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
Monday, January 26, 2015
FM Transmitter353
Automatic 12V Lead Acid Battery Charger204
Yesterday
Sunday, January 25, 2015
12VDC To 120VAC Inverter195
Automatic 12V Lead Acid Battery Charger189
Of All Time 12VDC To 120VAC Inverter1,267,059
FM Transmitter853,454

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 169,095 61 *
Car Alarm Arming Horn Beep Canceller bob 85,968 6 *
Wireless Auto Tachometer 267,663 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 112,355 29 *
Parallel (Printer) Port Interface 213,513 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 354,917 62 *
3 Channel Spectrum Analyzer 152,243 19
40W Fluorescent Lamp Inverter Bart Milnes 260,110 60 *
Adjustable Strobe Light 230,253 36
Black Light 195,457 29
Colour (Sound) Organ 217,979 34
Electronic Dice NEW! 124,359 8 *
Fantastic Atom Expander 135,325 24
Flash Slave Trigger 159,121 17 *
Infa-Red Remote Control 528,304 216 *
IR Remote Extender NEW! 68,196 2 *
IR Remote Jammer Carl 196,550 110 *
IR Remote Switch NEW! 97,590 9 *
LASER Transmitter/Receiver 324,125 91
LED Chaser 366,778 83 *
LED Metronome NEW! 62,588 3 *
LED Thermometer 153,248 22 *
Light/Dark Detector 236,014 89 *
Simple Colour Organ 92,599 10 *
Strobe Light 214,164 27 *
TRIAC Light Dimmer 404,783 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 281,237 122 *
Electromagnetic Levitator NEW! 87,893 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 772,919 214 *
AC Motor Speed Controller 288,421 29 *
Air Flow Detector 189,547 54 *
Digital Keypad Combination Lock 140,062 20
Low Voltage Alarm 163,905 58 *
Pine Racecar Victory Judge 60,736 1 *
Pulse Width Modulation DC Motor Control 558,005 93
Rain Detector 239,963 111 *
Simple Lie Detector 469,225 321
Simple Polarity Tester Dudley LeRoux 103,270 13 *
Simple Servo Controller 157,133 22 *
Simple Touch Switch NEW! 111,647 5 *
Simple Two Speed Contactor DC Motor Controller 152,206 21 *
Stepper Motor Controller 611,819 120 *
Time Delay Relay 453,909 86
Time Delay Relay II jawaharlal@excite.com 179,092 39 *
Touch Switch 228,684 51 *
Video Activated Relay 74,428 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 123,415 9 *
Water Detector With Sump/Bilge Pump Controller 101,324 18 *
Wire Loop Alarm Alex Meaden 154,431 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 214,455 24 *
12VDC To 120VAC Inverter 1,267,059 684
6V to 12V Converter 386,981 121
Automatic 12V Lead Acid Battery Charger 752,881 239
Automatic Load Sensing Power Switch 110,161 14 *
Car Battery Charger 753,141 158 *
Dual Polarity Power Supply 264,311 84 *
Fixed Voltage Power Supply 246,112 52 *
High Current Power Supply 255,400 64 *
High Voltage High Current Power Supply 194,593 34 *
LASER Power Supply 217,721 28
Portable CD Player Adapter For Car 152,606 12 *
Power Supply 622,932 258 *
Solid State Tesla Coil NEW! 90,721 3
Solid State Tesla Coil/High Voltage Generator 333,198 49
Transformerless Power Supply 375,802 116 *
Voltage Inverter 268,338 51 *
Voltage Inverter II 152,714 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 494,698 182
3 Watt FM Transmitter Rae XL Tkacik 257,411 80 *
50 Watt Amplifier 408,608 73
8 Note Tune Player 95,653 12 *
8 Watt Audio Amp 284,538 66 *
Aircraft Radio Communications Receiver 193,953 49 *
Crystal Radio 114,435 53 *
Digital Volume Control 264,420 46 *
Electronic Stethoscope 225,483 139 *
FET Audio Mixer 264,996 40
FM Transmitter 853,454 418
Guitar Fuzz Effect 173,787 51 *
Microphone Mixer Anatoly I. Shikhatov 182,858 25 *
Mono To Stereo Synthesizer oRbEq 76,289 17 *
One Tube Regenerative Radio NEW! 75,735 4 *
Op Amp Radio 294,697 80 *
Single Chip AM Radio NEW! 51,491 2 *
Single Chip FM Radio NEW! 94,790 0 *
Sound Level Meter 269,189 51 *
Stereo Tube Amplifier Weslee Kinsler 206,632 15 *
Tone Control 232,807 30
Transistor Organ 136,381 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 120,710 27 *
FM Telephone Bug 180,009 57
Phone Busy Indicator 141,799 24 *
Remote Telephone Ringer 77,959 3 *
Ringing Phone Light Flasher 153,920 32 *
Simple Phone Tap Derek Tombrello 303,939 98 *
Telephone Hold Button 76,960 9
Telephone Recorder 161,369 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.