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 Trigger49
Solid State Tesla Coil/High Voltage Generator45
Yesterday
Sunday, April 05, 2020
6V to 12V Converter81
12VDC Fluorescent Lamp Driver74
Of All Time 12VDC To 120VAC Inverter1,461,273
FM Transmitter965,264

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 206,572 61 *
Car Alarm Arming Horn Beep Canceller bob 117,652 6 *
Wireless Auto Tachometer 319,253 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 144,219 29 *
Parallel (Printer) Port Interface 259,285 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 417,500 63 *
3 Channel Spectrum Analyzer 200,820 20
40W Fluorescent Lamp Inverter Bart Milnes 308,481 60 *
Adjustable Strobe Light 283,589 36
Black Light 247,802 29
Colour (Sound) Organ 266,061 36
Electronic Dice NEW! 168,051 10 *
Fantastic Atom Expander 180,482 25
Flash Slave Trigger 198,347 18 *
Infa-Red Remote Control 606,344 216 *
IR Remote Extender NEW! 109,768 2 *
IR Remote Jammer Carl 241,811 110 *
IR Remote Switch NEW! 138,547 9 *
LASER Transmitter/Receiver 384,866 92
LED Chaser 423,589 83 *
LED Metronome NEW! 88,020 3 *
LED Thermometer 189,890 22 *
Light/Dark Detector 287,939 90 *
Simple Colour Organ 122,372 10 *
Strobe Light 256,326 27 *
TRIAC Light Dimmer 478,180 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 332,584 122 *
Electromagnetic Levitator NEW! 126,806 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 890,153 214 *
AC Motor Speed Controller 362,516 29 *
Air Flow Detector 233,807 54 *
Digital Keypad Combination Lock 179,406 20
Low Voltage Alarm 208,658 58 *
Pine Racecar Victory Judge 88,265 1 *
Pulse Width Modulation DC Motor Control 626,623 94
Rain Detector 287,018 112 *
Simple Lie Detector 539,061 323
Simple Polarity Tester Dudley LeRoux 144,971 13 *
Simple Servo Controller 202,264 22 *
Simple Touch Switch NEW! 152,279 5 *
Simple Two Speed Contactor DC Motor Controller 187,463 21 *
Stepper Motor Controller 714,631 120 *
Time Delay Relay 534,441 88
Time Delay Relay II jawaharlal@excite.com 223,166 39 *
Touch Switch 270,706 51 *
Video Activated Relay 106,106 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 161,437 10 *
Water Detector With Sump/Bilge Pump Controller 132,267 18 *
Wire Loop Alarm Alex Meaden 189,057 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 290,866 25 *
12VDC To 120VAC Inverter 1,461,273 689
6V to 12V Converter 491,763 121
Automatic 12V Lead Acid Battery Charger 903,182 247
Automatic Load Sensing Power Switch 147,231 16 *
Car Battery Charger 854,232 159 *
Dual Polarity Power Supply 352,931 84 *
Fixed Voltage Power Supply 290,841 52 *
High Current Power Supply 314,228 65 *
High Voltage High Current Power Supply 234,081 35 *
LASER Power Supply 273,758 28
Portable CD Player Adapter For Car 192,481 12 *
Power Supply 712,071 259 *
Solid State Tesla Coil NEW! 129,113 4
Solid State Tesla Coil/High Voltage Generator 413,436 50
Transformerless Power Supply 440,568 117 *
Voltage Inverter 315,260 51 *
Voltage Inverter II 183,633 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 562,429 182
3 Watt FM Transmitter Rae XL Tkacik 311,636 82 *
50 Watt Amplifier 483,950 74
8 Note Tune Player 125,232 12 *
8 Watt Audio Amp 348,002 67 *
Aircraft Radio Communications Receiver 254,845 49 *
Crystal Radio 146,446 53 *
Digital Volume Control 311,984 47 *
Electronic Stethoscope 290,208 141 *
FET Audio Mixer 320,658 41
FM Transmitter 965,264 419
Guitar Fuzz Effect 224,261 52 *
Microphone Mixer Anatoly I. Shikhatov 230,937 26 *
Mono To Stereo Synthesizer oRbEq 113,836 18 *
One Tube Regenerative Radio NEW! 118,011 4 *
Op Amp Radio 361,412 80 *
Single Chip AM Radio NEW! 87,478 2 *
Single Chip FM Radio NEW! 151,354 1 *
Sound Level Meter 321,416 51 *
Stereo Tube Amplifier Weslee Kinsler 248,623 15 *
Tone Control 286,256 31
Transistor Organ 178,158 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 147,556 27 *
FM Telephone Bug 219,287 57
Phone Busy Indicator 198,092 24 *
Remote Telephone Ringer 102,712 3 *
Ringing Phone Light Flasher 195,452 35 *
Simple Phone Tap Derek Tombrello 349,303 98 *
Telephone Hold Button 112,653 10
Telephone Recorder 198,191 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.