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
Monday, July 24, 2017
Automatic 12V Lead Acid Battery Charger15
Dual Polarity Power Supply15
Yesterday
Sunday, July 23, 2017
12VDC To 120VAC Inverter107
Automatic 12V Lead Acid Battery Charger47
Of All Time 12VDC To 120VAC Inverter1,384,526
FM Transmitter919,759

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 184,361 61 *
Car Alarm Arming Horn Beep Canceller bob 96,714 6 *
Wireless Auto Tachometer 291,249 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 128,130 29 *
Parallel (Printer) Port Interface 230,607 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 385,065 62 *
3 Channel Spectrum Analyzer 177,975 20
40W Fluorescent Lamp Inverter Bart Milnes 283,988 60 *
Adjustable Strobe Light 255,916 36
Black Light 218,214 29
Colour (Sound) Organ 240,551 36
Electronic Dice NEW! 145,938 9 *
Fantastic Atom Expander 154,911 25
Flash Slave Trigger 176,439 17 *
Infa-Red Remote Control 572,778 216 *
IR Remote Extender NEW! 85,788 2 *
IR Remote Jammer Carl 218,500 110 *
IR Remote Switch NEW! 115,820 9 *
LASER Transmitter/Receiver 355,987 92
LED Chaser 398,565 83 *
LED Metronome NEW! 76,384 3 *
LED Thermometer 169,955 22 *
Light/Dark Detector 268,478 89 *
Simple Colour Organ 106,585 10 *
Strobe Light 237,532 27 *
TRIAC Light Dimmer 446,811 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 305,770 122 *
Electromagnetic Levitator NEW! 106,551 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 845,123 214 *
AC Motor Speed Controller 328,675 29 *
Air Flow Detector 213,629 54 *
Digital Keypad Combination Lock 157,468 20
Low Voltage Alarm 186,048 58 *
Pine Racecar Victory Judge 71,076 1 *
Pulse Width Modulation DC Motor Control 600,804 93
Rain Detector 266,103 112 *
Simple Lie Detector 508,332 323
Simple Polarity Tester Dudley LeRoux 122,315 13 *
Simple Servo Controller 178,140 22 *
Simple Touch Switch NEW! 133,451 5 *
Simple Two Speed Contactor DC Motor Controller 170,255 21 *
Stepper Motor Controller 663,161 120 *
Time Delay Relay 501,544 88
Time Delay Relay II jawaharlal@excite.com 198,313 39 *
Touch Switch 249,691 51 *
Video Activated Relay 88,907 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 140,318 10 *
Water Detector With Sump/Bilge Pump Controller 114,061 18 *
Wire Loop Alarm Alex Meaden 171,933 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 258,684 25 *
12VDC To 120VAC Inverter 1,384,526 687
6V to 12V Converter 436,235 121
Automatic 12V Lead Acid Battery Charger 853,475 246
Automatic Load Sensing Power Switch 127,444 15 *
Car Battery Charger 807,490 159 *
Dual Polarity Power Supply 295,724 84 *
Fixed Voltage Power Supply 271,166 52 *
High Current Power Supply 287,878 64 *
High Voltage High Current Power Supply 215,396 35 *
LASER Power Supply 244,832 28
Portable CD Player Adapter For Car 172,575 12 *
Power Supply 673,861 259 *
Solid State Tesla Coil NEW! 110,568 3
Solid State Tesla Coil/High Voltage Generator 375,669 50
Transformerless Power Supply 410,688 117 *
Voltage Inverter 296,528 51 *
Voltage Inverter II 168,235 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 534,617 182
3 Watt FM Transmitter Rae XL Tkacik 287,372 81 *
50 Watt Amplifier 450,383 74
8 Note Tune Player 110,195 12 *
8 Watt Audio Amp 319,176 67 *
Aircraft Radio Communications Receiver 223,850 49 *
Crystal Radio 131,010 53 *
Digital Volume Control 288,478 47 *
Electronic Stethoscope 264,102 141 *
FET Audio Mixer 293,777 40
FM Transmitter 919,759 418
Guitar Fuzz Effect 197,886 52 *
Microphone Mixer Anatoly I. Shikhatov 206,670 26 *
Mono To Stereo Synthesizer oRbEq 92,779 18 *
One Tube Regenerative Radio NEW! 97,430 4 *
Op Amp Radio 332,824 80 *
Single Chip AM Radio NEW! 75,087 2 *
Single Chip FM Radio NEW! 125,522 1 *
Sound Level Meter 296,617 51 *
Stereo Tube Amplifier Weslee Kinsler 225,647 15 *
Tone Control 259,411 31
Transistor Organ 156,359 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 132,646 27 *
FM Telephone Bug 196,318 57
Phone Busy Indicator 175,013 24 *
Remote Telephone Ringer 88,679 3 *
Ringing Phone Light Flasher 174,354 33 *
Simple Phone Tap Derek Tombrello 323,968 98 *
Telephone Hold Button 92,760 9
Telephone Recorder 176,925 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.