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, September 03, 2015
Fantastic Atom Expander3
7 Segment LED Counter2
Yesterday
Wednesday, September 02, 2015
12VDC To 120VAC Inverter168
Automatic 12V Lead Acid Battery Charger162
Of All Time 12VDC To 120VAC Inverter1,305,480
FM Transmitter876,450

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 173,861 61 *
Car Alarm Arming Horn Beep Canceller bob 88,768 6 *
Wireless Auto Tachometer 277,125 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 117,219 29 *
Parallel (Printer) Port Interface 218,469 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 363,660 62 *
3 Channel Spectrum Analyzer 159,662 20
40W Fluorescent Lamp Inverter Bart Milnes 267,225 60 *
Adjustable Strobe Light 237,788 36
Black Light 202,293 29
Colour (Sound) Organ 224,747 35
Electronic Dice NEW! 130,745 8 *
Fantastic Atom Expander 140,953 25
Flash Slave Trigger 164,083 17 *
Infa-Red Remote Control 548,207 216 *
IR Remote Extender NEW! 73,359 2 *
IR Remote Jammer Carl 203,812 110 *
IR Remote Switch NEW! 103,496 9 *
LASER Transmitter/Receiver 333,495 91
LED Chaser 379,395 83 *
LED Metronome NEW! 66,603 3 *
LED Thermometer 158,228 22 *
Light/Dark Detector 243,253 89 *
Simple Colour Organ 97,020 10 *
Strobe Light 223,117 27 *
TRIAC Light Dimmer 416,718 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 290,709 122 *
Electromagnetic Levitator NEW! 92,772 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 802,486 214 *
AC Motor Speed Controller 301,048 29 *
Air Flow Detector 196,173 54 *
Digital Keypad Combination Lock 145,879 20
Low Voltage Alarm 169,497 58 *
Pine Racecar Victory Judge 63,240 1 *
Pulse Width Modulation DC Motor Control 573,138 93
Rain Detector 249,887 112 *
Simple Lie Detector 481,244 322
Simple Polarity Tester Dudley LeRoux 108,552 13 *
Simple Servo Controller 163,929 22 *
Simple Touch Switch NEW! 118,811 5 *
Simple Two Speed Contactor DC Motor Controller 157,348 21 *
Stepper Motor Controller 628,189 120 *
Time Delay Relay 469,248 86
Time Delay Relay II jawaharlal@excite.com 184,200 39 *
Touch Switch 234,166 51 *
Video Activated Relay 78,309 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 127,714 10 *
Water Detector With Sump/Bilge Pump Controller 104,786 18 *
Wire Loop Alarm Alex Meaden 159,298 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 229,174 25 *
12VDC To 120VAC Inverter 1,305,480 686
6V to 12V Converter 401,854 121
Automatic 12V Lead Acid Battery Charger 791,781 243
Automatic Load Sensing Power Switch 114,510 14 *
Car Battery Charger 768,501 159 *
Dual Polarity Power Supply 272,786 84 *
Fixed Voltage Power Supply 253,703 52 *
High Current Power Supply 267,350 64 *
High Voltage High Current Power Supply 199,844 35 *
LASER Power Supply 224,795 28
Portable CD Player Adapter For Car 157,444 12 *
Power Supply 639,046 259 *
Solid State Tesla Coil NEW! 96,790 3
Solid State Tesla Coil/High Voltage Generator 344,842 49
Transformerless Power Supply 387,038 116 *
Voltage Inverter 275,758 51 *
Voltage Inverter II 157,848 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 507,805 182
3 Watt FM Transmitter Rae XL Tkacik 266,219 81 *
50 Watt Amplifier 420,816 74
8 Note Tune Player 99,780 12 *
8 Watt Audio Amp 295,334 66 *
Aircraft Radio Communications Receiver 203,118 49 *
Crystal Radio 119,678 53 *
Digital Volume Control 271,267 46 *
Electronic Stethoscope 239,379 141 *
FET Audio Mixer 273,601 40
FM Transmitter 876,450 418
Guitar Fuzz Effect 180,763 52 *
Microphone Mixer Anatoly I. Shikhatov 189,383 25 *
Mono To Stereo Synthesizer oRbEq 81,002 17 *
One Tube Regenerative Radio NEW! 81,520 4 *
Op Amp Radio 308,950 80 *
Single Chip AM Radio NEW! 64,415 2 *
Single Chip FM Radio NEW! 108,277 0 *
Sound Level Meter 276,436 51 *
Stereo Tube Amplifier Weslee Kinsler 212,464 15 *
Tone Control 240,633 31
Transistor Organ 142,250 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 123,913 27 *
FM Telephone Bug 184,872 57
Phone Busy Indicator 149,864 24 *
Remote Telephone Ringer 80,545 3 *
Ringing Phone Light Flasher 159,035 33 *
Simple Phone Tap Derek Tombrello 310,068 98 *
Telephone Hold Button 80,533 9
Telephone Recorder 165,335 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.