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, August 22, 2019
Parallel (Printer) Port Interface243
12VDC To 120VAC Inverter24
Yesterday
Wednesday, August 21, 2019
6V to 12V Converter92
12VDC To 120VAC Inverter58
Of All Time 12VDC To 120VAC Inverter1,446,135
FM Transmitter955,521

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 200,280 61 *
Car Alarm Arming Horn Beep Canceller bob 111,454 6 *
Wireless Auto Tachometer 310,737 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 139,648 29 *
Parallel (Printer) Port Interface 250,857 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 407,178 63 *
3 Channel Spectrum Analyzer 195,393 20
40W Fluorescent Lamp Inverter Bart Milnes 300,756 60 *
Adjustable Strobe Light 276,200 36
Black Light 238,891 29
Colour (Sound) Organ 258,821 36
Electronic Dice NEW! 161,216 10 *
Fantastic Atom Expander 173,235 25
Flash Slave Trigger 191,988 18 *
Infa-Red Remote Control 597,717 216 *
IR Remote Extender NEW! 102,081 2 *
IR Remote Jammer Carl 234,995 110 *
IR Remote Switch NEW! 131,689 9 *
LASER Transmitter/Receiver 376,621 92
LED Chaser 417,535 83 *
LED Metronome NEW! 85,593 3 *
LED Thermometer 184,630 22 *
Light/Dark Detector 282,639 90 *
Simple Colour Organ 118,345 10 *
Strobe Light 251,482 27 *
TRIAC Light Dimmer 467,848 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 324,959 122 *
Electromagnetic Levitator NEW! 122,011 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 879,086 214 *
AC Motor Speed Controller 354,809 29 *
Air Flow Detector 228,960 54 *
Digital Keypad Combination Lock 173,752 20
Low Voltage Alarm 203,032 58 *
Pine Racecar Victory Judge 83,682 1 *
Pulse Width Modulation DC Motor Control 620,554 93
Rain Detector 282,352 112 *
Simple Lie Detector 532,076 323
Simple Polarity Tester Dudley LeRoux 138,313 13 *
Simple Servo Controller 196,732 22 *
Simple Touch Switch NEW! 147,842 5 *
Simple Two Speed Contactor DC Motor Controller 182,449 21 *
Stepper Motor Controller 706,746 120 *
Time Delay Relay 525,814 88
Time Delay Relay II jawaharlal@excite.com 216,458 39 *
Touch Switch 265,393 51 *
Video Activated Relay 101,969 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 156,007 10 *
Water Detector With Sump/Bilge Pump Controller 127,579 18 *
Wire Loop Alarm Alex Meaden 184,615 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 283,485 25 *
12VDC To 120VAC Inverter 1,446,135 688
6V to 12V Converter 469,407 121
Automatic 12V Lead Acid Battery Charger 892,152 246
Automatic Load Sensing Power Switch 141,684 16 *
Car Battery Charger 844,357 159 *
Dual Polarity Power Supply 348,364 84 *
Fixed Voltage Power Supply 285,740 52 *
High Current Power Supply 306,502 65 *
High Voltage High Current Power Supply 229,071 35 *
LASER Power Supply 266,830 28
Portable CD Player Adapter For Car 187,399 12 *
Power Supply 703,340 259 *
Solid State Tesla Coil NEW! 125,285 4
Solid State Tesla Coil/High Voltage Generator 404,818 50
Transformerless Power Supply 433,978 117 *
Voltage Inverter 311,157 51 *
Voltage Inverter II 179,182 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 556,379 182
3 Watt FM Transmitter Rae XL Tkacik 305,222 82 *
50 Watt Amplifier 476,929 74
8 Note Tune Player 121,052 12 *
8 Watt Audio Amp 341,251 67 *
Aircraft Radio Communications Receiver 244,878 49 *
Crystal Radio 143,124 53 *
Digital Volume Control 306,089 47 *
Electronic Stethoscope 283,648 141 *
FET Audio Mixer 314,887 41
FM Transmitter 955,521 419
Guitar Fuzz Effect 217,991 52 *
Microphone Mixer Anatoly I. Shikhatov 224,628 26 *
Mono To Stereo Synthesizer oRbEq 108,066 18 *
One Tube Regenerative Radio NEW! 113,366 4 *
Op Amp Radio 354,724 80 *
Single Chip AM Radio NEW! 84,766 2 *
Single Chip FM Radio NEW! 144,698 1 *
Sound Level Meter 315,502 51 *
Stereo Tube Amplifier Weslee Kinsler 242,688 15 *
Tone Control 279,706 31
Transistor Organ 172,367 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 143,226 27 *
FM Telephone Bug 214,251 57
Phone Busy Indicator 193,063 24 *
Remote Telephone Ringer 98,741 3 *
Ringing Phone Light Flasher 189,809 34 *
Simple Phone Tap Derek Tombrello 341,581 98 *
Telephone Hold Button 107,389 10
Telephone Recorder 190,934 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.