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 05, 2020
Aircraft Radio Communications Receiver45
12VDC Fluorescent Lamp Driver45
Yesterday
Saturday, April 04, 2020
FM Transmitter66
12VDC To 120VAC Inverter65
Of All Time 12VDC To 120VAC Inverter1,461,193
FM Transmitter965,217

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 206,531 61 *
Car Alarm Arming Horn Beep Canceller bob 117,606 6 *
Wireless Auto Tachometer 319,201 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 144,196 29 *
Parallel (Printer) Port Interface 259,240 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 417,432 63 *
3 Channel Spectrum Analyzer 200,786 20
40W Fluorescent Lamp Inverter Bart Milnes 308,429 60 *
Adjustable Strobe Light 283,530 36
Black Light 247,748 29
Colour (Sound) Organ 266,018 36
Electronic Dice NEW! 168,004 10 *
Fantastic Atom Expander 180,433 25
Flash Slave Trigger 198,281 18 *
Infa-Red Remote Control 606,293 216 *
IR Remote Extender NEW! 109,725 2 *
IR Remote Jammer Carl 241,759 110 *
IR Remote Switch NEW! 138,508 9 *
LASER Transmitter/Receiver 384,817 92
LED Chaser 423,569 83 *
LED Metronome NEW! 88,012 3 *
LED Thermometer 189,873 22 *
Light/Dark Detector 287,911 90 *
Simple Colour Organ 122,344 10 *
Strobe Light 256,293 27 *
TRIAC Light Dimmer 478,148 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 332,539 122 *
Electromagnetic Levitator NEW! 126,775 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 890,102 214 *
AC Motor Speed Controller 362,486 29 *
Air Flow Detector 233,778 54 *
Digital Keypad Combination Lock 179,377 20
Low Voltage Alarm 208,624 58 *
Pine Racecar Victory Judge 88,238 1 *
Pulse Width Modulation DC Motor Control 626,584 94
Rain Detector 286,991 112 *
Simple Lie Detector 539,031 323
Simple Polarity Tester Dudley LeRoux 144,915 13 *
Simple Servo Controller 202,242 22 *
Simple Touch Switch NEW! 152,253 5 *
Simple Two Speed Contactor DC Motor Controller 187,421 21 *
Stepper Motor Controller 714,593 120 *
Time Delay Relay 534,404 88
Time Delay Relay II jawaharlal@excite.com 223,112 39 *
Touch Switch 270,670 51 *
Video Activated Relay 106,081 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 161,409 10 *
Water Detector With Sump/Bilge Pump Controller 132,242 18 *
Wire Loop Alarm Alex Meaden 189,028 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 290,840 25 *
12VDC To 120VAC Inverter 1,461,193 689
6V to 12V Converter 491,655 121
Automatic 12V Lead Acid Battery Charger 903,125 247
Automatic Load Sensing Power Switch 147,205 16 *
Car Battery Charger 854,177 159 *
Dual Polarity Power Supply 352,911 84 *
Fixed Voltage Power Supply 290,809 52 *
High Current Power Supply 314,196 65 *
High Voltage High Current Power Supply 234,046 35 *
LASER Power Supply 273,726 28
Portable CD Player Adapter For Car 192,443 12 *
Power Supply 712,023 259 *
Solid State Tesla Coil NEW! 129,102 4
Solid State Tesla Coil/High Voltage Generator 413,376 50
Transformerless Power Supply 440,541 117 *
Voltage Inverter 315,242 51 *
Voltage Inverter II 183,608 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 562,386 182
3 Watt FM Transmitter Rae XL Tkacik 311,596 82 *
50 Watt Amplifier 483,922 74
8 Note Tune Player 125,203 12 *
8 Watt Audio Amp 347,968 67 *
Aircraft Radio Communications Receiver 254,819 49 *
Crystal Radio 146,427 53 *
Digital Volume Control 311,955 47 *
Electronic Stethoscope 290,180 141 *
FET Audio Mixer 320,601 41
FM Transmitter 965,217 419
Guitar Fuzz Effect 224,226 52 *
Microphone Mixer Anatoly I. Shikhatov 230,900 26 *
Mono To Stereo Synthesizer oRbEq 113,813 18 *
One Tube Regenerative Radio NEW! 117,997 4 *
Op Amp Radio 361,381 80 *
Single Chip AM Radio NEW! 87,469 2 *
Single Chip FM Radio NEW! 151,334 1 *
Sound Level Meter 321,387 51 *
Stereo Tube Amplifier Weslee Kinsler 248,592 15 *
Tone Control 286,220 31
Transistor Organ 178,134 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 147,530 27 *
FM Telephone Bug 219,257 57
Phone Busy Indicator 198,056 24 *
Remote Telephone Ringer 102,677 3 *
Ringing Phone Light Flasher 195,429 35 *
Simple Phone Tap Derek Tombrello 349,271 98 *
Telephone Hold Button 112,631 10
Telephone Recorder 198,163 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.