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 21, 2019
Dual Polarity Power Supply54
12VDC To 120VAC Inverter39
Yesterday
Sunday, October 20, 2019
Automatic 12V Lead Acid Battery Charger572
Telephone Recorder99
Of All Time 12VDC To 120VAC Inverter1,449,796
FM Transmitter958,178

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 201,173 61 *
Car Alarm Arming Horn Beep Canceller bob 112,273 6 *
Wireless Auto Tachometer 312,705 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,541 29 *
Parallel (Printer) Port Interface 252,838 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 409,347 63 *
3 Channel Spectrum Analyzer 196,439 20
40W Fluorescent Lamp Inverter Bart Milnes 302,064 60 *
Adjustable Strobe Light 277,373 36
Black Light 240,537 29
Colour (Sound) Organ 259,908 36
Electronic Dice NEW! 162,261 10 *
Fantastic Atom Expander 174,480 25
Flash Slave Trigger 192,913 18 *
Infa-Red Remote Control 599,182 216 *
IR Remote Extender NEW! 103,725 2 *
IR Remote Jammer Carl 236,449 110 *
IR Remote Switch NEW! 132,800 9 *
LASER Transmitter/Receiver 378,064 92
LED Chaser 419,055 83 *
LED Metronome NEW! 86,297 3 *
LED Thermometer 185,677 22 *
Light/Dark Detector 283,637 90 *
Simple Colour Organ 118,989 10 *
Strobe Light 252,423 27 *
TRIAC Light Dimmer 470,602 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 326,267 122 *
Electromagnetic Levitator NEW! 122,822 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 881,911 214 *
AC Motor Speed Controller 357,028 29 *
Air Flow Detector 229,879 54 *
Digital Keypad Combination Lock 175,378 20
Low Voltage Alarm 204,090 58 *
Pine Racecar Victory Judge 84,908 1 *
Pulse Width Modulation DC Motor Control 621,788 94
Rain Detector 283,305 112 *
Simple Lie Detector 534,149 323
Simple Polarity Tester Dudley LeRoux 139,389 13 *
Simple Servo Controller 198,259 22 *
Simple Touch Switch NEW! 148,619 5 *
Simple Two Speed Contactor DC Motor Controller 183,635 21 *
Stepper Motor Controller 708,419 120 *
Time Delay Relay 527,810 88
Time Delay Relay II jawaharlal@excite.com 217,519 39 *
Touch Switch 266,420 51 *
Video Activated Relay 102,678 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 157,255 10 *
Water Detector With Sump/Bilge Pump Controller 128,483 18 *
Wire Loop Alarm Alex Meaden 185,464 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 285,554 25 *
12VDC To 120VAC Inverter 1,449,796 689
6V to 12V Converter 472,792 121
Automatic 12V Lead Acid Battery Charger 895,515 247
Automatic Load Sensing Power Switch 142,804 16 *
Car Battery Charger 847,096 159 *
Dual Polarity Power Supply 349,361 84 *
Fixed Voltage Power Supply 286,747 52 *
High Current Power Supply 308,504 65 *
High Voltage High Current Power Supply 230,033 35 *
LASER Power Supply 268,688 28
Portable CD Player Adapter For Car 188,375 12 *
Power Supply 706,026 259 *
Solid State Tesla Coil NEW! 126,393 4
Solid State Tesla Coil/High Voltage Generator 407,107 50
Transformerless Power Supply 435,803 117 *
Voltage Inverter 312,148 51 *
Voltage Inverter II 179,982 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 557,627 182
3 Watt FM Transmitter Rae XL Tkacik 306,422 82 *
50 Watt Amplifier 478,394 74
8 Note Tune Player 121,831 12 *
8 Watt Audio Amp 343,060 67 *
Aircraft Radio Communications Receiver 246,711 49 *
Crystal Radio 144,498 53 *
Digital Volume Control 307,699 47 *
Electronic Stethoscope 285,123 141 *
FET Audio Mixer 315,985 41
FM Transmitter 958,178 419
Guitar Fuzz Effect 219,721 52 *
Microphone Mixer Anatoly I. Shikhatov 226,424 26 *
Mono To Stereo Synthesizer oRbEq 109,524 18 *
One Tube Regenerative Radio NEW! 115,125 4 *
Op Amp Radio 356,214 80 *
Single Chip AM Radio NEW! 85,541 2 *
Single Chip FM Radio NEW! 146,571 1 *
Sound Level Meter 317,044 51 *
Stereo Tube Amplifier Weslee Kinsler 244,314 15 *
Tone Control 281,549 31
Transistor Organ 173,909 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,037 27 *
FM Telephone Bug 215,689 57
Phone Busy Indicator 194,454 24 *
Remote Telephone Ringer 99,360 3 *
Ringing Phone Light Flasher 190,847 35 *
Simple Phone Tap Derek Tombrello 342,929 98 *
Telephone Hold Button 108,800 10
Telephone Recorder 192,166 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.