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, August 27, 2016
Automatic 12V Lead Acid Battery Charger37
12VDC To 120VAC Inverter35
Yesterday
Friday, August 26, 2016
12VDC To 120VAC Inverter101
Automatic 12V Lead Acid Battery Charger88
Of All Time 12VDC To 120VAC Inverter1,351,997
FM Transmitter903,379

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 179,402 61 *
Car Alarm Arming Horn Beep Canceller bob 93,224 6 *
Wireless Auto Tachometer 285,364 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 123,313 29 *
Parallel (Printer) Port Interface 225,363 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 376,238 62 *
3 Channel Spectrum Analyzer 170,522 20
40W Fluorescent Lamp Inverter Bart Milnes 277,082 60 *
Adjustable Strobe Light 248,219 36
Black Light 210,986 29
Colour (Sound) Organ 233,592 35
Electronic Dice NEW! 139,021 8 *
Fantastic Atom Expander 148,293 25
Flash Slave Trigger 170,845 17 *
Infa-Red Remote Control 563,476 216 *
IR Remote Extender NEW! 79,834 2 *
IR Remote Jammer Carl 211,532 110 *
IR Remote Switch NEW! 110,868 9 *
LASER Transmitter/Receiver 346,966 91
LED Chaser 390,685 83 *
LED Metronome NEW! 71,809 3 *
LED Thermometer 164,515 22 *
Light/Dark Detector 258,741 89 *
Simple Colour Organ 102,002 10 *
Strobe Light 231,929 27 *
TRIAC Light Dimmer 437,277 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 300,348 122 *
Electromagnetic Levitator NEW! 100,169 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 830,508 214 *
AC Motor Speed Controller 316,751 29 *
Air Flow Detector 206,473 54 *
Digital Keypad Combination Lock 152,304 20
Low Voltage Alarm 178,451 58 *
Pine Racecar Victory Judge 67,088 1 *
Pulse Width Modulation DC Motor Control 589,235 93
Rain Detector 259,580 112 *
Simple Lie Detector 498,689 323
Simple Polarity Tester Dudley LeRoux 116,360 13 *
Simple Servo Controller 172,245 22 *
Simple Touch Switch NEW! 127,512 5 *
Simple Two Speed Contactor DC Motor Controller 164,872 21 *
Stepper Motor Controller 649,057 120 *
Time Delay Relay 490,010 86
Time Delay Relay II jawaharlal@excite.com 192,427 39 *
Touch Switch 243,776 51 *
Video Activated Relay 84,002 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 134,925 10 *
Water Detector With Sump/Bilge Pump Controller 110,354 18 *
Wire Loop Alarm Alex Meaden 166,331 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 246,209 25 *
12VDC To 120VAC Inverter 1,351,997 686
6V to 12V Converter 423,088 121
Automatic 12V Lead Acid Battery Charger 831,368 243
Automatic Load Sensing Power Switch 121,230 15 *
Car Battery Charger 792,266 159 *
Dual Polarity Power Supply 284,598 84 *
Fixed Voltage Power Supply 263,868 52 *
High Current Power Supply 279,488 64 *
High Voltage High Current Power Supply 209,119 35 *
LASER Power Supply 236,491 28
Portable CD Player Adapter For Car 165,209 12 *
Power Supply 659,368 259 *
Solid State Tesla Coil NEW! 104,591 3
Solid State Tesla Coil/High Voltage Generator 362,236 49
Transformerless Power Supply 401,511 116 *
Voltage Inverter 287,879 51 *
Voltage Inverter II 164,207 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 524,048 182
3 Watt FM Transmitter Rae XL Tkacik 279,526 81 *
50 Watt Amplifier 439,322 74
8 Note Tune Player 105,389 12 *
8 Watt Audio Amp 309,524 67 *
Aircraft Radio Communications Receiver 215,393 49 *
Crystal Radio 125,860 53 *
Digital Volume Control 281,014 46 *
Electronic Stethoscope 254,318 141 *
FET Audio Mixer 284,789 40
FM Transmitter 903,379 418
Guitar Fuzz Effect 190,735 52 *
Microphone Mixer Anatoly I. Shikhatov 198,870 25 *
Mono To Stereo Synthesizer oRbEq 87,953 17 *
One Tube Regenerative Radio NEW! 90,403 4 *
Op Amp Radio 322,812 80 *
Single Chip AM Radio NEW! 70,408 2 *
Single Chip FM Radio NEW! 117,489 0 *
Sound Level Meter 289,907 51 *
Stereo Tube Amplifier Weslee Kinsler 219,968 15 *
Tone Control 251,371 31
Transistor Organ 150,543 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 128,493 27 *
FM Telephone Bug 191,612 57
Phone Busy Indicator 164,603 24 *
Remote Telephone Ringer 85,122 3 *
Ringing Phone Light Flasher 167,575 33 *
Simple Phone Tap Derek Tombrello 318,549 98 *
Telephone Hold Button 87,427 9
Telephone Recorder 171,863 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.