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
Monday, September 27, 2021
LASER Transmitter/Receiver10
Colour (Sound) Organ10
Yesterday
Sunday, September 26, 2021
12VDC To 120VAC Inverter27
AC Motor Speed Controller27
Of All Time 12VDC To 120VAC Inverter1,491,813
FM Transmitter982,527

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 218,379 61 *
Car Alarm Arming Horn Beep Canceller bob 129,009 6 *
Wireless Auto Tachometer 332,716 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 152,743 29 *
Parallel (Printer) Port Interface 273,900 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 435,558 63 *
3 Channel Spectrum Analyzer 211,381 20
40W Fluorescent Lamp Inverter Bart Milnes 320,836 60 *
Adjustable Strobe Light 297,688 36
Black Light 264,568 29
Colour (Sound) Organ 279,696 36
Electronic Dice NEW! 180,055 10 *
Fantastic Atom Expander 193,810 25
Flash Slave Trigger 211,062 18 *
Infa-Red Remote Control 622,495 216 *
IR Remote Extender NEW! 122,895 2 *
IR Remote Jammer Carl 253,593 110 *
IR Remote Switch NEW! 149,936 9 *
LASER Transmitter/Receiver 400,740 92
LED Chaser 434,129 83 *
LED Metronome NEW! 92,986 3 *
LED Thermometer 198,971 22 *
Light/Dark Detector 297,832 90 *
Simple Colour Organ 130,508 10 *
Strobe Light 265,930 27 *
TRIAC Light Dimmer 539,911 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 349,493 122 *
Electromagnetic Levitator NEW! 136,157 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 908,438 214 *
AC Motor Speed Controller 375,586 29 *
Air Flow Detector 243,354 54 *
Digital Keypad Combination Lock 188,643 20
Low Voltage Alarm 218,944 58 *
Pine Racecar Victory Judge 96,217 1 *
Pulse Width Modulation DC Motor Control 637,721 94
Rain Detector 296,073 112 *
Simple Lie Detector 550,345 323
Simple Polarity Tester Dudley LeRoux 156,914 13 *
Simple Servo Controller 212,104 22 *
Simple Touch Switch NEW! 161,228 5 *
Simple Two Speed Contactor DC Motor Controller 196,576 21 *
Stepper Motor Controller 729,834 120 *
Time Delay Relay 545,729 88
Time Delay Relay II jawaharlal@excite.com 235,754 39 *
Touch Switch 280,650 51 *
Video Activated Relay 114,334 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 171,276 10 *
Water Detector With Sump/Bilge Pump Controller 144,628 18 *
Wire Loop Alarm Alex Meaden 197,822 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 302,538 25 *
12VDC To 120VAC Inverter 1,491,813 689
6V to 12V Converter 512,686 121
Automatic 12V Lead Acid Battery Charger 919,818 248
Automatic Load Sensing Power Switch 157,915 16 *
Car Battery Charger 868,875 159 *
Dual Polarity Power Supply 360,706 84 *
Fixed Voltage Power Supply 300,881 52 *
High Current Power Supply 325,929 66 *
High Voltage High Current Power Supply 243,702 35 *
LASER Power Supply 284,905 28
Portable CD Player Adapter For Car 203,012 12 *
Power Supply 725,315 259 *
Solid State Tesla Coil NEW! 136,307 4
Solid State Tesla Coil/High Voltage Generator 429,450 50
Transformerless Power Supply 452,307 117 *
Voltage Inverter 325,410 51 *
Voltage Inverter II 192,586 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 574,502 182
3 Watt FM Transmitter Rae XL Tkacik 322,809 83 *
50 Watt Amplifier 495,919 74
8 Note Tune Player 133,516 12 *
8 Watt Audio Amp 360,488 67 *
Aircraft Radio Communications Receiver 265,901 49 *
Crystal Radio 151,819 53 *
Digital Volume Control 322,654 47 *
Electronic Stethoscope 303,103 142 *
FET Audio Mixer 332,554 41
FM Transmitter 982,527 420
Guitar Fuzz Effect 235,665 54 *
Microphone Mixer Anatoly I. Shikhatov 241,071 26 *
Mono To Stereo Synthesizer oRbEq 124,114 18 *
One Tube Regenerative Radio NEW! 126,058 4 *
Op Amp Radio 374,427 80 *
Single Chip AM Radio NEW! 92,572 2 *
Single Chip FM Radio NEW! 161,798 1 *
Sound Level Meter 331,401 51 *
Stereo Tube Amplifier Weslee Kinsler 258,481 15 *
Tone Control 298,311 31
Transistor Organ 189,248 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 156,219 27 *
FM Telephone Bug 228,360 57
Phone Busy Indicator 206,297 24 *
Remote Telephone Ringer 111,471 3 *
Ringing Phone Light Flasher 206,245 35 *
Simple Phone Tap Derek Tombrello 375,670 98 *
Telephone Hold Button 121,383 10
Telephone Recorder 208,619 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.