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, July 07, 2022
6V to 12V Converter17
12VDC To 120VAC Inverter17
Yesterday
Wednesday, July 06, 2022
12VDC To 120VAC Inverter44
AC Motor Speed Controller32
Of All Time 12VDC To 120VAC Inverter1,502,857
FM Transmitter992,780

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 221,744 61 *
Car Alarm Arming Horn Beep Canceller bob 131,870 6 *
Wireless Auto Tachometer 336,808 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 155,393 29 *
Parallel (Printer) Port Interface 278,378 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 440,314 63 *
3 Channel Spectrum Analyzer 215,162 20
40W Fluorescent Lamp Inverter Bart Milnes 324,393 60 *
Adjustable Strobe Light 302,066 36
Black Light 270,386 29
Colour (Sound) Organ 283,692 36
Electronic Dice NEW! 183,373 10 *
Fantastic Atom Expander 198,066 25
Flash Slave Trigger 214,867 18 *
Infa-Red Remote Control 627,011 216 *
IR Remote Extender NEW! 126,552 2 *
IR Remote Jammer Carl 258,843 110 *
IR Remote Switch NEW! 152,825 9 *
LASER Transmitter/Receiver 406,217 92
LED Chaser 438,299 83 *
LED Metronome NEW! 95,106 3 *
LED Thermometer 201,860 22 *
Light/Dark Detector 301,223 90 *
Simple Colour Organ 133,175 10 *
Strobe Light 269,647 27 *
TRIAC Light Dimmer 543,749 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 353,248 122 *
Electromagnetic Levitator NEW! 139,166 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 913,881 214 *
AC Motor Speed Controller 380,903 29 *
Air Flow Detector 246,519 54 *
Digital Keypad Combination Lock 191,841 20
Low Voltage Alarm 223,998 58 *
Pine Racecar Victory Judge 98,772 1 *
Pulse Width Modulation DC Motor Control 641,742 94
Rain Detector 299,417 112 *
Simple Lie Detector 554,139 323
Simple Polarity Tester Dudley LeRoux 160,180 13 *
Simple Servo Controller 215,875 22 *
Simple Touch Switch NEW! 164,460 5 *
Simple Two Speed Contactor DC Motor Controller 199,729 21 *
Stepper Motor Controller 736,004 120 *
Time Delay Relay 549,249 88
Time Delay Relay II jawaharlal@excite.com 239,924 39 *
Touch Switch 284,209 51 *
Video Activated Relay 117,120 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 174,641 10 *
Water Detector With Sump/Bilge Pump Controller 147,864 18 *
Wire Loop Alarm Alex Meaden 200,934 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 306,635 25 *
12VDC To 120VAC Inverter 1,502,857 690
6V to 12V Converter 518,453 121
Automatic 12V Lead Acid Battery Charger 927,105 248
Automatic Load Sensing Power Switch 161,660 16 *
Car Battery Charger 873,935 159 *
Dual Polarity Power Supply 364,519 84 *
Fixed Voltage Power Supply 304,734 52 *
High Current Power Supply 330,221 66 *
High Voltage High Current Power Supply 247,067 35 *
LASER Power Supply 288,964 28
Portable CD Player Adapter For Car 206,538 12 *
Power Supply 729,807 259 *
Solid State Tesla Coil NEW! 139,673 4
Solid State Tesla Coil/High Voltage Generator 434,871 51
Transformerless Power Supply 456,463 117 *
Voltage Inverter 330,805 51 *
Voltage Inverter II 196,112 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 578,572 182
3 Watt FM Transmitter Rae XL Tkacik 327,083 83 *
50 Watt Amplifier 500,032 74
8 Note Tune Player 136,245 12 *
8 Watt Audio Amp 365,018 67 *
Aircraft Radio Communications Receiver 270,022 49 *
Crystal Radio 154,102 53 *
Digital Volume Control 326,617 47 *
Electronic Stethoscope 307,619 142 *
FET Audio Mixer 336,700 41
FM Transmitter 992,780 420
Guitar Fuzz Effect 239,897 54 *
Microphone Mixer Anatoly I. Shikhatov 244,577 26 *
Mono To Stereo Synthesizer oRbEq 127,749 18 *
One Tube Regenerative Radio NEW! 130,784 4 *
Op Amp Radio 379,239 80 *
Single Chip AM Radio NEW! 95,028 2 *
Single Chip FM Radio NEW! 165,315 1 *
Sound Level Meter 335,201 51 *
Stereo Tube Amplifier Weslee Kinsler 261,982 15 *
Tone Control 303,246 31
Transistor Organ 193,028 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 159,194 27 *
FM Telephone Bug 231,357 57
Phone Busy Indicator 209,464 24 *
Remote Telephone Ringer 114,230 3 *
Ringing Phone Light Flasher 210,577 35 *
Simple Phone Tap Derek Tombrello 378,804 98 *
Telephone Hold Button 124,383 10
Telephone Recorder 211,752 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.