery Charger 796,925 159 *
Dual Polarity Power Supply 287,335 84 *
Fixed Voltage Power Supply 266,358 52 *
High Current Power Supply 282,112 64 *
High Voltage High Current Power Supply 211,057 35 *
LASER Power Supply 239,001 28
Portable CD Player Adapter For Car 167,245 12 *
Power Supply 664,553 259 *
Solid State Tesla Coil NEW! 106,453 3
Solid State Tesla Coil/High Voltage Generator 366,464 50
Transformerless Power Supply 404,600 117 *
Voltage Inverter 290,663 51 *
Voltage Inverter II 165,553 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 527,239 182
3 Watt FM Transmitter Rae XL Tkacik 282,165 81 *
50 Watt Amplifier 442,780 74
8 Note Tune Player 106,779 12 *
8 Watt Audio Amp 312,639 67 *
Aircraft Radio Communications Receiver 217,939 49 *
Crystal Radio 127,361 53 *
Digital Volume Control 283,360 47 *
Electronic Stethoscope 257,170 141 *
FET Audio Mixer 287,487 40
FM Transmitter 909,495 418
Guitar Fuzz Effect 192,888 52 *
Microphone Mixer Anatoly I. Shikhatov 201,077 26 *
Mono To Stereo Synthesizer oRbEq 89,438 18 *
One Tube Regenerative Radio NEW! 92,493 4 *
Op Amp Radio 325,995 80 *
Single Chip AM Radio NEW! 71,700 2 *
Single Chip FM Radio NEW! 119,420 1 *
Sound Level Meter 292,146 51 *
Stereo Tube Amplifier Weslee Kinsler 221,599 15 *
Tone Control 253,871 31
Transistor Organ 152,296 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 129,732 27 *
FM Telephone Bug 192,981 57
Phone Busy Indicator 167,860 24 *
Remote Telephone Ringer 86,244 3 *
Ringing Phone Light Flasher 169,651 33 *
Simple Phone Tap Derek Tombrello 320,626 98 *
Telephone Hold Button 89,055 9
Telephone Recorder 173,363 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.