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 24, 2014
FET Audio Mixer168
12VDC To 120VAC Inverter163
Yesterday
Wednesday, July 23, 2014
22 Watt Audio Amplifier259
12VDC To 120VAC Inverter245
Of All Time 12VDC To 120VAC Inverter1,230,065
FM Transmitter828,042

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 163,328 60 *
Car Alarm Arming Horn Beep Canceller bob 82,982 6 *
Wireless Auto Tachometer 251,725 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,156 29 *
Parallel (Printer) Port Interface 209,010 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 346,059 61 *
3 Channel Spectrum Analyzer 145,762 19
40W Fluorescent Lamp Inverter Bart Milnes 253,558 60 *
Adjustable Strobe Light 223,286 36
Black Light 190,158 29
Colour (Sound) Organ 212,524 34
Electronic Dice NEW! 119,010 8 *
Fantastic Atom Expander 130,151 24
Flash Slave Trigger 155,164 17 *
Infa-Red Remote Control 497,007 216 *
IR Remote Extender NEW! 64,007 2 *
IR Remote Jammer Carl 190,914 109 *
IR Remote Switch NEW! 92,688 9 *
LASER Transmitter/Receiver 314,967 91
LED Chaser 340,997 83 *
LED Metronome NEW! 59,648 3 *
LED Thermometer 148,725 22 *
Light/Dark Detector 230,781 89 *
Simple Colour Organ 89,731 10 *
Strobe Light 208,919 27 *
TRIAC Light Dimmer 391,438 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 276,179 122 *
Electromagnetic Levitator NEW! 83,316 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 718,705 212 *
AC Motor Speed Controller 274,649 28 *
Air Flow Detector 181,276 54 *
Digital Keypad Combination Lock 131,563 20
Low Voltage Alarm 158,720 58 *
Pine Racecar Victory Judge 58,552 1 *
Pulse Width Modulation DC Motor Control 541,361 92
Rain Detector 230,449 110 *
Simple Lie Detector 453,139 319
Simple Polarity Tester Dudley LeRoux 99,267 13 *
Simple Servo Controller 148,307 22 *
Simple Touch Switch NEW! 105,219 5 *
Simple Two Speed Contactor DC Motor Controller 146,772 21 *
Stepper Motor Controller 593,582 120 *
Time Delay Relay 437,094 85
Time Delay Relay II jawaharlal@excite.com 173,675 39 *
Touch Switch 222,867 51 *
Video Activated Relay 70,875 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 118,826 9 *
Water Detector With Sump/Bilge Pump Controller 97,700 18 *
Wire Loop Alarm Alex Meaden 150,454 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 199,861 23 *
12VDC To 120VAC Inverter 1,230,065 682
6V to 12V Converter 374,231 121
Automatic 12V Lead Acid Battery Charger 716,236 236
Automatic Load Sensing Power Switch 106,219 14 *
Car Battery Charger 736,410 158 *
Dual Polarity Power Supply 256,149 84 *
Fixed Voltage Power Supply 238,325 52 *
High Current Power Supply 246,955 64 *
High Voltage High Current Power Supply 189,579 34 *
LASER Power Supply 210,570 28
Portable CD Player Adapter For Car 148,258 12 *
Power Supply 602,001 258 *
Solid State Tesla Coil NEW! 85,332 2
Solid State Tesla Coil/High Voltage Generator 317,990 49
Transformerless Power Supply 364,601 116 *
Voltage Inverter 261,039 51 *
Voltage Inverter II 147,413 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 463,632 182
3 Watt FM Transmitter Rae XL Tkacik 249,392 77 *
50 Watt Amplifier 394,771 73
8 Note Tune Player 92,629 12 *
8 Watt Audio Amp 273,970 63 *
Aircraft Radio Communications Receiver 184,914 48 *
Crystal Radio 110,814 53 *
Digital Volume Control 258,712 46 *
Electronic Stethoscope 205,325 138 *
FET Audio Mixer 240,013 40
FM Transmitter 828,042 414
Guitar Fuzz Effect 166,751 51 *
Microphone Mixer Anatoly I. Shikhatov 176,743 25 *
Mono To Stereo Synthesizer oRbEq 71,576 16 *
One Tube Regenerative Radio NEW! 69,451 4 *
Op Amp Radio 279,444 80 *
Single Chip AM Radio NEW! 48,222 2 *
Single Chip FM Radio NEW! 86,653 0 *
Sound Level Meter 262,577 50 *
Stereo Tube Amplifier Weslee Kinsler 194,863 15 *
Tone Control 225,667 29
Transistor Organ 131,840 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 117,674 27 *
FM Telephone Bug 174,665 57
Phone Busy Indicator 133,701 22 *
Remote Telephone Ringer 75,709 3 *
Ringing Phone Light Flasher 148,830 32 *
Simple Phone Tap Derek Tombrello 297,017 98 *
Telephone Hold Button 73,864 9
Telephone Recorder 157,395 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.