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, October 25, 2021
IR Remote Jammer10
Low Voltage Alarm8
Yesterday
Sunday, October 24, 2021
12VDC To 120VAC Inverter53
Black Light38
Of All Time 12VDC To 120VAC Inverter1,492,826
FM Transmitter983,223

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 218,684 61 *
Car Alarm Arming Horn Beep Canceller bob 129,275 6 *
Wireless Auto Tachometer 333,081 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,973 29 *
Parallel (Printer) Port Interface 274,316 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 435,993 63 *
3 Channel Spectrum Analyzer 211,689 20
40W Fluorescent Lamp Inverter Bart Milnes 321,149 60 *
Adjustable Strobe Light 298,099 36
Black Light 265,121 29
Colour (Sound) Organ 280,030 36
Electronic Dice NEW! 180,357 10 *
Fantastic Atom Expander 194,269 25
Flash Slave Trigger 211,397 18 *
Infa-Red Remote Control 622,916 216 *
IR Remote Extender NEW! 123,237 2 *
IR Remote Jammer Carl 254,000 110 *
IR Remote Switch NEW! 150,198 9 *
LASER Transmitter/Receiver 401,260 92
LED Chaser 434,471 83 *
LED Metronome NEW! 93,178 3 *
LED Thermometer 199,233 22 *
Light/Dark Detector 298,204 90 *
Simple Colour Organ 130,746 10 *
Strobe Light 266,288 27 *
TRIAC Light Dimmer 540,255 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 349,867 122 *
Electromagnetic Levitator NEW! 136,454 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 909,049 214 *
AC Motor Speed Controller 376,057 29 *
Air Flow Detector 243,624 54 *
Digital Keypad Combination Lock 188,919 20
Low Voltage Alarm 219,428 58 *
Pine Racecar Victory Judge 96,448 1 *
Pulse Width Modulation DC Motor Control 638,092 94
Rain Detector 296,385 112 *
Simple Lie Detector 550,753 323
Simple Polarity Tester Dudley LeRoux 157,219 13 *
Simple Servo Controller 212,533 22 *
Simple Touch Switch NEW! 161,512 5 *
Simple Two Speed Contactor DC Motor Controller 196,862 21 *
Stepper Motor Controller 730,379 120 *
Time Delay Relay 546,112 88
Time Delay Relay II jawaharlal@excite.com 236,112 39 *
Touch Switch 280,926 51 *
Video Activated Relay 114,587 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 171,611 10 *
Water Detector With Sump/Bilge Pump Controller 144,955 18 *
Wire Loop Alarm Alex Meaden 198,094 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 302,935 25 *
12VDC To 120VAC Inverter 1,492,826 689
6V to 12V Converter 513,215 121
Automatic 12V Lead Acid Battery Charger 920,406 248
Automatic Load Sensing Power Switch 158,352 16 *
Car Battery Charger 869,303 159 *
Dual Polarity Power Supply 361,053 84 *
Fixed Voltage Power Supply 301,240 52 *
High Current Power Supply 326,291 66 *
High Voltage High Current Power Supply 244,017 35 *
LASER Power Supply 285,266 28
Portable CD Player Adapter For Car 203,332 12 *
Power Supply 725,750 259 *
Solid State Tesla Coil NEW! 136,627 4
Solid State Tesla Coil/High Voltage Generator 429,911 50
Transformerless Power Supply 452,685 117 *
Voltage Inverter 326,118 51 *
Voltage Inverter II 192,857 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 574,905 182
3 Watt FM Transmitter Rae XL Tkacik 323,177 83 *
50 Watt Amplifier 496,320 74
8 Note Tune Player 133,766 12 *
8 Watt Audio Amp 360,928 67 *
Aircraft Radio Communications Receiver 266,282 49 *
Crystal Radio 152,032 53 *
Digital Volume Control 323,019 47 *
Electronic Stethoscope 303,554 142 *
FET Audio Mixer 332,924 41
FM Transmitter 983,223 420
Guitar Fuzz Effect 236,038 54 *
Microphone Mixer Anatoly I. Shikhatov 241,384 26 *
Mono To Stereo Synthesizer oRbEq 124,464 18 *
One Tube Regenerative Radio NEW! 126,436 4 *
Op Amp Radio 374,883 80 *
Single Chip AM Radio NEW! 92,810 2 *
Single Chip FM Radio NEW! 162,164 1 *
Sound Level Meter 331,739 51 *
Stereo Tube Amplifier Weslee Kinsler 258,833 15 *
Tone Control 298,846 31
Transistor Organ 189,616 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,522 27 *
FM Telephone Bug 228,624 57
Phone Busy Indicator 206,602 24 *
Remote Telephone Ringer 111,724 3 *
Ringing Phone Light Flasher 206,710 35 *
Simple Phone Tap Derek Tombrello 375,950 98 *
Telephone Hold Button 121,635 10
Telephone Recorder 208,966 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.