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
Friday, June 14, 2024
FM Transmitter26
12VDC To 120VAC Inverter21
Yesterday
Thursday, June 13, 2024
FM Transmitter38
High Current Power Supply27
Of All Time 12VDC To 120VAC Inverter1,533,650
FM Transmitter1,011,054

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 228,053 61 *
Car Alarm Arming Horn Beep Canceller bob 137,584 6 *
Wireless Auto Tachometer 344,255 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,865 29 *
Parallel (Printer) Port Interface 287,692 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,981 63 *
3 Channel Spectrum Analyzer 223,052 20
40W Fluorescent Lamp Inverter Bart Milnes 331,339 60 *
Adjustable Strobe Light 310,299 36
Black Light 282,272 29
Colour (Sound) Organ 291,976 36
Electronic Dice NEW! 190,451 10 *
Fantastic Atom Expander 204,073 25
Flash Slave Trigger 222,409 18 *
Infa-Red Remote Control 638,592 216 *
IR Remote Extender NEW! 133,919 3 *
IR Remote Jammer Carl 267,562 110 *
IR Remote Switch NEW! 158,808 9 *
LASER Transmitter/Receiver 418,156 92
LED Chaser 447,413 83 *
LED Metronome NEW! 100,648 3 *
LED Thermometer 207,929 22 *
Light/Dark Detector 307,276 90 *
Simple Colour Organ 138,546 11 *
Strobe Light 276,977 27 *
TRIAC Light Dimmer 554,378 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 360,693 122 *
Electromagnetic Levitator NEW! 145,547 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 923,991 214 *
AC Motor Speed Controller 393,126 29 *
Air Flow Detector 253,043 54 *
Digital Keypad Combination Lock 203,459 20
Low Voltage Alarm 230,491 58 *
Pine Racecar Victory Judge 103,815 1 *
Pulse Width Modulation DC Motor Control 656,479 94
Rain Detector 305,987 112 *
Simple Lie Detector 566,073 323
Simple Polarity Tester Dudley LeRoux 166,661 13 *
Simple Servo Controller 222,726 22 *
Simple Touch Switch NEW! 171,169 6 *
Simple Two Speed Contactor DC Motor Controller 206,456 21 *
Stepper Motor Controller 748,077 120 *
Time Delay Relay 557,073 88
Time Delay Relay II jawaharlal@excite.com 248,464 39 *
Touch Switch 291,081 51 *
Video Activated Relay 122,997 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 182,662 10 *
Water Detector With Sump/Bilge Pump Controller 154,067 18 *
Wire Loop Alarm Alex Meaden 206,859 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 317,766 25 *
12VDC To 120VAC Inverter 1,533,650 691
6V to 12V Converter 529,255 121
Automatic 12V Lead Acid Battery Charger 938,891 248
Automatic Load Sensing Power Switch 168,743 16 *
Car Battery Charger 884,768 159 *
Dual Polarity Power Supply 372,675 84 *
Fixed Voltage Power Supply 312,599 52 *
High Current Power Supply 340,769 66 *
High Voltage High Current Power Supply 265,395 35 *
LASER Power Supply 297,679 28
Portable CD Player Adapter For Car 213,648 12 *
Power Supply 740,583 259 *
Solid State Tesla Coil NEW! 147,867 4
Solid State Tesla Coil/High Voltage Generator 446,136 51
Transformerless Power Supply 464,675 117 *
Voltage Inverter 340,918 51 *
Voltage Inverter II 204,609 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 586,952 182
3 Watt FM Transmitter Rae XL Tkacik 337,098 83 *
50 Watt Amplifier 509,509 74
8 Note Tune Player 141,908 12 *
8 Watt Audio Amp 374,919 67 *
Aircraft Radio Communications Receiver 280,182 49 *
Crystal Radio 160,324 53 *
Digital Volume Control 340,005 47 *
Electronic Stethoscope 322,803 142 *
FET Audio Mixer 345,076 41
FM Transmitter 1,011,054 420
Guitar Fuzz Effect 249,165 54 *
Microphone Mixer Anatoly I. Shikhatov 252,035 26 *
Mono To Stereo Synthesizer oRbEq 135,230 18 *
One Tube Regenerative Radio NEW! 144,349 4 *
Op Amp Radio 390,810 80 *
Single Chip AM Radio NEW! 101,134 3 *
Single Chip FM Radio NEW! 174,139 1 *
Sound Level Meter 343,474 51 *
Stereo Tube Amplifier Weslee Kinsler 269,820 15 *
Tone Control 311,203 31
Transistor Organ 201,189 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,788 27 *
FM Telephone Bug 236,575 57
Phone Busy Indicator 215,247 24 *
Remote Telephone Ringer 119,484 3 *
Ringing Phone Light Flasher 219,892 35 *
Simple Phone Tap Derek Tombrello 384,913 98 *
Telephone Hold Button 130,332 10
Telephone Recorder 217,860 55 *


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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.