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
Thursday, April 28, 2016
Automatic 12V Lead Acid Battery Charger107
12VDC To 120VAC Inverter105
Yesterday
Wednesday, April 27, 2016
12VDC To 120VAC Inverter113
Automatic 12V Lead Acid Battery Charger94
Of All Time 12VDC To 120VAC Inverter1,339,123
FM Transmitter896,138

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 177,920 61 *
Car Alarm Arming Horn Beep Canceller bob 91,969 6 *
Wireless Auto Tachometer 283,185 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 121,631 29 *
Parallel (Printer) Port Interface 223,614 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 372,804 62 *
3 Channel Spectrum Analyzer 167,447 20
40W Fluorescent Lamp Inverter Bart Milnes 274,602 60 *
Adjustable Strobe Light 245,465 36
Black Light 208,631 29
Colour (Sound) Organ 231,279 35
Electronic Dice NEW! 136,906 8 *
Fantastic Atom Expander 146,341 25
Flash Slave Trigger 169,090 17 *
Infa-Red Remote Control 559,598 216 *
IR Remote Extender NEW! 78,176 2 *
IR Remote Jammer Carl 209,307 110 *
IR Remote Switch NEW! 109,063 9 *
LASER Transmitter/Receiver 343,140 91
LED Chaser 387,851 83 *
LED Metronome NEW! 70,395 3 *
LED Thermometer 162,864 22 *
Light/Dark Detector 253,704 89 *
Simple Colour Organ 100,601 10 *
Strobe Light 229,929 27 *
TRIAC Light Dimmer 433,797 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 298,173 122 *
Electromagnetic Levitator NEW! 97,927 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 824,164 214 *
AC Motor Speed Controller 312,128 29 *
Air Flow Detector 204,005 54 *
Digital Keypad Combination Lock 150,280 20
Low Voltage Alarm 175,682 58 *
Pine Racecar Victory Judge 65,894 1 *
Pulse Width Modulation DC Motor Control 585,024 93
Rain Detector 257,067 112 *
Simple Lie Detector 494,534 323
Simple Polarity Tester Dudley LeRoux 114,235 13 *
Simple Servo Controller 169,841 22 *
Simple Touch Switch NEW! 125,418 5 *
Simple Two Speed Contactor DC Motor Controller 162,740 21 *
Stepper Motor Controller 643,020 120 *
Time Delay Relay 483,881 86
Time Delay Relay II jawaharlal@excite.com 189,586 39 *
Touch Switch 241,431 51 *
Video Activated Relay 82,336 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 132,794 10 *
Water Detector With Sump/Bilge Pump Controller 108,774 18 *
Wire Loop Alarm Alex Meaden 164,350 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 241,078 25 *
12VDC To 120VAC Inverter 1,339,123 686
6V to 12V Converter 417,778 121
Automatic 12V Lead Acid Battery Charger 820,864 243
Automatic Load Sensing Power Switch 119,294 15 *
Car Battery Charger 786,406 159 *
Dual Polarity Power Supply 281,226 84 *
Fixed Voltage Power Supply 261,150 52 *
High Current Power Supply 276,165 64 *
High Voltage High Current Power Supply 206,634 35 *
LASER Power Supply 233,077 28
Portable CD Player Adapter For Car 162,749 12 *
Power Supply 653,263 259 *
Solid State Tesla Coil NEW! 102,487 3
Solid State Tesla Coil/High Voltage Generator 357,194 49
Transformerless Power Supply 397,459 116 *
Voltage Inverter 284,491 51 *
Voltage Inverter II 162,560 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 519,417 182
3 Watt FM Transmitter Rae XL Tkacik 275,976 81 *
50 Watt Amplifier 434,671 74
8 Note Tune Player 103,752 12 *
8 Watt Audio Amp 305,724 67 *
Aircraft Radio Communications Receiver 212,142 49 *
Crystal Radio 123,996 53 *
Digital Volume Control 278,137 46 *
Electronic Stethoscope 250,856 141 *
FET Audio Mixer 281,594 40
FM Transmitter 896,138 418
Guitar Fuzz Effect 187,766 52 *
Microphone Mixer Anatoly I. Shikhatov 196,196 25 *
Mono To Stereo Synthesizer oRbEq 86,120 17 *
One Tube Regenerative Radio NEW! 87,901 4 *
Op Amp Radio 319,344 80 *
Single Chip AM Radio NEW! 68,705 2 *
Single Chip FM Radio NEW! 115,307 0 *
Sound Level Meter 287,125 51 *
Stereo Tube Amplifier Weslee Kinsler 217,955 15 *
Tone Control 248,446 31
Transistor Organ 148,127 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 127,169 27 *
FM Telephone Bug 189,704 57
Phone Busy Indicator 161,033 24 *
Remote Telephone Ringer 83,784 3 *
Ringing Phone Light Flasher 164,787 33 *
Simple Phone Tap Derek Tombrello 316,337 98 *
Telephone Hold Button 85,294 9
Telephone Recorder 169,758 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.