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, April 19, 2021
Electronic Dice13
Telephone Hold Button12
Yesterday
Sunday, April 18, 2021
Colour (Sound) Organ50
Black Light48
Of All Time 12VDC To 120VAC Inverter1,484,054
FM Transmitter978,120

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 215,930 61 *
Car Alarm Arming Horn Beep Canceller bob 126,841 6 *
Wireless Auto Tachometer 329,833 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 150,876 29 *
Parallel (Printer) Port Interface 270,663 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 431,870 63 *
3 Channel Spectrum Analyzer 208,865 20
40W Fluorescent Lamp Inverter Bart Milnes 318,285 60 *
Adjustable Strobe Light 294,838 36
Black Light 260,665 29
Colour (Sound) Organ 277,047 36
Electronic Dice NEW! 177,573 10 *
Fantastic Atom Expander 191,187 25
Flash Slave Trigger 208,327 18 *
Infa-Red Remote Control 619,530 216 *
IR Remote Extender NEW! 120,237 2 *
IR Remote Jammer Carl 250,367 110 *
IR Remote Switch NEW! 147,688 9 *
LASER Transmitter/Receiver 397,039 92
LED Chaser 431,722 83 *
LED Metronome NEW! 91,743 3 *
LED Thermometer 197,077 22 *
Light/Dark Detector 295,761 90 *
Simple Colour Organ 128,831 10 *
Strobe Light 263,657 27 *
TRIAC Light Dimmer 537,704 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 346,889 122 *
Electromagnetic Levitator NEW! 134,026 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 904,810 214 *
AC Motor Speed Controller 372,401 29 *
Air Flow Detector 241,338 54 *
Digital Keypad Combination Lock 186,633 20
Low Voltage Alarm 216,572 58 *
Pine Racecar Victory Judge 94,568 1 *
Pulse Width Modulation DC Motor Control 635,129 94
Rain Detector 294,010 112 *
Simple Lie Detector 547,661 323
Simple Polarity Tester Dudley LeRoux 154,532 13 *
Simple Servo Controller 209,835 22 *
Simple Touch Switch NEW! 159,252 5 *
Simple Two Speed Contactor DC Motor Controller 194,487 21 *
Stepper Motor Controller 726,639 120 *
Time Delay Relay 543,326 88
Time Delay Relay II jawaharlal@excite.com 232,996 39 *
Touch Switch 278,574 51 *
Video Activated Relay 112,551 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 169,020 10 *
Water Detector With Sump/Bilge Pump Controller 142,102 18 *
Wire Loop Alarm Alex Meaden 195,921 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 299,979 25 *
12VDC To 120VAC Inverter 1,484,054 689
6V to 12V Converter 509,185 121
Automatic 12V Lead Acid Battery Charger 916,172 248
Automatic Load Sensing Power Switch 155,494 16 *
Car Battery Charger 866,097 159 *
Dual Polarity Power Supply 358,511 84 *
Fixed Voltage Power Supply 298,515 52 *
High Current Power Supply 323,241 66 *
High Voltage High Current Power Supply 241,577 35 *
LASER Power Supply 282,155 28
Portable CD Player Adapter For Car 200,507 12 *
Power Supply 721,952 259 *
Solid State Tesla Coil NEW! 134,452 4
Solid State Tesla Coil/High Voltage Generator 425,657 50
Transformerless Power Supply 449,775 117 *
Voltage Inverter 322,521 51 *
Voltage Inverter II 190,558 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 571,975 182
3 Watt FM Transmitter Rae XL Tkacik 320,124 83 *
50 Watt Amplifier 493,345 74
8 Note Tune Player 131,768 12 *
8 Watt Audio Amp 357,792 67 *
Aircraft Radio Communications Receiver 263,309 49 *
Crystal Radio 150,580 53 *
Digital Volume Control 320,217 47 *
Electronic Stethoscope 300,216 142 *
FET Audio Mixer 329,836 41
FM Transmitter 978,120 420
Guitar Fuzz Effect 232,859 54 *
Microphone Mixer Anatoly I. Shikhatov 238,762 26 *
Mono To Stereo Synthesizer oRbEq 121,713 18 *
One Tube Regenerative Radio NEW! 123,875 4 *
Op Amp Radio 371,567 80 *
Single Chip AM Radio NEW! 91,175 2 *
Single Chip FM Radio NEW! 159,338 1 *
Sound Level Meter 329,145 51 *
Stereo Tube Amplifier Weslee Kinsler 256,261 15 *
Tone Control 295,572 31
Transistor Organ 186,907 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 154,328 27 *
FM Telephone Bug 226,521 57
Phone Busy Indicator 204,428 24 *
Remote Telephone Ringer 109,631 3 *
Ringing Phone Light Flasher 203,774 35 *
Simple Phone Tap Derek Tombrello 373,631 98 *
Telephone Hold Button 119,382 10
Telephone Recorder 206,498 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.