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
Tuesday, November 12, 2019
12VDC To 120VAC Inverter9
Car Battery Charger8
Yesterday
Monday, November 11, 2019
Stepper Motor Controller70
Dual Polarity Power Supply68
Of All Time 12VDC To 120VAC Inverter1,451,377
FM Transmitter959,061

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 201,516 61 *
Car Alarm Arming Horn Beep Canceller bob 112,561 6 *
Wireless Auto Tachometer 313,225 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,801 29 *
Parallel (Printer) Port Interface 253,301 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 409,793 63 *
3 Channel Spectrum Analyzer 196,811 20
40W Fluorescent Lamp Inverter Bart Milnes 302,981 60 *
Adjustable Strobe Light 277,748 36
Black Light 241,061 29
Colour (Sound) Organ 260,293 36
Electronic Dice NEW! 162,610 10 *
Fantastic Atom Expander 174,907 25
Flash Slave Trigger 193,193 18 *
Infa-Red Remote Control 599,686 216 *
IR Remote Extender NEW! 104,060 2 *
IR Remote Jammer Carl 236,829 110 *
IR Remote Switch NEW! 133,102 9 *
LASER Transmitter/Receiver 378,607 92
LED Chaser 419,505 83 *
LED Metronome NEW! 86,558 3 *
LED Thermometer 186,032 22 *
Light/Dark Detector 283,997 90 *
Simple Colour Organ 119,219 10 *
Strobe Light 252,739 27 *
TRIAC Light Dimmer 471,321 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 326,696 122 *
Electromagnetic Levitator NEW! 123,083 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 882,682 214 *
AC Motor Speed Controller 357,726 29 *
Air Flow Detector 230,184 54 *
Digital Keypad Combination Lock 175,700 20
Low Voltage Alarm 204,436 58 *
Pine Racecar Victory Judge 85,200 1 *
Pulse Width Modulation DC Motor Control 622,251 94
Rain Detector 283,608 112 *
Simple Lie Detector 534,637 323
Simple Polarity Tester Dudley LeRoux 139,692 13 *
Simple Servo Controller 198,644 22 *
Simple Touch Switch NEW! 148,861 5 *
Simple Two Speed Contactor DC Motor Controller 183,909 21 *
Stepper Motor Controller 709,258 120 *
Time Delay Relay 528,297 88
Time Delay Relay II jawaharlal@excite.com 217,846 39 *
Touch Switch 266,776 51 *
Video Activated Relay 102,883 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 157,591 10 *
Water Detector With Sump/Bilge Pump Controller 128,751 18 *
Wire Loop Alarm Alex Meaden 185,784 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 286,084 25 *
12VDC To 120VAC Inverter 1,451,377 689
6V to 12V Converter 473,721 121
Automatic 12V Lead Acid Battery Charger 896,373 247
Automatic Load Sensing Power Switch 143,152 16 *
Car Battery Charger 847,980 159 *
Dual Polarity Power Supply 350,212 84 *
Fixed Voltage Power Supply 287,132 52 *
High Current Power Supply 309,017 65 *
High Voltage High Current Power Supply 230,340 35 *
LASER Power Supply 269,115 28
Portable CD Player Adapter For Car 188,694 12 *
Power Supply 706,676 259 *
Solid State Tesla Coil NEW! 126,787 4
Solid State Tesla Coil/High Voltage Generator 407,758 50
Transformerless Power Supply 436,279 117 *
Voltage Inverter 312,542 51 *
Voltage Inverter II 180,250 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 558,069 182
3 Watt FM Transmitter Rae XL Tkacik 306,821 82 *
50 Watt Amplifier 478,904 74
8 Note Tune Player 122,052 12 *
8 Watt Audio Amp 343,541 67 *
Aircraft Radio Communications Receiver 247,151 49 *
Crystal Radio 144,817 53 *
Digital Volume Control 308,158 47 *
Electronic Stethoscope 285,614 141 *
FET Audio Mixer 316,373 41
FM Transmitter 959,061 419
Guitar Fuzz Effect 220,129 52 *
Microphone Mixer Anatoly I. Shikhatov 226,889 26 *
Mono To Stereo Synthesizer oRbEq 109,896 18 *
One Tube Regenerative Radio NEW! 115,526 4 *
Op Amp Radio 356,619 80 *
Single Chip AM Radio NEW! 85,795 2 *
Single Chip FM Radio NEW! 146,976 1 *
Sound Level Meter 317,392 51 *
Stereo Tube Amplifier Weslee Kinsler 244,694 15 *
Tone Control 282,078 31
Transistor Organ 174,293 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,311 27 *
FM Telephone Bug 215,996 57
Phone Busy Indicator 194,797 24 *
Remote Telephone Ringer 99,544 3 *
Ringing Phone Light Flasher 191,388 35 *
Simple Phone Tap Derek Tombrello 343,271 98 *
Telephone Hold Button 109,120 10
Telephone Recorder 192,798 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.