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
Saturday, December 04, 2021
12VDC To 120VAC Inverter16
Automatic 12V Lead Acid Battery Charger14
Yesterday
Friday, December 03, 2021
12VDC To 120VAC Inverter46
6V to 12V Converter28
Of All Time 12VDC To 120VAC Inverter1,494,446
FM Transmitter986,815

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 219,123 61 *
Car Alarm Arming Horn Beep Canceller bob 129,622 6 *
Wireless Auto Tachometer 333,683 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 153,363 29 *
Parallel (Printer) Port Interface 274,858 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 436,625 63 *
3 Channel Spectrum Analyzer 212,132 20
40W Fluorescent Lamp Inverter Bart Milnes 321,616 60 *
Adjustable Strobe Light 298,702 36
Black Light 265,876 29
Colour (Sound) Organ 280,573 36
Electronic Dice NEW! 180,807 10 *
Fantastic Atom Expander 194,923 25
Flash Slave Trigger 211,901 18 *
Infa-Red Remote Control 623,494 216 *
IR Remote Extender NEW! 123,765 2 *
IR Remote Jammer Carl 254,571 110 *
IR Remote Switch NEW! 150,568 9 *
LASER Transmitter/Receiver 401,941 92
LED Chaser 435,064 83 *
LED Metronome NEW! 93,469 3 *
LED Thermometer 199,596 22 *
Light/Dark Detector 298,712 90 *
Simple Colour Organ 131,080 10 *
Strobe Light 266,758 27 *
TRIAC Light Dimmer 540,764 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 350,401 122 *
Electromagnetic Levitator NEW! 136,813 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 909,756 214 *
AC Motor Speed Controller 376,713 29 *
Air Flow Detector 244,004 54 *
Digital Keypad Combination Lock 189,319 20
Low Voltage Alarm 220,098 58 *
Pine Racecar Victory Judge 96,771 1 *
Pulse Width Modulation DC Motor Control 638,620 94
Rain Detector 296,828 112 *
Simple Lie Detector 551,292 323
Simple Polarity Tester Dudley LeRoux 157,670 13 *
Simple Servo Controller 213,107 22 *
Simple Touch Switch NEW! 161,901 5 *
Simple Two Speed Contactor DC Motor Controller 197,261 21 *
Stepper Motor Controller 731,196 120 *
Time Delay Relay 546,622 88
Time Delay Relay II jawaharlal@excite.com 236,670 39 *
Touch Switch 281,378 51 *
Video Activated Relay 114,975 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 172,035 10 *
Water Detector With Sump/Bilge Pump Controller 145,356 18 *
Wire Loop Alarm Alex Meaden 198,468 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 303,497 25 *
12VDC To 120VAC Inverter 1,494,446 689
6V to 12V Converter 513,973 121
Automatic 12V Lead Acid Battery Charger 921,383 248
Automatic Load Sensing Power Switch 158,981 16 *
Car Battery Charger 869,994 159 *
Dual Polarity Power Supply 361,510 84 *
Fixed Voltage Power Supply 301,743 52 *
High Current Power Supply 326,787 66 *
High Voltage High Current Power Supply 244,432 35 *
LASER Power Supply 285,809 28
Portable CD Player Adapter For Car 203,793 12 *
Power Supply 726,350 259 *
Solid State Tesla Coil NEW! 137,069 4
Solid State Tesla Coil/High Voltage Generator 430,544 50
Transformerless Power Supply 453,220 117 *
Voltage Inverter 327,044 51 *
Voltage Inverter II 193,264 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 575,519 182
3 Watt FM Transmitter Rae XL Tkacik 323,817 83 *
50 Watt Amplifier 496,894 74
8 Note Tune Player 134,142 12 *
8 Watt Audio Amp 361,575 67 *
Aircraft Radio Communications Receiver 266,787 49 *
Crystal Radio 152,338 53 *
Digital Volume Control 323,528 47 *
Electronic Stethoscope 304,061 142 *
FET Audio Mixer 333,525 41
FM Transmitter 986,815 420
Guitar Fuzz Effect 236,594 54 *
Microphone Mixer Anatoly I. Shikhatov 241,819 26 *
Mono To Stereo Synthesizer oRbEq 124,899 18 *
One Tube Regenerative Radio NEW! 127,035 4 *
Op Amp Radio 375,541 80 *
Single Chip AM Radio NEW! 93,116 2 *
Single Chip FM Radio NEW! 162,642 1 *
Sound Level Meter 332,225 51 *
Stereo Tube Amplifier Weslee Kinsler 259,353 15 *
Tone Control 299,629 31
Transistor Organ 190,135 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,926 27 *
FM Telephone Bug 228,989 57
Phone Busy Indicator 207,037 24 *
Remote Telephone Ringer 112,035 3 *
Ringing Phone Light Flasher 207,346 35 *
Simple Phone Tap Derek Tombrello 376,337 98 *
Telephone Hold Button 121,974 10
Telephone Recorder 209,402 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.