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
Tuesday, July 07, 2020
Simple Phone Tap5,137
12VDC To 120VAC Inverter22
Yesterday
Monday, July 06, 2020
Simple Phone Tap11,278
12VDC To 120VAC Inverter41
Of All Time 12VDC To 120VAC Inverter1,467,434
FM Transmitter969,795

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 210,114 61 *
Car Alarm Arming Horn Beep Canceller bob 121,243 6 *
Wireless Auto Tachometer 323,258 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 146,602 29 *
Parallel (Printer) Port Interface 263,501 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 423,096 63 *
3 Channel Spectrum Analyzer 203,540 20
40W Fluorescent Lamp Inverter Bart Milnes 312,194 60 *
Adjustable Strobe Light 287,730 36
Black Light 252,452 29
Colour (Sound) Organ 269,908 36
Electronic Dice NEW! 171,629 10 *
Fantastic Atom Expander 184,610 25
Flash Slave Trigger 202,152 18 *
Infa-Red Remote Control 611,848 216 *
IR Remote Extender NEW! 113,655 2 *
IR Remote Jammer Carl 244,561 110 *
IR Remote Switch NEW! 141,995 9 *
LASER Transmitter/Receiver 389,032 92
LED Chaser 426,404 83 *
LED Metronome NEW! 88,978 3 *
LED Thermometer 192,557 22 *
Light/Dark Detector 290,700 90 *
Simple Colour Organ 124,730 10 *
Strobe Light 259,031 27 *
TRIAC Light Dimmer 481,309 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 339,150 122 *
Electromagnetic Levitator NEW! 129,311 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 895,082 214 *
AC Motor Speed Controller 365,831 29 *
Air Flow Detector 236,457 54 *
Digital Keypad Combination Lock 181,994 20
Low Voltage Alarm 211,472 58 *
Pine Racecar Victory Judge 90,516 1 *
Pulse Width Modulation DC Motor Control 629,606 94
Rain Detector 289,613 112 *
Simple Lie Detector 542,160 323
Simple Polarity Tester Dudley LeRoux 148,821 13 *
Simple Servo Controller 204,957 22 *
Simple Touch Switch NEW! 154,649 5 *
Simple Two Speed Contactor DC Motor Controller 189,955 21 *
Stepper Motor Controller 718,554 120 *
Time Delay Relay 537,940 88
Time Delay Relay II jawaharlal@excite.com 227,102 39 *
Touch Switch 273,532 51 *
Video Activated Relay 108,473 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 164,200 10 *
Water Detector With Sump/Bilge Pump Controller 135,344 18 *
Wire Loop Alarm Alex Meaden 191,486 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 293,982 25 *
12VDC To 120VAC Inverter 1,467,434 689
6V to 12V Converter 499,142 121
Automatic 12V Lead Acid Battery Charger 907,791 247
Automatic Load Sensing Power Switch 149,905 16 *
Car Battery Charger 858,513 159 *
Dual Polarity Power Supply 354,656 84 *
Fixed Voltage Power Supply 293,461 52 *
High Current Power Supply 317,568 65 *
High Voltage High Current Power Supply 236,855 35 *
LASER Power Supply 276,681 28
Portable CD Player Adapter For Car 195,325 12 *
Power Supply 715,713 259 *
Solid State Tesla Coil NEW! 130,695 4
Solid State Tesla Coil/High Voltage Generator 417,243 50
Transformerless Power Supply 443,717 117 *
Voltage Inverter 317,218 51 *
Voltage Inverter II 186,138 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 565,864 182
3 Watt FM Transmitter Rae XL Tkacik 314,420 82 *
50 Watt Amplifier 487,242 74
8 Note Tune Player 127,666 12 *
8 Watt Audio Amp 351,207 67 *
Aircraft Radio Communications Receiver 257,810 49 *
Crystal Radio 147,823 53 *
Digital Volume Control 314,729 47 *
Electronic Stethoscope 293,431 141 *
FET Audio Mixer 323,818 41
FM Transmitter 969,795 419
Guitar Fuzz Effect 227,213 52 *
Microphone Mixer Anatoly I. Shikhatov 233,665 26 *
Mono To Stereo Synthesizer oRbEq 116,575 18 *
One Tube Regenerative Radio NEW! 119,480 4 *
Op Amp Radio 365,181 80 *
Single Chip AM Radio NEW! 88,563 2 *
Single Chip FM Radio NEW! 153,935 1 *
Sound Level Meter 324,138 51 *
Stereo Tube Amplifier Weslee Kinsler 251,131 15 *
Tone Control 289,296 31
Transistor Organ 181,117 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 150,106 27 *
FM Telephone Bug 221,857 57
Phone Busy Indicator 200,422 24 *
Remote Telephone Ringer 105,154 3 *
Ringing Phone Light Flasher 198,435 35 *
Simple Phone Tap Derek Tombrello 368,855 98 *
Telephone Hold Button 115,144 10
Telephone Recorder 201,340 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.