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, May 25, 2015
Automatic 12V Lead Acid Battery Charger43
FM Transmitter33
Yesterday
Sunday, May 24, 2015
Automatic 12V Lead Acid Battery Charger171
12VDC To 120VAC Inverter146
Of All Time 12VDC To 120VAC Inverter1,289,649
FM Transmitter868,337

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 171,902 61 *
Car Alarm Arming Horn Beep Canceller bob 87,499 6 *
Wireless Auto Tachometer 274,651 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 115,201 29 *
Parallel (Printer) Port Interface 216,215 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 359,754 62 *
3 Channel Spectrum Analyzer 156,508 19
40W Fluorescent Lamp Inverter Bart Milnes 263,951 60 *
Adjustable Strobe Light 234,481 36
Black Light 199,165 29
Colour (Sound) Organ 221,383 34
Electronic Dice NEW! 128,321 8 *
Fantastic Atom Expander 138,492 24
Flash Slave Trigger 162,178 17 *
Infa-Red Remote Control 541,699 216 *
IR Remote Extender NEW! 70,974 2 *
IR Remote Jammer Carl 200,879 110 *
IR Remote Switch NEW! 100,856 9 *
LASER Transmitter/Receiver 329,567 91
LED Chaser 375,456 83 *
LED Metronome NEW! 64,787 3 *
LED Thermometer 156,247 22 *
Light/Dark Detector 239,634 89 *
Simple Colour Organ 95,230 10 *
Strobe Light 219,127 27 *
TRIAC Light Dimmer 411,863 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 286,841 122 *
Electromagnetic Levitator NEW! 90,732 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 792,946 214 *
AC Motor Speed Controller 296,159 29 *
Air Flow Detector 193,511 54 *
Digital Keypad Combination Lock 143,781 20
Low Voltage Alarm 167,227 58 *
Pine Racecar Victory Judge 62,135 1 *
Pulse Width Modulation DC Motor Control 567,084 93
Rain Detector 245,759 111 *
Simple Lie Detector 476,539 321
Simple Polarity Tester Dudley LeRoux 105,801 13 *
Simple Servo Controller 161,375 22 *
Simple Touch Switch NEW! 115,723 5 *
Simple Two Speed Contactor DC Motor Controller 154,903 21 *
Stepper Motor Controller 621,972 120 *
Time Delay Relay 463,152 86
Time Delay Relay II jawaharlal@excite.com 182,123 39 *
Touch Switch 231,786 51 *
Video Activated Relay 76,491 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 125,828 9 *
Water Detector With Sump/Bilge Pump Controller 103,250 18 *
Wire Loop Alarm Alex Meaden 156,891 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 223,528 24 *
12VDC To 120VAC Inverter 1,289,649 684
6V to 12V Converter 395,241 121
Automatic 12V Lead Acid Battery Charger 776,764 239
Automatic Load Sensing Power Switch 112,640 14 *
Car Battery Charger 762,700 158 *
Dual Polarity Power Supply 269,411 84 *
Fixed Voltage Power Supply 250,302 52 *
High Current Power Supply 262,687 64 *
High Voltage High Current Power Supply 197,452 34 *
LASER Power Supply 221,811 28
Portable CD Player Adapter For Car 154,917 12 *
Power Supply 632,929 258 *
Solid State Tesla Coil NEW! 94,172 3
Solid State Tesla Coil/High Voltage Generator 339,828 49
Transformerless Power Supply 382,643 116 *
Voltage Inverter 272,513 51 *
Voltage Inverter II 155,755 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 502,838 182
3 Watt FM Transmitter Rae XL Tkacik 262,095 80 *
50 Watt Amplifier 416,443 73
8 Note Tune Player 97,821 12 *
8 Watt Audio Amp 290,907 66 *
Aircraft Radio Communications Receiver 199,465 49 *
Crystal Radio 117,254 53 *
Digital Volume Control 268,165 46 *
Electronic Stethoscope 234,493 139 *
FET Audio Mixer 269,955 40
FM Transmitter 868,337 418
Guitar Fuzz Effect 177,764 51 *
Microphone Mixer Anatoly I. Shikhatov 186,535 25 *
Mono To Stereo Synthesizer oRbEq 78,712 17 *
One Tube Regenerative Radio NEW! 78,715 4 *
Op Amp Radio 303,177 80 *
Single Chip AM Radio NEW! 62,496 2 *
Single Chip FM Radio NEW! 105,549 0 *
Sound Level Meter 273,518 51 *
Stereo Tube Amplifier Weslee Kinsler 209,895 15 *
Tone Control 237,635 30
Transistor Organ 139,496 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 122,459 27 *
FM Telephone Bug 182,588 57
Phone Busy Indicator 147,021 24 *
Remote Telephone Ringer 79,198 3 *
Ringing Phone Light Flasher 156,936 32 *
Simple Phone Tap Derek Tombrello 307,044 98 *
Telephone Hold Button 78,712 9
Telephone Recorder 163,593 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.