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
Sunday, March 29, 2015
12VDC To 120VAC Inverter54
Automatic 12V Lead Acid Battery Charger53
Yesterday
Saturday, March 28, 2015
7 Segment LED Counter212
Automatic 12V Lead Acid Battery Charger181
Of All Time 12VDC To 120VAC Inverter1,279,369
FM Transmitter862,755

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 170,611 61 *
Car Alarm Arming Horn Beep Canceller bob 86,851 6 *
Wireless Auto Tachometer 272,696 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 114,071 29 *
Parallel (Printer) Port Interface 215,124 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 357,641 62 *
3 Channel Spectrum Analyzer 154,475 19
40W Fluorescent Lamp Inverter Bart Milnes 262,428 60 *
Adjustable Strobe Light 232,547 36
Black Light 197,755 29
Colour (Sound) Organ 219,974 34
Electronic Dice NEW! 126,718 8 *
Fantastic Atom Expander 137,265 24
Flash Slave Trigger 161,198 17 *
Infa-Red Remote Control 535,870 216 *
IR Remote Extender NEW! 69,687 2 *
IR Remote Jammer Carl 199,626 110 *
IR Remote Switch NEW! 99,582 9 *
LASER Transmitter/Receiver 327,195 91
LED Chaser 371,935 83 *
LED Metronome NEW! 63,955 3 *
LED Thermometer 155,073 22 *
Light/Dark Detector 237,929 89 *
Simple Colour Organ 94,073 10 *
Strobe Light 216,802 27 *
TRIAC Light Dimmer 409,329 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 283,914 122 *
Electromagnetic Levitator NEW! 89,444 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 784,173 214 *
AC Motor Speed Controller 292,845 29 *
Air Flow Detector 191,908 54 *
Digital Keypad Combination Lock 142,274 20
Low Voltage Alarm 165,765 58 *
Pine Racecar Victory Judge 61,564 1 *
Pulse Width Modulation DC Motor Control 562,959 93
Rain Detector 243,269 111 *
Simple Lie Detector 473,682 321
Simple Polarity Tester Dudley LeRoux 104,735 13 *
Simple Servo Controller 159,505 22 *
Simple Touch Switch NEW! 114,127 5 *
Simple Two Speed Contactor DC Motor Controller 153,765 21 *
Stepper Motor Controller 617,903 120 *
Time Delay Relay 459,143 86
Time Delay Relay II jawaharlal@excite.com 180,881 39 *
Touch Switch 230,524 51 *
Video Activated Relay 75,687 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 124,838 9 *
Water Detector With Sump/Bilge Pump Controller 102,493 18 *
Wire Loop Alarm Alex Meaden 155,940 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 219,547 24 *
12VDC To 120VAC Inverter 1,279,369 684
6V to 12V Converter 391,143 121
Automatic 12V Lead Acid Battery Charger 765,910 239
Automatic Load Sensing Power Switch 111,454 14 *
Car Battery Charger 758,911 158 *
Dual Polarity Power Supply 267,353 84 *
Fixed Voltage Power Supply 248,427 52 *
High Current Power Supply 259,339 64 *
High Voltage High Current Power Supply 196,250 34 *
LASER Power Supply 220,185 28
Portable CD Player Adapter For Car 153,835 12 *
Power Supply 628,801 258 *
Solid State Tesla Coil NEW! 92,721 3
Solid State Tesla Coil/High Voltage Generator 336,945 49
Transformerless Power Supply 379,662 116 *
Voltage Inverter 270,720 51 *
Voltage Inverter II 154,343 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 499,590 182
3 Watt FM Transmitter Rae XL Tkacik 260,125 80 *
50 Watt Amplifier 413,767 73
8 Note Tune Player 96,978 12 *
8 Watt Audio Amp 288,612 66 *
Aircraft Radio Communications Receiver 196,855 49 *
Crystal Radio 116,070 53 *
Digital Volume Control 266,619 46 *
Electronic Stethoscope 230,844 139 *
FET Audio Mixer 268,107 40
FM Transmitter 862,755 418
Guitar Fuzz Effect 176,142 51 *
Microphone Mixer Anatoly I. Shikhatov 184,964 25 *
Mono To Stereo Synthesizer oRbEq 77,948 17 *
One Tube Regenerative Radio NEW! 77,470 4 *
Op Amp Radio 299,387 80 *
Single Chip AM Radio NEW! 52,687 2 *
Single Chip FM Radio NEW! 98,393 0 *
Sound Level Meter 271,675 51 *
Stereo Tube Amplifier Weslee Kinsler 208,649 15 *
Tone Control 235,821 30
Transistor Organ 138,298 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 121,772 27 *
FM Telephone Bug 181,573 57
Phone Busy Indicator 144,779 24 *
Remote Telephone Ringer 78,642 3 *
Ringing Phone Light Flasher 155,692 32 *
Simple Phone Tap Derek Tombrello 305,808 98 *
Telephone Hold Button 77,947 9
Telephone Recorder 162,601 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.