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
Friday, December 06, 2019
LED Chaser9
Computerize Your Room/Home7
Yesterday
Thursday, December 05, 2019
12VDC To 120VAC Inverter163
Ringing Phone Light Flasher142
Of All Time 12VDC To 120VAC Inverter1,453,084
FM Transmitter960,108

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 202,198 61 *
Car Alarm Arming Horn Beep Canceller bob 113,308 6 *
Wireless Auto Tachometer 314,163 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 141,406 29 *
Parallel (Printer) Port Interface 254,161 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 410,802 63 *
3 Channel Spectrum Analyzer 197,386 20
40W Fluorescent Lamp Inverter Bart Milnes 303,798 60 *
Adjustable Strobe Light 278,540 36
Black Light 241,937 29
Colour (Sound) Organ 261,130 36
Electronic Dice NEW! 163,331 10 *
Fantastic Atom Expander 175,683 25
Flash Slave Trigger 193,885 18 *
Infa-Red Remote Control 601,019 216 *
IR Remote Extender NEW! 104,779 2 *
IR Remote Jammer Carl 237,441 110 *
IR Remote Switch NEW! 133,847 9 *
LASER Transmitter/Receiver 379,486 92
LED Chaser 420,088 83 *
LED Metronome NEW! 86,838 3 *
LED Thermometer 186,635 22 *
Light/Dark Detector 284,597 90 *
Simple Colour Organ 119,683 10 *
Strobe Light 253,292 27 *
TRIAC Light Dimmer 472,233 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 327,486 122 *
Electromagnetic Levitator NEW! 123,612 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 883,987 214 *
AC Motor Speed Controller 358,526 29 *
Air Flow Detector 230,699 54 *
Digital Keypad Combination Lock 176,338 20
Low Voltage Alarm 204,985 58 *
Pine Racecar Victory Judge 85,668 1 *
Pulse Width Modulation DC Motor Control 622,876 94
Rain Detector 284,097 112 *
Simple Lie Detector 535,345 323
Simple Polarity Tester Dudley LeRoux 140,325 13 *
Simple Servo Controller 199,229 22 *
Simple Touch Switch NEW! 149,323 5 *
Simple Two Speed Contactor DC Motor Controller 184,409 21 *
Stepper Motor Controller 710,262 120 *
Time Delay Relay 529,002 88
Time Delay Relay II jawaharlal@excite.com 218,570 39 *
Touch Switch 267,295 51 *
Video Activated Relay 103,318 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 158,133 10 *
Water Detector With Sump/Bilge Pump Controller 129,324 18 *
Wire Loop Alarm Alex Meaden 186,251 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 286,856 25 *
12VDC To 120VAC Inverter 1,453,084 689
6V to 12V Converter 480,496 121
Automatic 12V Lead Acid Battery Charger 897,385 247
Automatic Load Sensing Power Switch 143,752 16 *
Car Battery Charger 848,975 159 *
Dual Polarity Power Supply 351,052 84 *
Fixed Voltage Power Supply 287,663 52 *
High Current Power Supply 309,698 65 *
High Voltage High Current Power Supply 230,852 35 *
LASER Power Supply 269,846 28
Portable CD Player Adapter For Car 189,225 12 *
Power Supply 707,466 259 *
Solid State Tesla Coil NEW! 127,199 4
Solid State Tesla Coil/High Voltage Generator 408,622 50
Transformerless Power Supply 436,974 117 *
Voltage Inverter 313,044 51 *
Voltage Inverter II 180,741 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 558,783 182
3 Watt FM Transmitter Rae XL Tkacik 307,480 82 *
50 Watt Amplifier 479,649 74
8 Note Tune Player 122,481 12 *
8 Watt Audio Amp 344,270 67 *
Aircraft Radio Communications Receiver 247,878 49 *
Crystal Radio 145,149 53 *
Digital Volume Control 308,761 47 *
Electronic Stethoscope 286,328 141 *
FET Audio Mixer 317,067 41
FM Transmitter 960,108 419
Guitar Fuzz Effect 220,795 52 *
Microphone Mixer Anatoly I. Shikhatov 227,571 26 *
Mono To Stereo Synthesizer oRbEq 110,519 18 *
One Tube Regenerative Radio NEW! 116,013 4 *
Op Amp Radio 357,294 80 *
Single Chip AM Radio NEW! 86,111 2 *
Single Chip FM Radio NEW! 147,617 1 *
Sound Level Meter 318,056 51 *
Stereo Tube Amplifier Weslee Kinsler 245,342 15 *
Tone Control 282,723 31
Transistor Organ 174,954 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,759 27 *
FM Telephone Bug 216,519 57
Phone Busy Indicator 195,413 24 *
Remote Telephone Ringer 99,946 3 *
Ringing Phone Light Flasher 192,082 35 *
Simple Phone Tap Derek Tombrello 344,180 98 *
Telephone Hold Button 109,694 10
Telephone Recorder 193,516 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.