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, April 27, 2017
12VDC To 120VAC Inverter9
Car Battery Charger6
Yesterday
Wednesday, April 26, 2017
12VDC To 120VAC Inverter106
6V to 12V Converter49
Of All Time 12VDC To 120VAC Inverter1,375,657
FM Transmitter915,927

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,798 61 *
Car Alarm Arming Horn Beep Canceller bob 95,634 6 *
Wireless Auto Tachometer 289,614 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 126,748 29 *
Parallel (Printer) Port Interface 228,984 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 382,849 62 *
3 Channel Spectrum Analyzer 176,113 20
40W Fluorescent Lamp Inverter Bart Milnes 282,071 60 *
Adjustable Strobe Light 253,843 36
Black Light 216,238 29
Colour (Sound) Organ 238,780 36
Electronic Dice NEW! 144,455 9 *
Fantastic Atom Expander 153,278 25
Flash Slave Trigger 174,799 17 *
Infa-Red Remote Control 570,579 216 *
IR Remote Extender NEW! 84,059 2 *
IR Remote Jammer Carl 216,672 110 *
IR Remote Switch NEW! 114,517 9 *
LASER Transmitter/Receiver 353,970 92
LED Chaser 396,670 83 *
LED Metronome NEW! 75,007 3 *
LED Thermometer 168,323 22 *
Light/Dark Detector 266,396 89 *
Simple Colour Organ 105,108 10 *
Strobe Light 235,847 27 *
TRIAC Light Dimmer 444,233 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 304,372 122 *
Electromagnetic Levitator NEW! 104,861 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 841,873 214 *
AC Motor Speed Controller 325,809 29 *
Air Flow Detector 211,819 54 *
Digital Keypad Combination Lock 156,200 20
Low Voltage Alarm 183,876 58 *
Pine Racecar Victory Judge 69,727 1 *
Pulse Width Modulation DC Motor Control 598,197 93
Rain Detector 264,354 112 *
Simple Lie Detector 506,147 323
Simple Polarity Tester Dudley LeRoux 120,791 13 *
Simple Servo Controller 176,582 22 *
Simple Touch Switch NEW! 131,921 5 *
Simple Two Speed Contactor DC Motor Controller 168,719 21 *
Stepper Motor Controller 659,496 120 *
Time Delay Relay 498,700 88
Time Delay Relay II jawaharlal@excite.com 196,624 39 *
Touch Switch 247,930 51 *
Video Activated Relay 87,429 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,925 10 *
Water Detector With Sump/Bilge Pump Controller 113,036 18 *
Wire Loop Alarm Alex Meaden 170,269 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 255,828 25 *
12VDC To 120VAC Inverter 1,375,657 687
6V to 12V Converter 433,031 121
Automatic 12V Lead Acid Battery Charger 848,812 246
Automatic Load Sensing Power Switch 125,615 15 *
Car Battery Charger 804,049 159 *
Dual Polarity Power Supply 290,992 84 *
Fixed Voltage Power Supply 269,543 52 *
High Current Power Supply 285,755 64 *
High Voltage High Current Power Supply 213,845 35 *
LASER Power Supply 242,889 28
Portable CD Player Adapter For Car 170,586 12 *
Power Supply 670,791 259 *
Solid State Tesla Coil NEW! 108,955 3
Solid State Tesla Coil/High Voltage Generator 372,390 50
Transformerless Power Supply 408,386 117 *
Voltage Inverter 294,320 51 *
Voltage Inverter II 167,252 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 531,915 182
3 Watt FM Transmitter Rae XL Tkacik 285,622 81 *
50 Watt Amplifier 447,758 74
8 Note Tune Player 108,932 12 *
8 Watt Audio Amp 316,908 67 *
Aircraft Radio Communications Receiver 221,485 49 *
Crystal Radio 129,659 53 *
Digital Volume Control 286,486 47 *
Electronic Stethoscope 261,484 141 *
FET Audio Mixer 291,313 40
FM Transmitter 915,927 418
Guitar Fuzz Effect 195,959 52 *
Microphone Mixer Anatoly I. Shikhatov 204,493 26 *
Mono To Stereo Synthesizer oRbEq 91,530 18 *
One Tube Regenerative Radio NEW! 95,655 4 *
Op Amp Radio 330,458 80 *
Single Chip AM Radio NEW! 73,717 2 *
Single Chip FM Radio NEW! 123,525 1 *
Sound Level Meter 295,024 51 *
Stereo Tube Amplifier Weslee Kinsler 224,101 15 *
Tone Control 257,207 31
Transistor Organ 154,764 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 131,381 27 *
FM Telephone Bug 194,966 57
Phone Busy Indicator 172,739 24 *
Remote Telephone Ringer 87,714 3 *
Ringing Phone Light Flasher 172,413 33 *
Simple Phone Tap Derek Tombrello 322,627 98 *
Telephone Hold Button 91,359 9
Telephone Recorder 175,375 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.