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
Sunday, January 22, 2017
Automatic 12V Lead Acid Battery Charger53
12VDC To 120VAC Inverter40
Yesterday
Saturday, January 21, 2017
12VDC To 120VAC Inverter80
Automatic 12V Lead Acid Battery Charger76
Of All Time 12VDC To 120VAC Inverter1,366,664
FM Transmitter911,836

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 181,614 61 *
Car Alarm Arming Horn Beep Canceller bob 94,779 6 *
Wireless Auto Tachometer 288,120 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 125,446 29 *
Parallel (Printer) Port Interface 227,656 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 380,490 62 *
3 Channel Spectrum Analyzer 174,143 20
40W Fluorescent Lamp Inverter Bart Milnes 280,204 60 *
Adjustable Strobe Light 251,807 36
Black Light 214,201 29
Colour (Sound) Organ 236,857 36
Electronic Dice NEW! 142,608 9 *
Fantastic Atom Expander 151,773 25
Flash Slave Trigger 173,297 17 *
Infa-Red Remote Control 568,087 216 *
IR Remote Extender NEW! 82,388 2 *
IR Remote Jammer Carl 214,815 110 *
IR Remote Switch NEW! 113,085 9 *
LASER Transmitter/Receiver 351,585 92
LED Chaser 394,521 83 *
LED Metronome NEW! 73,845 3 *
LED Thermometer 166,941 22 *
Light/Dark Detector 264,050 89 *
Simple Colour Organ 103,916 10 *
Strobe Light 234,443 27 *
TRIAC Light Dimmer 441,550 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 302,990 122 *
Electromagnetic Levitator NEW! 103,075 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 838,261 214 *
AC Motor Speed Controller 322,468 29 *
Air Flow Detector 209,983 54 *
Digital Keypad Combination Lock 154,893 20
Low Voltage Alarm 182,034 58 *
Pine Racecar Victory Judge 68,793 1 *
Pulse Width Modulation DC Motor Control 595,243 93
Rain Detector 262,691 112 *
Simple Lie Detector 503,743 323
Simple Polarity Tester Dudley LeRoux 119,146 13 *
Simple Servo Controller 175,060 22 *
Simple Touch Switch NEW! 130,353 5 *
Simple Two Speed Contactor DC Motor Controller 167,320 21 *
Stepper Motor Controller 656,072 120 *
Time Delay Relay 495,646 88
Time Delay Relay II jawaharlal@excite.com 195,178 39 *
Touch Switch 246,432 51 *
Video Activated Relay 86,119 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 137,430 10 *
Water Detector With Sump/Bilge Pump Controller 112,057 18 *
Wire Loop Alarm Alex Meaden 168,862 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 252,363 25 *
12VDC To 120VAC Inverter 1,366,664 687
6V to 12V Converter 429,436 121
Automatic 12V Lead Acid Battery Charger 842,837 246
Automatic Load Sensing Power Switch 123,996 15 *
Car Battery Charger 799,872 159 *
Dual Polarity Power Supply 288,749 84 *
Fixed Voltage Power Supply 267,664 52 *
High Current Power Supply 283,583 64 *
High Voltage High Current Power Supply 212,145 35 *
LASER Power Supply 240,633 28
Portable CD Player Adapter For Car 168,479 12 *
Power Supply 666,895 259 *
Solid State Tesla Coil NEW! 107,431 3
Solid State Tesla Coil/High Voltage Generator 368,887 50
Transformerless Power Supply 406,127 117 *
Voltage Inverter 291,948 51 *
Voltage Inverter II 166,154 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 529,016 182
3 Watt FM Transmitter Rae XL Tkacik 283,520 81 *
50 Watt Amplifier 444,794 74
8 Note Tune Player 107,669 12 *
8 Watt Audio Amp 314,385 67 *
Aircraft Radio Communications Receiver 219,144 49 *
Crystal Radio 128,309 53 *
Digital Volume Control 284,513 47 *
Electronic Stethoscope 258,531 141 *
FET Audio Mixer 288,839 40
FM Transmitter 911,836 418
Guitar Fuzz Effect 194,090 52 *
Microphone Mixer Anatoly I. Shikhatov 202,398 26 *
Mono To Stereo Synthesizer oRbEq 90,199 18 *
One Tube Regenerative Radio NEW! 93,591 4 *
Op Amp Radio 327,727 80 *
Single Chip AM Radio NEW! 72,373 2 *
Single Chip FM Radio NEW! 120,788 1 *
Sound Level Meter 293,181 51 *
Stereo Tube Amplifier Weslee Kinsler 222,510 15 *
Tone Control 254,997 31
Transistor Organ 153,222 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,278 27 *
FM Telephone Bug 193,688 57
Phone Busy Indicator 169,616 24 *
Remote Telephone Ringer 86,761 3 *
Ringing Phone Light Flasher 170,628 33 *
Simple Phone Tap Derek Tombrello 321,360 98 *
Telephone Hold Button 89,869 9
Telephone Recorder 174,081 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.