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, October 19, 2019
12VDC To 120VAC Inverter26
Car Battery Charger25
Yesterday
Friday, October 18, 2019
Touch Switch50
12VDC To 120VAC Inverter39
Of All Time 12VDC To 120VAC Inverter1,449,671
FM Transmitter958,112

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 201,152 61 *
Car Alarm Arming Horn Beep Canceller bob 112,254 6 *
Wireless Auto Tachometer 312,647 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,518 29 *
Parallel (Printer) Port Interface 252,780 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 409,311 63 *
3 Channel Spectrum Analyzer 196,412 20
40W Fluorescent Lamp Inverter Bart Milnes 301,919 60 *
Adjustable Strobe Light 277,336 36
Black Light 240,498 29
Colour (Sound) Organ 259,880 36
Electronic Dice NEW! 162,236 10 *
Fantastic Atom Expander 174,446 25
Flash Slave Trigger 192,888 18 *
Infa-Red Remote Control 599,147 216 *
IR Remote Extender NEW! 103,697 2 *
IR Remote Jammer Carl 236,426 110 *
IR Remote Switch NEW! 132,783 9 *
LASER Transmitter/Receiver 378,019 92
LED Chaser 419,021 83 *
LED Metronome NEW! 86,273 3 *
LED Thermometer 185,641 22 *
Light/Dark Detector 283,606 90 *
Simple Colour Organ 118,975 10 *
Strobe Light 252,394 27 *
TRIAC Light Dimmer 470,541 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 326,241 122 *
Electromagnetic Levitator NEW! 122,790 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 881,840 214 *
AC Motor Speed Controller 356,958 29 *
Air Flow Detector 229,847 54 *
Digital Keypad Combination Lock 175,334 20
Low Voltage Alarm 204,071 58 *
Pine Racecar Victory Judge 84,872 1 *
Pulse Width Modulation DC Motor Control 621,756 93
Rain Detector 283,279 112 *
Simple Lie Detector 534,084 323
Simple Polarity Tester Dudley LeRoux 139,369 13 *
Simple Servo Controller 198,212 22 *
Simple Touch Switch NEW! 148,596 5 *
Simple Two Speed Contactor DC Motor Controller 183,616 21 *
Stepper Motor Controller 708,352 120 *
Time Delay Relay 527,747 88
Time Delay Relay II jawaharlal@excite.com 217,500 39 *
Touch Switch 266,386 51 *
Video Activated Relay 102,660 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 157,224 10 *
Water Detector With Sump/Bilge Pump Controller 128,457 18 *
Wire Loop Alarm Alex Meaden 185,441 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 285,481 25 *
12VDC To 120VAC Inverter 1,449,671 688
6V to 12V Converter 472,716 121
Automatic 12V Lead Acid Battery Charger 894,886 246
Automatic Load Sensing Power Switch 142,783 16 *
Car Battery Charger 847,004 159 *
Dual Polarity Power Supply 349,278 84 *
Fixed Voltage Power Supply 286,721 52 *
High Current Power Supply 308,454 65 *
High Voltage High Current Power Supply 230,012 35 *
LASER Power Supply 268,635 28
Portable CD Player Adapter For Car 188,345 12 *
Power Supply 705,963 259 *
Solid State Tesla Coil NEW! 126,361 4
Solid State Tesla Coil/High Voltage Generator 407,043 50
Transformerless Power Supply 435,743 117 *
Voltage Inverter 312,118 51 *
Voltage Inverter II 179,964 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 557,585 182
3 Watt FM Transmitter Rae XL Tkacik 306,395 82 *
50 Watt Amplifier 478,337 74
8 Note Tune Player 121,809 12 *
8 Watt Audio Amp 343,003 67 *
Aircraft Radio Communications Receiver 246,647 49 *
Crystal Radio 144,452 53 *
Digital Volume Control 307,632 47 *
Electronic Stethoscope 285,077 141 *
FET Audio Mixer 315,938 41
FM Transmitter 958,112 419
Guitar Fuzz Effect 219,668 52 *
Microphone Mixer Anatoly I. Shikhatov 226,358 26 *
Mono To Stereo Synthesizer oRbEq 109,476 18 *
One Tube Regenerative Radio NEW! 115,082 4 *
Op Amp Radio 356,170 80 *
Single Chip AM Radio NEW! 85,514 2 *
Single Chip FM Radio NEW! 146,515 1 *
Sound Level Meter 316,997 51 *
Stereo Tube Amplifier Weslee Kinsler 244,255 15 *
Tone Control 281,497 31
Transistor Organ 173,857 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,017 27 *
FM Telephone Bug 215,642 57
Phone Busy Indicator 194,398 24 *
Remote Telephone Ringer 99,339 3 *
Ringing Phone Light Flasher 190,802 34 *
Simple Phone Tap Derek Tombrello 342,891 98 *
Telephone Hold Button 108,744 10
Telephone Recorder 192,042 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.