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, April 06, 2020
Flash Slave Trigger38
Solid State Tesla Coil/High Voltage Generator35
Yesterday
Sunday, April 05, 2020
6V to 12V Converter81
12VDC Fluorescent Lamp Driver74
Of All Time 12VDC To 120VAC Inverter1,461,265
FM Transmitter965,254

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 206,560 61 *
Car Alarm Arming Horn Beep Canceller bob 117,644 6 *
Wireless Auto Tachometer 319,235 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 144,216 29 *
Parallel (Printer) Port Interface 259,277 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 417,489 63 *
3 Channel Spectrum Analyzer 200,816 20
40W Fluorescent Lamp Inverter Bart Milnes 308,472 60 *
Adjustable Strobe Light 283,579 36
Black Light 247,791 29
Colour (Sound) Organ 266,058 36
Electronic Dice NEW! 168,042 10 *
Fantastic Atom Expander 180,476 25
Flash Slave Trigger 198,336 18 *
Infa-Red Remote Control 606,331 216 *
IR Remote Extender NEW! 109,765 2 *
IR Remote Jammer Carl 241,800 110 *
IR Remote Switch NEW! 138,541 9 *
LASER Transmitter/Receiver 384,860 92
LED Chaser 423,588 83 *
LED Metronome NEW! 88,020 3 *
LED Thermometer 189,888 22 *
Light/Dark Detector 287,933 90 *
Simple Colour Organ 122,366 10 *
Strobe Light 256,318 27 *
TRIAC Light Dimmer 478,179 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 332,580 122 *
Electromagnetic Levitator NEW! 126,801 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 890,151 214 *
AC Motor Speed Controller 362,516 29 *
Air Flow Detector 233,802 54 *
Digital Keypad Combination Lock 179,400 20
Low Voltage Alarm 208,654 58 *
Pine Racecar Victory Judge 88,260 1 *
Pulse Width Modulation DC Motor Control 626,608 94
Rain Detector 287,016 112 *
Simple Lie Detector 539,057 323
Simple Polarity Tester Dudley LeRoux 144,962 13 *
Simple Servo Controller 202,261 22 *
Simple Touch Switch NEW! 152,276 5 *
Simple Two Speed Contactor DC Motor Controller 187,455 21 *
Stepper Motor Controller 714,625 120 *
Time Delay Relay 534,436 88
Time Delay Relay II jawaharlal@excite.com 223,159 39 *
Touch Switch 270,705 51 *
Video Activated Relay 106,104 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 161,430 10 *
Water Detector With Sump/Bilge Pump Controller 132,266 18 *
Wire Loop Alarm Alex Meaden 189,051 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 290,864 25 *
12VDC To 120VAC Inverter 1,461,265 689
6V to 12V Converter 491,755 121
Automatic 12V Lead Acid Battery Charger 903,173 247
Automatic Load Sensing Power Switch 147,229 16 *
Car Battery Charger 854,226 159 *
Dual Polarity Power Supply 352,930 84 *
Fixed Voltage Power Supply 290,840 52 *
High Current Power Supply 314,221 65 *
High Voltage High Current Power Supply 234,078 35 *
LASER Power Supply 273,752 28
Portable CD Player Adapter For Car 192,477 12 *
Power Supply 712,063 259 *
Solid State Tesla Coil NEW! 129,111 4
Solid State Tesla Coil/High Voltage Generator 413,426 50
Transformerless Power Supply 440,562 117 *
Voltage Inverter 315,255 51 *
Voltage Inverter II 183,625 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 562,423 182
3 Watt FM Transmitter Rae XL Tkacik 311,628 82 *
50 Watt Amplifier 483,947 74
8 Note Tune Player 125,229 12 *
8 Watt Audio Amp 347,994 67 *
Aircraft Radio Communications Receiver 254,838 49 *
Crystal Radio 146,443 53 *
Digital Volume Control 311,983 47 *
Electronic Stethoscope 290,206 141 *
FET Audio Mixer 320,649 41
FM Transmitter 965,254 419
Guitar Fuzz Effect 224,255 52 *
Microphone Mixer Anatoly I. Shikhatov 230,929 26 *
Mono To Stereo Synthesizer oRbEq 113,833 18 *
One Tube Regenerative Radio NEW! 118,006 4 *
Op Amp Radio 361,410 80 *
Single Chip AM Radio NEW! 87,476 2 *
Single Chip FM Radio NEW! 151,351 1 *
Sound Level Meter 321,414 51 *
Stereo Tube Amplifier Weslee Kinsler 248,619 15 *
Tone Control 286,249 31
Transistor Organ 178,155 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 147,549 27 *
FM Telephone Bug 219,281 57
Phone Busy Indicator 198,086 24 *
Remote Telephone Ringer 102,710 3 *
Ringing Phone Light Flasher 195,448 35 *
Simple Phone Tap Derek Tombrello 349,298 98 *
Telephone Hold Button 112,653 10
Telephone Recorder 198,187 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.