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
Thursday, June 20, 2019
3 Watt FM Transmitter46
7 Segment LED Counter40
Yesterday
Wednesday, June 19, 2019
6V to 12V Converter77
Black Light54
Of All Time 12VDC To 120VAC Inverter1,442,161
FM Transmitter953,009

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 199,264 61 *
Car Alarm Arming Horn Beep Canceller bob 110,443 6 *
Wireless Auto Tachometer 308,905 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 138,753 29 *
Parallel (Printer) Port Interface 248,569 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 405,431 63 *
3 Channel Spectrum Analyzer 194,258 20
40W Fluorescent Lamp Inverter Bart Milnes 299,412 60 *
Adjustable Strobe Light 274,780 36
Black Light 237,054 29
Colour (Sound) Organ 257,444 36
Electronic Dice NEW! 159,948 10 *
Fantastic Atom Expander 171,823 25
Flash Slave Trigger 190,822 18 *
Infa-Red Remote Control 596,005 216 *
IR Remote Extender NEW! 100,772 2 *
IR Remote Jammer Carl 233,740 110 *
IR Remote Switch NEW! 130,444 9 *
LASER Transmitter/Receiver 374,941 92
LED Chaser 416,224 83 *
LED Metronome NEW! 84,843 3 *
LED Thermometer 183,463 22 *
Light/Dark Detector 281,550 90 *
Simple Colour Organ 117,563 10 *
Strobe Light 250,436 27 *
TRIAC Light Dimmer 465,576 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 322,857 122 *
Electromagnetic Levitator NEW! 120,912 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 876,403 214 *
AC Motor Speed Controller 352,868 29 *
Air Flow Detector 227,910 54 *
Digital Keypad Combination Lock 172,331 20
Low Voltage Alarm 201,824 58 *
Pine Racecar Victory Judge 82,500 1 *
Pulse Width Modulation DC Motor Control 619,124 93
Rain Detector 281,355 112 *
Simple Lie Detector 530,356 323
Simple Polarity Tester Dudley LeRoux 137,062 13 *
Simple Servo Controller 195,312 22 *
Simple Touch Switch NEW! 146,876 5 *
Simple Two Speed Contactor DC Motor Controller 181,504 21 *
Stepper Motor Controller 704,826 120 *
Time Delay Relay 524,119 88
Time Delay Relay II jawaharlal@excite.com 215,244 39 *
Touch Switch 264,315 51 *
Video Activated Relay 101,101 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 154,764 10 *
Water Detector With Sump/Bilge Pump Controller 126,642 18 *
Wire Loop Alarm Alex Meaden 183,668 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 281,613 25 *
12VDC To 120VAC Inverter 1,442,161 688
6V to 12V Converter 465,866 121
Automatic 12V Lead Acid Battery Charger 889,523 246
Automatic Load Sensing Power Switch 140,513 16 *
Car Battery Charger 842,060 159 *
Dual Polarity Power Supply 347,252 84 *
Fixed Voltage Power Supply 284,623 52 *
High Current Power Supply 304,847 65 *
High Voltage High Current Power Supply 228,080 35 *
LASER Power Supply 265,108 28
Portable CD Player Adapter For Car 186,404 12 *
Power Supply 701,163 259 *
Solid State Tesla Coil NEW! 124,194 4
Solid State Tesla Coil/High Voltage Generator 402,715 50
Transformerless Power Supply 432,359 117 *
Voltage Inverter 309,573 51 *
Voltage Inverter II 178,331 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 554,966 182
3 Watt FM Transmitter Rae XL Tkacik 303,888 82 *
50 Watt Amplifier 475,351 74
8 Note Tune Player 120,289 12 *
8 Watt Audio Amp 339,483 67 *
Aircraft Radio Communications Receiver 243,145 49 *
Crystal Radio 142,057 53 *
Digital Volume Control 304,612 47 *
Electronic Stethoscope 282,239 141 *
FET Audio Mixer 313,633 41
FM Transmitter 953,009 419
Guitar Fuzz Effect 216,496 52 *
Microphone Mixer Anatoly I. Shikhatov 223,006 26 *
Mono To Stereo Synthesizer oRbEq 106,721 18 *
One Tube Regenerative Radio NEW! 111,865 4 *
Op Amp Radio 353,328 80 *
Single Chip AM Radio NEW! 83,986 2 *
Single Chip FM Radio NEW! 143,015 1 *
Sound Level Meter 313,743 51 *
Stereo Tube Amplifier Weslee Kinsler 241,134 15 *
Tone Control 277,989 31
Transistor Organ 170,904 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 142,365 27 *
FM Telephone Bug 212,884 57
Phone Busy Indicator 191,715 24 *
Remote Telephone Ringer 97,991 3 *
Ringing Phone Light Flasher 188,550 34 *
Simple Phone Tap Derek Tombrello 338,253 98 *
Telephone Hold Button 106,088 10
Telephone Recorder 189,726 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.