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, June 29, 2022
12VDC To 120VAC Inverter25
Automatic 12V Lead Acid Battery Charger19
Yesterday
Tuesday, June 28, 2022
12VDC To 120VAC Inverter35
12V To 24V DC-DC Converter34
Of All Time 12VDC To 120VAC Inverter1,502,592
FM Transmitter992,577

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 221,666 61 *
Car Alarm Arming Horn Beep Canceller bob 131,793 6 *
Wireless Auto Tachometer 336,717 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 155,344 29 *
Parallel (Printer) Port Interface 278,262 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 440,212 63 *
3 Channel Spectrum Analyzer 215,065 20
40W Fluorescent Lamp Inverter Bart Milnes 324,304 60 *
Adjustable Strobe Light 301,958 36
Black Light 270,248 29
Colour (Sound) Organ 283,592 36
Electronic Dice NEW! 183,309 10 *
Fantastic Atom Expander 197,990 25
Flash Slave Trigger 214,772 18 *
Infa-Red Remote Control 626,906 216 *
IR Remote Extender NEW! 126,476 2 *
IR Remote Jammer Carl 258,745 110 *
IR Remote Switch NEW! 152,770 9 *
LASER Transmitter/Receiver 406,051 92
LED Chaser 438,188 83 *
LED Metronome NEW! 95,024 3 *
LED Thermometer 201,782 22 *
Light/Dark Detector 301,144 90 *
Simple Colour Organ 133,109 10 *
Strobe Light 269,496 27 *
TRIAC Light Dimmer 543,612 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 353,155 122 *
Electromagnetic Levitator NEW! 139,090 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 913,764 214 *
AC Motor Speed Controller 380,765 29 *
Air Flow Detector 246,452 54 *
Digital Keypad Combination Lock 191,757 20
Low Voltage Alarm 223,929 58 *
Pine Racecar Victory Judge 98,709 1 *
Pulse Width Modulation DC Motor Control 641,658 94
Rain Detector 299,344 112 *
Simple Lie Detector 554,071 323
Simple Polarity Tester Dudley LeRoux 160,111 13 *
Simple Servo Controller 215,796 22 *
Simple Touch Switch NEW! 164,374 5 *
Simple Two Speed Contactor DC Motor Controller 199,646 21 *
Stepper Motor Controller 735,864 120 *
Time Delay Relay 549,171 88
Time Delay Relay II jawaharlal@excite.com 239,823 39 *
Touch Switch 284,130 51 *
Video Activated Relay 117,056 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 174,554 10 *
Water Detector With Sump/Bilge Pump Controller 147,771 18 *
Wire Loop Alarm Alex Meaden 200,841 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 306,545 25 *
12VDC To 120VAC Inverter 1,502,592 690
6V to 12V Converter 518,293 121
Automatic 12V Lead Acid Battery Charger 926,979 248
Automatic Load Sensing Power Switch 161,579 16 *
Car Battery Charger 873,815 159 *
Dual Polarity Power Supply 364,410 84 *
Fixed Voltage Power Supply 304,636 52 *
High Current Power Supply 330,087 66 *
High Voltage High Current Power Supply 246,984 35 *
LASER Power Supply 288,833 28
Portable CD Player Adapter For Car 206,466 12 *
Power Supply 729,694 259 *
Solid State Tesla Coil NEW! 139,568 4
Solid State Tesla Coil/High Voltage Generator 434,710 51
Transformerless Power Supply 456,374 117 *
Voltage Inverter 330,711 51 *
Voltage Inverter II 196,033 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 578,468 182
3 Watt FM Transmitter Rae XL Tkacik 326,979 83 *
50 Watt Amplifier 499,936 74
8 Note Tune Player 136,173 12 *
8 Watt Audio Amp 364,886 67 *
Aircraft Radio Communications Receiver 269,935 49 *
Crystal Radio 154,046 53 *
Digital Volume Control 326,526 47 *
Electronic Stethoscope 307,503 142 *
FET Audio Mixer 336,614 41
FM Transmitter 992,577 420
Guitar Fuzz Effect 239,794 54 *
Microphone Mixer Anatoly I. Shikhatov 244,465 26 *
Mono To Stereo Synthesizer oRbEq 127,640 18 *
One Tube Regenerative Radio NEW! 130,648 4 *
Op Amp Radio 379,146 80 *
Single Chip AM Radio NEW! 94,966 2 *
Single Chip FM Radio NEW! 165,228 1 *
Sound Level Meter 335,094 51 *
Stereo Tube Amplifier Weslee Kinsler 261,901 15 *
Tone Control 303,138 31
Transistor Organ 192,918 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 159,130 27 *
FM Telephone Bug 231,269 57
Phone Busy Indicator 209,371 24 *
Remote Telephone Ringer 114,163 3 *
Ringing Phone Light Flasher 210,478 35 *
Simple Phone Tap Derek Tombrello 378,739 98 *
Telephone Hold Button 124,298 10
Telephone Recorder 211,689 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.