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
Monday, May 27, 2019
FM Transmitter12
High Current Power Supply9
Yesterday
Sunday, May 26, 2019
6V to 12V Converter136
Sound Level Meter94
Of All Time 12VDC To 120VAC Inverter1,439,688
FM Transmitter951,496

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 198,563 61 *
Car Alarm Arming Horn Beep Canceller bob 109,711 6 *
Wireless Auto Tachometer 307,971 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 138,216 29 *
Parallel (Printer) Port Interface 247,602 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 404,311 63 *
3 Channel Spectrum Analyzer 193,653 20
40W Fluorescent Lamp Inverter Bart Milnes 298,650 60 *
Adjustable Strobe Light 273,947 36
Black Light 235,977 29
Colour (Sound) Organ 256,618 36
Electronic Dice NEW! 159,195 10 *
Fantastic Atom Expander 170,993 25
Flash Slave Trigger 190,069 18 *
Infa-Red Remote Control 595,113 216 *
IR Remote Extender NEW! 99,969 2 *
IR Remote Jammer Carl 233,167 110 *
IR Remote Switch NEW! 129,704 9 *
LASER Transmitter/Receiver 374,025 92
LED Chaser 415,544 83 *
LED Metronome NEW! 84,536 3 *
LED Thermometer 182,964 22 *
Light/Dark Detector 281,048 90 *
Simple Colour Organ 117,138 10 *
Strobe Light 249,975 27 *
TRIAC Light Dimmer 464,833 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 321,924 122 *
Electromagnetic Levitator NEW! 120,291 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 875,065 214 *
AC Motor Speed Controller 352,090 29 *
Air Flow Detector 227,371 54 *
Digital Keypad Combination Lock 171,734 20
Low Voltage Alarm 201,296 58 *
Pine Racecar Victory Judge 82,029 1 *
Pulse Width Modulation DC Motor Control 618,471 93
Rain Detector 280,843 112 *
Simple Lie Detector 529,606 323
Simple Polarity Tester Dudley LeRoux 136,315 13 *
Simple Servo Controller 194,620 22 *
Simple Touch Switch NEW! 146,363 5 *
Simple Two Speed Contactor DC Motor Controller 180,955 21 *
Stepper Motor Controller 703,764 120 *
Time Delay Relay 523,426 88
Time Delay Relay II jawaharlal@excite.com 214,498 39 *
Touch Switch 263,797 51 *
Video Activated Relay 100,664 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 154,154 10 *
Water Detector With Sump/Bilge Pump Controller 126,176 18 *
Wire Loop Alarm Alex Meaden 183,200 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 280,815 25 *
12VDC To 120VAC Inverter 1,439,688 688
6V to 12V Converter 464,228 121
Automatic 12V Lead Acid Battery Charger 888,382 246
Automatic Load Sensing Power Switch 139,932 16 *
Car Battery Charger 841,132 159 *
Dual Polarity Power Supply 346,662 84 *
Fixed Voltage Power Supply 284,089 52 *
High Current Power Supply 304,124 65 *
High Voltage High Current Power Supply 227,526 35 *
LASER Power Supply 264,222 28
Portable CD Player Adapter For Car 185,826 12 *
Power Supply 700,275 259 *
Solid State Tesla Coil NEW! 123,751 4
Solid State Tesla Coil/High Voltage Generator 401,737 50
Transformerless Power Supply 431,679 117 *
Voltage Inverter 309,188 51 *
Voltage Inverter II 177,847 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 554,255 182
3 Watt FM Transmitter Rae XL Tkacik 303,159 82 *
50 Watt Amplifier 474,459 74
8 Note Tune Player 119,857 12 *
8 Watt Audio Amp 338,692 67 *
Aircraft Radio Communications Receiver 242,345 49 *
Crystal Radio 141,723 53 *
Digital Volume Control 303,982 47 *
Electronic Stethoscope 281,531 141 *
FET Audio Mixer 312,956 41
FM Transmitter 951,496 419
Guitar Fuzz Effect 215,769 52 *
Microphone Mixer Anatoly I. Shikhatov 222,346 26 *
Mono To Stereo Synthesizer oRbEq 106,107 18 *
One Tube Regenerative Radio NEW! 111,414 4 *
Op Amp Radio 352,515 80 *
Single Chip AM Radio NEW! 83,672 2 *
Single Chip FM Radio NEW! 142,304 1 *
Sound Level Meter 312,900 51 *
Stereo Tube Amplifier Weslee Kinsler 240,418 15 *
Tone Control 277,264 31
Transistor Organ 170,277 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 141,894 27 *
FM Telephone Bug 212,280 57
Phone Busy Indicator 191,164 24 *
Remote Telephone Ringer 97,555 3 *
Ringing Phone Light Flasher 187,832 34 *
Simple Phone Tap Derek Tombrello 337,661 98 *
Telephone Hold Button 105,476 10
Telephone Recorder 189,070 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.