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
Sunday, April 19, 2015
Automatic 12V Lead Acid Battery Charger56
7 Segment LED Counter48
Yesterday
Saturday, April 18, 2015
Automatic 12V Lead Acid Battery Charger239
7 Segment LED Counter184
Of All Time 12VDC To 120VAC Inverter1,283,220
FM Transmitter865,208

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 171,212 61 *
Car Alarm Arming Horn Beep Canceller bob 87,061 6 *
Wireless Auto Tachometer 273,647 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 114,491 29 *
Parallel (Printer) Port Interface 215,550 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 358,365 62 *
3 Channel Spectrum Analyzer 155,262 19
40W Fluorescent Lamp Inverter Bart Milnes 263,009 60 *
Adjustable Strobe Light 233,245 36
Black Light 198,264 29
Colour (Sound) Organ 220,493 34
Electronic Dice NEW! 127,311 8 *
Fantastic Atom Expander 137,751 24
Flash Slave Trigger 161,541 17 *
Infa-Red Remote Control 538,107 216 *
IR Remote Extender NEW! 70,075 2 *
IR Remote Jammer Carl 200,119 110 *
IR Remote Switch NEW! 100,061 9 *
LASER Transmitter/Receiver 328,098 91
LED Chaser 373,253 83 *
LED Metronome NEW! 64,226 3 *
LED Thermometer 155,573 22 *
Light/Dark Detector 238,451 89 *
Simple Colour Organ 94,718 10 *
Strobe Light 217,644 27 *
TRIAC Light Dimmer 410,231 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 284,861 122 *
Electromagnetic Levitator NEW! 89,952 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 787,721 214 *
AC Motor Speed Controller 294,331 29 *
Air Flow Detector 192,563 54 *
Digital Keypad Combination Lock 142,844 20
Low Voltage Alarm 166,297 58 *
Pine Racecar Victory Judge 61,748 1 *
Pulse Width Modulation DC Motor Control 564,499 93
Rain Detector 244,101 111 *
Simple Lie Detector 474,739 321
Simple Polarity Tester Dudley LeRoux 105,117 13 *
Simple Servo Controller 160,185 22 *
Simple Touch Switch NEW! 114,769 5 *
Simple Two Speed Contactor DC Motor Controller 154,229 21 *
Stepper Motor Controller 619,471 120 *
Time Delay Relay 460,590 86
Time Delay Relay II jawaharlal@excite.com 181,373 39 *
Touch Switch 230,968 51 *
Video Activated Relay 75,955 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 125,200 9 *
Water Detector With Sump/Bilge Pump Controller 102,755 18 *
Wire Loop Alarm Alex Meaden 156,257 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 221,138 24 *
12VDC To 120VAC Inverter 1,283,220 684
6V to 12V Converter 392,529 121
Automatic 12V Lead Acid Battery Charger 770,182 239
Automatic Load Sensing Power Switch 111,933 14 *
Car Battery Charger 760,372 158 *
Dual Polarity Power Supply 268,160 84 *
Fixed Voltage Power Supply 249,192 52 *
High Current Power Supply 260,668 64 *
High Voltage High Current Power Supply 196,706 34 *
LASER Power Supply 220,810 28
Portable CD Player Adapter For Car 154,214 12 *
Power Supply 630,421 258 *
Solid State Tesla Coil NEW! 93,283 3
Solid State Tesla Coil/High Voltage Generator 338,028 49
Transformerless Power Supply 380,818 116 *
Voltage Inverter 271,402 51 *
Voltage Inverter II 154,988 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 500,812 182
3 Watt FM Transmitter Rae XL Tkacik 260,801 80 *
50 Watt Amplifier 414,756 73
8 Note Tune Player 97,297 12 *
8 Watt Audio Amp 289,499 66 *
Aircraft Radio Communications Receiver 197,913 49 *
Crystal Radio 116,449 53 *
Digital Volume Control 267,165 46 *
Electronic Stethoscope 232,323 139 *
FET Audio Mixer 268,800 40
FM Transmitter 865,208 418
Guitar Fuzz Effect 176,730 51 *
Microphone Mixer Anatoly I. Shikhatov 185,517 25 *
Mono To Stereo Synthesizer oRbEq 78,208 17 *
One Tube Regenerative Radio NEW! 77,949 4 *
Op Amp Radio 300,810 80 *
Single Chip AM Radio NEW! 52,973 2 *
Single Chip FM Radio NEW! 99,084 0 *
Sound Level Meter 272,342 51 *
Stereo Tube Amplifier Weslee Kinsler 209,130 15 *
Tone Control 236,519 30
Transistor Organ 138,718 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 122,013 27 *
FM Telephone Bug 181,979 57
Phone Busy Indicator 145,756 24 *
Remote Telephone Ringer 78,861 3 *
Ringing Phone Light Flasher 156,169 32 *
Simple Phone Tap Derek Tombrello 306,321 98 *
Telephone Hold Button 78,228 9
Telephone Recorder 162,932 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.