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
Wednesday, May 23, 2018
Car Battery Charger141
12VDC To 120VAC Inverter68
Yesterday
Tuesday, May 22, 2018
7 Segment LED Counter76
Car Battery Charger57
Of All Time 12VDC To 120VAC Inverter1,411,011
FM Transmitter933,963

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,297 61 *
Car Alarm Arming Horn Beep Canceller bob 101,203 6 *
Wireless Auto Tachometer 296,967 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,576 29 *
Parallel (Printer) Port Interface 235,736 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 392,431 63 *
3 Channel Spectrum Analyzer 184,989 20
40W Fluorescent Lamp Inverter Bart Milnes 289,736 60 *
Adjustable Strobe Light 262,747 36
Black Light 224,512 29
Colour (Sound) Organ 246,859 36
Electronic Dice NEW! 150,469 10 *
Fantastic Atom Expander 160,923 25
Flash Slave Trigger 181,365 18 *
Infa-Red Remote Control 580,506 216 *
IR Remote Extender NEW! 91,154 2 *
IR Remote Jammer Carl 224,468 110 *
IR Remote Switch NEW! 121,554 9 *
LASER Transmitter/Receiver 362,591 92
LED Chaser 405,933 83 *
LED Metronome NEW! 80,445 3 *
LED Thermometer 175,624 22 *
Light/Dark Detector 274,850 90 *
Simple Colour Organ 110,587 10 *
Strobe Light 242,415 27 *
TRIAC Light Dimmer 455,132 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,525 122 *
Electromagnetic Levitator NEW! 112,000 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 857,033 214 *
AC Motor Speed Controller 337,900 29 *
Air Flow Detector 219,106 54 *
Digital Keypad Combination Lock 162,708 20
Low Voltage Alarm 192,388 58 *
Pine Racecar Victory Judge 75,060 1 *
Pulse Width Modulation DC Motor Control 609,353 93
Rain Detector 271,343 112 *
Simple Lie Detector 516,507 323
Simple Polarity Tester Dudley LeRoux 127,672 13 *
Simple Servo Controller 184,140 22 *
Simple Touch Switch NEW! 138,284 5 *
Simple Two Speed Contactor DC Motor Controller 175,145 21 *
Stepper Motor Controller 678,892 120 *
Time Delay Relay 511,336 88
Time Delay Relay II jawaharlal@excite.com 203,887 39 *
Touch Switch 255,625 51 *
Video Activated Relay 93,381 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 145,605 10 *
Water Detector With Sump/Bilge Pump Controller 119,266 18 *
Wire Loop Alarm Alex Meaden 177,019 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 267,326 25 *
12VDC To 120VAC Inverter 1,411,011 688
6V to 12V Converter 449,021 121
Automatic 12V Lead Acid Battery Charger 871,640 246
Automatic Load Sensing Power Switch 132,768 16 *
Car Battery Charger 822,976 159 *
Dual Polarity Power Supply 316,956 84 *
Fixed Voltage Power Supply 276,899 52 *
High Current Power Supply 294,247 65 *
High Voltage High Current Power Supply 220,552 35 *
LASER Power Supply 251,803 28
Portable CD Player Adapter For Car 178,566 12 *
Power Supply 685,684 259 *
Solid State Tesla Coil NEW! 116,968 4
Solid State Tesla Coil/High Voltage Generator 386,086 50
Transformerless Power Supply 417,787 117 *
Voltage Inverter 303,011 51 *
Voltage Inverter II 172,232 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 544,375 182
3 Watt FM Transmitter Rae XL Tkacik 294,743 82 *
50 Watt Amplifier 460,609 74
8 Note Tune Player 114,654 12 *
8 Watt Audio Amp 327,179 67 *
Aircraft Radio Communications Receiver 231,268 49 *
Crystal Radio 135,362 53 *
Digital Volume Control 295,391 47 *
Electronic Stethoscope 272,363 141 *
FET Audio Mixer 303,043 41
FM Transmitter 933,963 419
Guitar Fuzz Effect 204,319 52 *
Microphone Mixer Anatoly I. Shikhatov 213,607 26 *
Mono To Stereo Synthesizer oRbEq 97,466 18 *
One Tube Regenerative Radio NEW! 103,329 4 *
Op Amp Radio 342,924 80 *
Single Chip AM Radio NEW! 79,332 2 *
Single Chip FM Radio NEW! 132,031 1 *
Sound Level Meter 303,142 51 *
Stereo Tube Amplifier Weslee Kinsler 231,423 15 *
Tone Control 267,119 31
Transistor Organ 162,106 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,261 27 *
FM Telephone Bug 201,392 57
Phone Busy Indicator 183,361 24 *
Remote Telephone Ringer 92,531 3 *
Ringing Phone Light Flasher 180,650 34 *
Simple Phone Tap Derek Tombrello 328,630 98 *
Telephone Hold Button 96,821 10
Telephone Recorder 181,738 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.