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
Tuesday, July 29, 2014
22 Watt Audio Amplifier161
FET Audio Mixer148
Yesterday
Monday, July 28, 2014
FET Audio Mixer371
22 Watt Audio Amplifier370
Of All Time 12VDC To 120VAC Inverter1,231,085
FM Transmitter828,689

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 163,508 60 *
Car Alarm Arming Horn Beep Canceller bob 83,098 6 *
Wireless Auto Tachometer 251,915 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,285 29 *
Parallel (Printer) Port Interface 209,170 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 346,314 61 *
3 Channel Spectrum Analyzer 145,977 19
40W Fluorescent Lamp Inverter Bart Milnes 253,744 60 *
Adjustable Strobe Light 223,442 36
Black Light 190,298 29
Colour (Sound) Organ 212,672 34
Electronic Dice NEW! 119,122 8 *
Fantastic Atom Expander 130,310 24
Flash Slave Trigger 155,287 17 *
Infa-Red Remote Control 497,372 216 *
IR Remote Extender NEW! 64,110 2 *
IR Remote Jammer Carl 191,048 109 *
IR Remote Switch NEW! 92,814 9 *
LASER Transmitter/Receiver 315,223 91
LED Chaser 341,225 83 *
LED Metronome NEW! 59,715 3 *
LED Thermometer 148,829 22 *
Light/Dark Detector 230,934 89 *
Simple Colour Organ 89,804 10 *
Strobe Light 209,031 27 *
TRIAC Light Dimmer 391,726 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 276,315 122 *
Electromagnetic Levitator NEW! 83,412 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 719,060 212 *
AC Motor Speed Controller 274,918 28 *
Air Flow Detector 181,438 54 *
Digital Keypad Combination Lock 131,690 20
Low Voltage Alarm 158,873 58 *
Pine Racecar Victory Judge 58,618 1 *
Pulse Width Modulation DC Motor Control 541,650 92
Rain Detector 230,633 110 *
Simple Lie Detector 453,449 319
Simple Polarity Tester Dudley LeRoux 99,367 13 *
Simple Servo Controller 148,492 22 *
Simple Touch Switch NEW! 105,373 5 *
Simple Two Speed Contactor DC Motor Controller 146,901 21 *
Stepper Motor Controller 593,926 120 *
Time Delay Relay 437,445 85
Time Delay Relay II jawaharlal@excite.com 173,808 39 *
Touch Switch 222,994 51 *
Video Activated Relay 70,957 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 118,949 9 *
Water Detector With Sump/Bilge Pump Controller 97,801 18 *
Wire Loop Alarm Alex Meaden 150,557 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 200,255 23 *
12VDC To 120VAC Inverter 1,231,085 682
6V to 12V Converter 374,555 121
Automatic 12V Lead Acid Battery Charger 717,038 236
Automatic Load Sensing Power Switch 106,331 14 *
Car Battery Charger 736,756 158 *
Dual Polarity Power Supply 256,352 84 *
Fixed Voltage Power Supply 238,522 52 *
High Current Power Supply 247,175 64 *
High Voltage High Current Power Supply 189,723 34 *
LASER Power Supply 210,766 28
Portable CD Player Adapter For Car 148,409 12 *
Power Supply 602,453 258 *
Solid State Tesla Coil NEW! 85,471 2
Solid State Tesla Coil/High Voltage Generator 318,392 49
Transformerless Power Supply 364,882 116 *
Voltage Inverter 261,217 51 *
Voltage Inverter II 147,546 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 465,183 182
3 Watt FM Transmitter Rae XL Tkacik 249,653 77 *
50 Watt Amplifier 395,007 73
8 Note Tune Player 92,712 12 *
8 Watt Audio Amp 274,271 63 *
Aircraft Radio Communications Receiver 185,222 48 *
Crystal Radio 110,930 53 *
Digital Volume Control 258,891 46 *
Electronic Stethoscope 205,522 138 *
FET Audio Mixer 241,562 40
FM Transmitter 828,689 414
Guitar Fuzz Effect 166,981 51 *
Microphone Mixer Anatoly I. Shikhatov 176,970 25 *
Mono To Stereo Synthesizer oRbEq 71,696 16 *
One Tube Regenerative Radio NEW! 69,605 4 *
Op Amp Radio 279,743 80 *
Single Chip AM Radio NEW! 48,303 2 *
Single Chip FM Radio NEW! 86,817 0 *
Sound Level Meter 262,731 50 *
Stereo Tube Amplifier Weslee Kinsler 194,995 15 *
Tone Control 225,810 29
Transistor Organ 131,983 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 117,760 27 *
FM Telephone Bug 174,788 57
Phone Busy Indicator 133,868 22 *
Remote Telephone Ringer 75,777 3 *
Ringing Phone Light Flasher 148,990 32 *
Simple Phone Tap Derek Tombrello 297,228 98 *
Telephone Hold Button 73,968 9
Telephone Recorder 157,495 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.