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, July 30, 2015
Automatic 12V Lead Acid Battery Charger44
TRIAC Light Dimmer38
Yesterday
Wednesday, July 29, 2015
6V to 12V Converter173
Automatic 12V Lead Acid Battery Charger153
Of All Time 12VDC To 120VAC Inverter1,299,666
FM Transmitter873,597

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 173,100 61 *
Car Alarm Arming Horn Beep Canceller bob 88,261 6 *
Wireless Auto Tachometer 276,331 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 116,526 29 *
Parallel (Printer) Port Interface 217,543 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 362,158 62 *
3 Channel Spectrum Analyzer 158,311 19
40W Fluorescent Lamp Inverter Bart Milnes 265,894 60 *
Adjustable Strobe Light 236,588 36
Black Light 201,144 29
Colour (Sound) Organ 223,432 34
Electronic Dice NEW! 129,769 8 *
Fantastic Atom Expander 140,017 24
Flash Slave Trigger 163,360 17 *
Infa-Red Remote Control 546,070 216 *
IR Remote Extender NEW! 72,469 2 *
IR Remote Jammer Carl 202,755 110 *
IR Remote Switch NEW! 102,403 9 *
LASER Transmitter/Receiver 331,927 91
LED Chaser 378,101 83 *
LED Metronome NEW! 65,825 3 *
LED Thermometer 157,462 22 *
Light/Dark Detector 242,123 89 *
Simple Colour Organ 96,285 10 *
Strobe Light 221,610 27 *
TRIAC Light Dimmer 415,078 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 289,303 122 *
Electromagnetic Levitator NEW! 91,982 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 799,205 214 *
AC Motor Speed Controller 299,248 29 *
Air Flow Detector 195,123 54 *
Digital Keypad Combination Lock 145,089 20
Low Voltage Alarm 168,613 58 *
Pine Racecar Victory Judge 62,789 1 *
Pulse Width Modulation DC Motor Control 570,979 93
Rain Detector 248,395 111 *
Simple Lie Detector 479,489 321
Simple Polarity Tester Dudley LeRoux 107,006 13 *
Simple Servo Controller 162,977 22 *
Simple Touch Switch NEW! 117,691 5 *
Simple Two Speed Contactor DC Motor Controller 156,351 21 *
Stepper Motor Controller 626,111 120 *
Time Delay Relay 467,061 86
Time Delay Relay II jawaharlal@excite.com 183,444 39 *
Touch Switch 233,270 51 *
Video Activated Relay 77,682 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 127,050 9 *
Water Detector With Sump/Bilge Pump Controller 104,206 18 *
Wire Loop Alarm Alex Meaden 158,336 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 227,415 24 *
12VDC To 120VAC Inverter 1,299,666 684
6V to 12V Converter 399,278 121
Automatic 12V Lead Acid Battery Charger 786,817 239
Automatic Load Sensing Power Switch 113,851 14 *
Car Battery Charger 766,292 158 *
Dual Polarity Power Supply 271,636 84 *
Fixed Voltage Power Supply 252,322 52 *
High Current Power Supply 265,727 64 *
High Voltage High Current Power Supply 198,899 34 *
LASER Power Supply 223,753 28
Portable CD Player Adapter For Car 156,564 12 *
Power Supply 636,938 258 *
Solid State Tesla Coil NEW! 95,830 3
Solid State Tesla Coil/High Voltage Generator 343,011 49
Transformerless Power Supply 385,390 116 *
Voltage Inverter 274,568 51 *
Voltage Inverter II 157,085 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 505,869 182
3 Watt FM Transmitter Rae XL Tkacik 264,600 80 *
50 Watt Amplifier 419,245 73
8 Note Tune Player 99,005 12 *
8 Watt Audio Amp 293,656 66 *
Aircraft Radio Communications Receiver 201,894 49 *
Crystal Radio 118,829 53 *
Digital Volume Control 270,062 46 *
Electronic Stethoscope 237,500 139 *
FET Audio Mixer 272,216 40
FM Transmitter 873,597 418
Guitar Fuzz Effect 179,591 51 *
Microphone Mixer Anatoly I. Shikhatov 188,278 25 *
Mono To Stereo Synthesizer oRbEq 80,015 17 *
One Tube Regenerative Radio NEW! 80,365 4 *
Op Amp Radio 306,840 80 *
Single Chip AM Radio NEW! 63,573 2 *
Single Chip FM Radio NEW! 107,267 0 *
Sound Level Meter 275,388 51 *
Stereo Tube Amplifier Weslee Kinsler 211,382 15 *
Tone Control 239,421 30
Transistor Organ 141,215 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 123,395 27 *
FM Telephone Bug 184,001 57
Phone Busy Indicator 148,947 24 *
Remote Telephone Ringer 79,992 3 *
Ringing Phone Light Flasher 158,268 32 *
Simple Phone Tap Derek Tombrello 309,160 98 *
Telephone Hold Button 79,862 9
Telephone Recorder 164,631 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.