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
Thursday, May 28, 2020
Phone Busy Indicator19
Simple Polarity Tester17
Yesterday
Wednesday, May 27, 2020
12VDC To 120VAC Inverter89
Infa-Red Remote Control72
Of All Time 12VDC To 120VAC Inverter1,465,135
FM Transmitter968,236

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 208,872 61 *
Car Alarm Arming Horn Beep Canceller bob 120,084 6 *
Wireless Auto Tachometer 321,894 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 145,795 29 *
Parallel (Printer) Port Interface 262,040 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 421,232 63 *
3 Channel Spectrum Analyzer 202,562 20
40W Fluorescent Lamp Inverter Bart Milnes 310,915 60 *
Adjustable Strobe Light 286,326 36
Black Light 250,855 29
Colour (Sound) Organ 268,596 36
Electronic Dice NEW! 170,349 10 *
Fantastic Atom Expander 183,262 25
Flash Slave Trigger 200,895 18 *
Infa-Red Remote Control 610,388 216 *
IR Remote Extender NEW! 112,285 2 *
IR Remote Jammer Carl 243,615 110 *
IR Remote Switch NEW! 140,756 9 *
LASER Transmitter/Receiver 387,576 92
LED Chaser 425,406 83 *
LED Metronome NEW! 88,545 3 *
LED Thermometer 191,652 22 *
Light/Dark Detector 289,722 90 *
Simple Colour Organ 123,969 10 *
Strobe Light 258,121 27 *
TRIAC Light Dimmer 480,121 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 335,715 122 *
Electromagnetic Levitator NEW! 128,404 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 893,392 214 *
AC Motor Speed Controller 364,664 29 *
Air Flow Detector 235,569 54 *
Digital Keypad Combination Lock 181,141 20
Low Voltage Alarm 210,502 58 *
Pine Racecar Victory Judge 89,722 1 *
Pulse Width Modulation DC Motor Control 628,528 94
Rain Detector 288,685 112 *
Simple Lie Detector 541,117 323
Simple Polarity Tester Dudley LeRoux 147,546 13 *
Simple Servo Controller 204,042 22 *
Simple Touch Switch NEW! 153,743 5 *
Simple Two Speed Contactor DC Motor Controller 189,051 21 *
Stepper Motor Controller 716,985 120 *
Time Delay Relay 536,379 88
Time Delay Relay II jawaharlal@excite.com 225,779 39 *
Touch Switch 272,580 51 *
Video Activated Relay 107,690 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 163,206 10 *
Water Detector With Sump/Bilge Pump Controller 134,099 18 *
Wire Loop Alarm Alex Meaden 190,618 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 292,850 25 *
12VDC To 120VAC Inverter 1,465,135 689
6V to 12V Converter 497,549 121
Automatic 12V Lead Acid Battery Charger 906,295 247
Automatic Load Sensing Power Switch 148,862 16 *
Car Battery Charger 857,070 159 *
Dual Polarity Power Supply 354,024 84 *
Fixed Voltage Power Supply 292,562 52 *
High Current Power Supply 316,107 65 *
High Voltage High Current Power Supply 235,916 35 *
LASER Power Supply 275,636 28
Portable CD Player Adapter For Car 194,324 12 *
Power Supply 714,332 259 *
Solid State Tesla Coil NEW! 130,014 4
Solid State Tesla Coil/High Voltage Generator 415,837 50
Transformerless Power Supply 442,435 117 *
Voltage Inverter 316,463 51 *
Voltage Inverter II 185,274 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 564,711 182
3 Watt FM Transmitter Rae XL Tkacik 313,428 82 *
50 Watt Amplifier 486,059 74
8 Note Tune Player 126,826 12 *
8 Watt Audio Amp 350,034 67 *
Aircraft Radio Communications Receiver 256,816 49 *
Crystal Radio 147,384 53 *
Digital Volume Control 313,741 47 *
Electronic Stethoscope 292,321 141 *
FET Audio Mixer 322,757 41
FM Transmitter 968,236 419
Guitar Fuzz Effect 226,159 52 *
Microphone Mixer Anatoly I. Shikhatov 232,681 26 *
Mono To Stereo Synthesizer oRbEq 115,614 18 *
One Tube Regenerative Radio NEW! 118,844 4 *
Op Amp Radio 364,042 80 *
Single Chip AM Radio NEW! 88,111 2 *
Single Chip FM Radio NEW! 152,944 1 *
Sound Level Meter 323,161 51 *
Stereo Tube Amplifier Weslee Kinsler 250,184 15 *
Tone Control 288,210 31
Transistor Organ 180,105 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 149,261 27 *
FM Telephone Bug 220,978 57
Phone Busy Indicator 199,674 24 *
Remote Telephone Ringer 104,366 3 *
Ringing Phone Light Flasher 197,144 35 *
Simple Phone Tap Derek Tombrello 351,432 98 *
Telephone Hold Button 114,295 10
Telephone Recorder 200,174 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.