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
Saturday, July 20, 2019
6V to 12V Converter25
Car Battery Charger23
Yesterday
Friday, July 19, 2019
12VDC To 120VAC Inverter54
12VDC To 120VAC Inverter54
Of All Time 12VDC To 120VAC Inverter1,444,198
FM Transmitter954,195

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 199,805 61 *
Car Alarm Arming Horn Beep Canceller bob 110,977 6 *
Wireless Auto Tachometer 309,825 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 139,203 29 *
Parallel (Printer) Port Interface 249,644 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 406,348 63 *
3 Channel Spectrum Analyzer 194,833 20
40W Fluorescent Lamp Inverter Bart Milnes 300,112 60 *
Adjustable Strobe Light 275,516 36
Black Light 238,007 29
Colour (Sound) Organ 258,200 36
Electronic Dice NEW! 160,602 10 *
Fantastic Atom Expander 172,605 25
Flash Slave Trigger 191,428 18 *
Infa-Red Remote Control 596,896 216 *
IR Remote Extender NEW! 101,487 2 *
IR Remote Jammer Carl 234,338 110 *
IR Remote Switch NEW! 131,092 9 *
LASER Transmitter/Receiver 375,851 92
LED Chaser 416,888 83 *
LED Metronome NEW! 85,222 3 *
LED Thermometer 184,056 22 *
Light/Dark Detector 282,125 90 *
Simple Colour Organ 117,954 10 *
Strobe Light 250,968 27 *
TRIAC Light Dimmer 466,627 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 323,679 122 *
Electromagnetic Levitator NEW! 121,521 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 877,851 214 *
AC Motor Speed Controller 353,836 29 *
Air Flow Detector 228,434 54 *
Digital Keypad Combination Lock 173,003 20
Low Voltage Alarm 202,419 58 *
Pine Racecar Victory Judge 83,065 1 *
Pulse Width Modulation DC Motor Control 619,869 93
Rain Detector 281,883 112 *
Simple Lie Detector 531,177 323
Simple Polarity Tester Dudley LeRoux 137,757 13 *
Simple Servo Controller 195,977 22 *
Simple Touch Switch NEW! 147,363 5 *
Simple Two Speed Contactor DC Motor Controller 181,980 21 *
Stepper Motor Controller 705,896 120 *
Time Delay Relay 524,920 88
Time Delay Relay II jawaharlal@excite.com 215,873 39 *
Touch Switch 264,884 51 *
Video Activated Relay 101,543 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 155,406 10 *
Water Detector With Sump/Bilge Pump Controller 127,133 18 *
Wire Loop Alarm Alex Meaden 184,158 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 282,537 25 *
12VDC To 120VAC Inverter 1,444,198 688
6V to 12V Converter 467,991 121
Automatic 12V Lead Acid Battery Charger 890,727 246
Automatic Load Sensing Power Switch 141,094 16 *
Car Battery Charger 843,191 159 *
Dual Polarity Power Supply 347,819 84 *
Fixed Voltage Power Supply 285,220 52 *
High Current Power Supply 305,671 65 *
High Voltage High Current Power Supply 228,574 35 *
LASER Power Supply 265,939 28
Portable CD Player Adapter For Car 186,907 12 *
Power Supply 702,205 259 *
Solid State Tesla Coil NEW! 124,694 4
Solid State Tesla Coil/High Voltage Generator 403,740 50
Transformerless Power Supply 433,121 117 *
Voltage Inverter 310,594 51 *
Voltage Inverter II 178,764 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 555,661 182
3 Watt FM Transmitter Rae XL Tkacik 304,473 82 *
50 Watt Amplifier 476,114 74
8 Note Tune Player 120,698 12 *
8 Watt Audio Amp 340,340 67 *
Aircraft Radio Communications Receiver 244,010 49 *
Crystal Radio 142,570 53 *
Digital Volume Control 305,322 47 *
Electronic Stethoscope 282,932 141 *
FET Audio Mixer 314,283 41
FM Transmitter 954,195 419
Guitar Fuzz Effect 217,201 52 *
Microphone Mixer Anatoly I. Shikhatov 223,794 26 *
Mono To Stereo Synthesizer oRbEq 107,375 18 *
One Tube Regenerative Radio NEW! 112,506 4 *
Op Amp Radio 354,051 80 *
Single Chip AM Radio NEW! 84,346 2 *
Single Chip FM Radio NEW! 143,829 1 *
Sound Level Meter 314,699 51 *
Stereo Tube Amplifier Weslee Kinsler 241,873 15 *
Tone Control 278,807 31
Transistor Organ 171,582 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 142,823 27 *
FM Telephone Bug 213,577 57
Phone Busy Indicator 192,350 24 *
Remote Telephone Ringer 98,388 3 *
Ringing Phone Light Flasher 189,209 34 *
Simple Phone Tap Derek Tombrello 338,853 98 *
Telephone Hold Button 106,724 10
Telephone Recorder 190,347 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.