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
Tuesday, July 25, 2017
Dual Polarity Power Supply79
Automatic 12V Lead Acid Battery Charger54
Yesterday
Monday, July 24, 2017
Dual Polarity Power Supply109
12VDC To 120VAC Inverter67
Of All Time 12VDC To 120VAC Inverter1,384,638
FM Transmitter919,828

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 184,393 61 *
Car Alarm Arming Horn Beep Canceller bob 96,735 6 *
Wireless Auto Tachometer 291,279 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 128,163 29 *
Parallel (Printer) Port Interface 230,633 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 385,105 62 *
3 Channel Spectrum Analyzer 178,012 20
40W Fluorescent Lamp Inverter Bart Milnes 284,030 60 *
Adjustable Strobe Light 255,969 36
Black Light 218,248 29
Colour (Sound) Organ 240,582 36
Electronic Dice NEW! 145,961 9 *
Fantastic Atom Expander 154,950 25
Flash Slave Trigger 176,475 17 *
Infa-Red Remote Control 572,818 216 *
IR Remote Extender NEW! 85,831 2 *
IR Remote Jammer Carl 218,539 110 *
IR Remote Switch NEW! 115,845 9 *
LASER Transmitter/Receiver 356,033 92
LED Chaser 398,604 83 *
LED Metronome NEW! 76,411 3 *
LED Thermometer 169,993 22 *
Light/Dark Detector 268,525 89 *
Simple Colour Organ 106,606 10 *
Strobe Light 237,567 27 *
TRIAC Light Dimmer 446,861 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 305,795 122 *
Electromagnetic Levitator NEW! 106,580 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 845,173 214 *
AC Motor Speed Controller 328,724 29 *
Air Flow Detector 213,665 54 *
Digital Keypad Combination Lock 157,501 20
Low Voltage Alarm 186,119 58 *
Pine Racecar Victory Judge 71,094 1 *
Pulse Width Modulation DC Motor Control 600,853 93
Rain Detector 266,143 112 *
Simple Lie Detector 508,374 323
Simple Polarity Tester Dudley LeRoux 122,343 13 *
Simple Servo Controller 178,162 22 *
Simple Touch Switch NEW! 133,479 5 *
Simple Two Speed Contactor DC Motor Controller 170,290 21 *
Stepper Motor Controller 663,242 120 *
Time Delay Relay 501,591 88
Time Delay Relay II jawaharlal@excite.com 198,340 39 *
Touch Switch 249,715 51 *
Video Activated Relay 88,929 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 140,347 10 *
Water Detector With Sump/Bilge Pump Controller 114,084 18 *
Wire Loop Alarm Alex Meaden 171,979 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 258,733 25 *
12VDC To 120VAC Inverter 1,384,638 687
6V to 12V Converter 436,313 121
Automatic 12V Lead Acid Battery Charger 853,563 246
Automatic Load Sensing Power Switch 127,471 15 *
Car Battery Charger 807,573 159 *
Dual Polarity Power Supply 295,897 84 *
Fixed Voltage Power Supply 271,201 52 *
High Current Power Supply 287,922 64 *
High Voltage High Current Power Supply 215,421 35 *
LASER Power Supply 244,872 28
Portable CD Player Adapter For Car 172,596 12 *
Power Supply 673,924 259 *
Solid State Tesla Coil NEW! 110,599 3
Solid State Tesla Coil/High Voltage Generator 375,711 50
Transformerless Power Supply 410,736 117 *
Voltage Inverter 296,573 51 *
Voltage Inverter II 168,253 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 534,664 182
3 Watt FM Transmitter Rae XL Tkacik 287,400 81 *
50 Watt Amplifier 450,430 74
8 Note Tune Player 110,217 12 *
8 Watt Audio Amp 319,233 67 *
Aircraft Radio Communications Receiver 223,887 49 *
Crystal Radio 131,042 53 *
Digital Volume Control 288,525 47 *
Electronic Stethoscope 264,142 141 *
FET Audio Mixer 293,824 40
FM Transmitter 919,828 418
Guitar Fuzz Effect 197,924 52 *
Microphone Mixer Anatoly I. Shikhatov 206,702 26 *
Mono To Stereo Synthesizer oRbEq 92,799 18 *
One Tube Regenerative Radio NEW! 97,474 4 *
Op Amp Radio 332,858 80 *
Single Chip AM Radio NEW! 75,109 2 *
Single Chip FM Radio NEW! 125,556 1 *
Sound Level Meter 296,648 51 *
Stereo Tube Amplifier Weslee Kinsler 225,679 15 *
Tone Control 259,446 31
Transistor Organ 156,388 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 132,674 27 *
FM Telephone Bug 196,353 57
Phone Busy Indicator 175,068 24 *
Remote Telephone Ringer 88,707 3 *
Ringing Phone Light Flasher 174,389 33 *
Simple Phone Tap Derek Tombrello 324,000 98 *
Telephone Hold Button 92,793 9
Telephone Recorder 176,956 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.