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, June 13, 2021
Time Delay Relay8
Tone Control7
Yesterday
Saturday, June 12, 2021
12VDC To 120VAC Inverter38
Voltage Inverter34
Of All Time 12VDC To 120VAC Inverter1,487,718
FM Transmitter979,811

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 217,136 61 *
Car Alarm Arming Horn Beep Canceller bob 127,939 6 *
Wireless Auto Tachometer 331,104 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 151,685 29 *
Parallel (Printer) Port Interface 272,189 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 433,635 63 *
3 Channel Spectrum Analyzer 209,968 20
40W Fluorescent Lamp Inverter Bart Milnes 319,533 60 *
Adjustable Strobe Light 296,271 36
Black Light 262,415 29
Colour (Sound) Organ 278,271 36
Electronic Dice NEW! 178,787 10 *
Fantastic Atom Expander 192,515 25
Flash Slave Trigger 209,536 18 *
Infa-Red Remote Control 620,900 216 *
IR Remote Extender NEW! 121,573 2 *
IR Remote Jammer Carl 251,638 110 *
IR Remote Switch NEW! 148,853 9 *
LASER Transmitter/Receiver 398,812 92
LED Chaser 432,719 83 *
LED Metronome NEW! 92,180 3 *
LED Thermometer 197,920 22 *
Light/Dark Detector 296,689 90 *
Simple Colour Organ 129,575 10 *
Strobe Light 264,566 27 *
TRIAC Light Dimmer 538,647 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 348,153 122 *
Electromagnetic Levitator NEW! 134,879 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 906,441 214 *
AC Motor Speed Controller 373,703 29 *
Air Flow Detector 242,239 54 *
Digital Keypad Combination Lock 187,525 20
Low Voltage Alarm 217,735 58 *
Pine Racecar Victory Judge 95,324 1 *
Pulse Width Modulation DC Motor Control 636,248 94
Rain Detector 294,883 112 *
Simple Lie Detector 548,672 323
Simple Polarity Tester Dudley LeRoux 155,711 13 *
Simple Servo Controller 210,834 22 *
Simple Touch Switch NEW! 160,065 5 *
Simple Two Speed Contactor DC Motor Controller 195,342 21 *
Stepper Motor Controller 727,956 120 *
Time Delay Relay 544,325 88
Time Delay Relay II jawaharlal@excite.com 234,221 39 *
Touch Switch 279,458 51 *
Video Activated Relay 113,372 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 169,973 10 *
Water Detector With Sump/Bilge Pump Controller 143,118 18 *
Wire Loop Alarm Alex Meaden 196,778 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 301,069 25 *
12VDC To 120VAC Inverter 1,487,718 689
6V to 12V Converter 510,551 121
Automatic 12V Lead Acid Battery Charger 917,746 248
Automatic Load Sensing Power Switch 156,642 16 *
Car Battery Charger 867,273 159 *
Dual Polarity Power Supply 359,368 84 *
Fixed Voltage Power Supply 299,479 52 *
High Current Power Supply 324,358 66 *
High Voltage High Current Power Supply 242,479 35 *
LASER Power Supply 283,387 28
Portable CD Player Adapter For Car 201,607 12 *
Power Supply 723,629 259 *
Solid State Tesla Coil NEW! 135,135 4
Solid State Tesla Coil/High Voltage Generator 427,220 50
Transformerless Power Supply 450,823 117 *
Voltage Inverter 323,729 51 *
Voltage Inverter II 191,446 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 573,002 182
3 Watt FM Transmitter Rae XL Tkacik 321,226 83 *
50 Watt Amplifier 494,444 74
8 Note Tune Player 132,572 12 *
8 Watt Audio Amp 358,923 67 *
Aircraft Radio Communications Receiver 264,412 49 *
Crystal Radio 151,034 53 *
Digital Volume Control 321,224 47 *
Electronic Stethoscope 301,487 142 *
FET Audio Mixer 331,048 41
FM Transmitter 979,811 420
Guitar Fuzz Effect 234,008 54 *
Microphone Mixer Anatoly I. Shikhatov 239,746 26 *
Mono To Stereo Synthesizer oRbEq 122,723 18 *
One Tube Regenerative Radio NEW! 124,687 4 *
Op Amp Radio 372,713 80 *
Single Chip AM Radio NEW! 91,674 2 *
Single Chip FM Radio NEW! 160,470 1 *
Sound Level Meter 330,110 51 *
Stereo Tube Amplifier Weslee Kinsler 257,257 15 *
Tone Control 296,794 31
Transistor Organ 187,930 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 155,138 27 *
FM Telephone Bug 227,281 57
Phone Busy Indicator 205,186 24 *
Remote Telephone Ringer 110,448 3 *
Ringing Phone Light Flasher 204,717 35 *
Simple Phone Tap Derek Tombrello 374,483 98 *
Telephone Hold Button 120,275 10
Telephone Recorder 207,381 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.