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
Wednesday, March 04, 2015
Automatic 12V Lead Acid Battery Charger164
12VDC To 120VAC Inverter111
Yesterday
Tuesday, March 03, 2015
Automatic 12V Lead Acid Battery Charger214
TRIAC Light Dimmer203
Of All Time 12VDC To 120VAC Inverter1,274,503
FM Transmitter859,228

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 169,964 61 *
Car Alarm Arming Horn Beep Canceller bob 86,535 6 *
Wireless Auto Tachometer 270,930 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 113,336 29 *
Parallel (Printer) Port Interface 214,458 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 356,379 62 *
3 Channel Spectrum Analyzer 153,513 19
40W Fluorescent Lamp Inverter Bart Milnes 261,503 60 *
Adjustable Strobe Light 231,632 36
Black Light 196,848 29
Colour (Sound) Organ 219,112 34
Electronic Dice NEW! 125,783 8 *
Fantastic Atom Expander 136,464 24
Flash Slave Trigger 159,925 17 *
Infa-Red Remote Control 532,530 216 *
IR Remote Extender NEW! 69,125 2 *
IR Remote Jammer Carl 198,226 110 *
IR Remote Switch NEW! 98,868 9 *
LASER Transmitter/Receiver 325,924 91
LED Chaser 370,217 83 *
LED Metronome NEW! 63,354 3 *
LED Thermometer 154,286 22 *
Light/Dark Detector 237,087 89 *
Simple Colour Organ 93,243 10 *
Strobe Light 215,213 27 *
TRIAC Light Dimmer 407,737 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 282,249 122 *
Electromagnetic Levitator NEW! 88,828 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 778,332 214 *
AC Motor Speed Controller 291,173 29 *
Air Flow Detector 190,945 54 *
Digital Keypad Combination Lock 141,480 20
Low Voltage Alarm 164,956 58 *
Pine Racecar Victory Judge 61,204 1 *
Pulse Width Modulation DC Motor Control 560,469 93
Rain Detector 241,478 111 *
Simple Lie Detector 472,075 321
Simple Polarity Tester Dudley LeRoux 104,127 13 *
Simple Servo Controller 158,458 22 *
Simple Touch Switch NEW! 113,164 5 *
Simple Two Speed Contactor DC Motor Controller 153,197 21 *
Stepper Motor Controller 615,477 120 *
Time Delay Relay 457,057 86
Time Delay Relay II jawaharlal@excite.com 180,122 39 *
Touch Switch 229,721 51 *
Video Activated Relay 75,163 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 124,339 9 *
Water Detector With Sump/Bilge Pump Controller 101,964 18 *
Wire Loop Alarm Alex Meaden 155,355 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 217,570 24 *
12VDC To 120VAC Inverter 1,274,503 684
6V to 12V Converter 389,455 121
Automatic 12V Lead Acid Battery Charger 760,648 239
Automatic Load Sensing Power Switch 110,980 14 *
Car Battery Charger 756,624 158 *
Dual Polarity Power Supply 266,051 84 *
Fixed Voltage Power Supply 247,546 52 *
High Current Power Supply 257,148 64 *
High Voltage High Current Power Supply 195,603 34 *
LASER Power Supply 219,277 28
Portable CD Player Adapter For Car 153,378 12 *
Power Supply 626,545 258 *
Solid State Tesla Coil NEW! 92,038 3
Solid State Tesla Coil/High Voltage Generator 335,430 49
Transformerless Power Supply 378,085 116 *
Voltage Inverter 269,737 51 *
Voltage Inverter II 153,679 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 497,680 182
3 Watt FM Transmitter Rae XL Tkacik 259,160 80 *
50 Watt Amplifier 411,817 73
8 Note Tune Player 96,449 12 *
8 Watt Audio Amp 286,975 66 *
Aircraft Radio Communications Receiver 195,685 49 *
Crystal Radio 115,425 53 *
Digital Volume Control 265,710 46 *
Electronic Stethoscope 228,233 139 *
FET Audio Mixer 266,985 40
FM Transmitter 859,228 418
Guitar Fuzz Effect 175,237 51 *
Microphone Mixer Anatoly I. Shikhatov 184,112 25 *
Mono To Stereo Synthesizer oRbEq 77,372 17 *
One Tube Regenerative Radio NEW! 76,867 4 *
Op Amp Radio 296,897 80 *
Single Chip AM Radio NEW! 52,272 2 *
Single Chip FM Radio NEW! 97,179 0 *
Sound Level Meter 270,699 51 *
Stereo Tube Amplifier Weslee Kinsler 207,953 15 *
Tone Control 234,782 30
Transistor Organ 137,568 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 121,383 27 *
FM Telephone Bug 180,949 57
Phone Busy Indicator 143,439 24 *
Remote Telephone Ringer 78,388 3 *
Ringing Phone Light Flasher 154,990 32 *
Simple Phone Tap Derek Tombrello 305,117 98 *
Telephone Hold Button 77,591 9
Telephone Recorder 162,085 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.