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
Friday, January 18, 2019
12VDC To 120VAC Inverter18
12V To 24V DC-DC Converter14
Yesterday
Thursday, January 17, 2019
Dual Polarity Power Supply87
12VDC To 120VAC Inverter81
Of All Time 12VDC To 120VAC Inverter1,426,443
FM Transmitter943,859

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 195,035 61 *
Car Alarm Arming Horn Beep Canceller bob 106,406 6 *
Wireless Auto Tachometer 302,544 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 135,818 29 *
Parallel (Printer) Port Interface 241,398 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 398,885 63 *
3 Channel Spectrum Analyzer 190,560 20
40W Fluorescent Lamp Inverter Bart Milnes 294,903 60 *
Adjustable Strobe Light 269,645 36
Black Light 231,148 29
Colour (Sound) Organ 252,632 36
Electronic Dice NEW! 155,341 10 *
Fantastic Atom Expander 167,167 25
Flash Slave Trigger 186,369 18 *
Infa-Red Remote Control 589,138 216 *
IR Remote Extender NEW! 96,136 2 *
IR Remote Jammer Carl 230,195 110 *
IR Remote Switch NEW! 126,180 9 *
LASER Transmitter/Receiver 369,586 92
LED Chaser 412,478 83 *
LED Metronome NEW! 83,072 3 *
LED Thermometer 180,303 22 *
Light/Dark Detector 278,443 90 *
Simple Colour Organ 114,918 10 *
Strobe Light 247,534 27 *
TRIAC Light Dimmer 460,422 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 317,459 122 *
Electromagnetic Levitator NEW! 117,456 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 867,302 214 *
AC Motor Speed Controller 346,557 29 *
Air Flow Detector 224,469 54 *
Digital Keypad Combination Lock 168,265 20
Low Voltage Alarm 198,469 58 *
Pine Racecar Victory Judge 79,000 1 *
Pulse Width Modulation DC Motor Control 614,863 93
Rain Detector 278,017 112 *
Simple Lie Detector 524,565 323
Simple Polarity Tester Dudley LeRoux 132,734 13 *
Simple Servo Controller 188,935 22 *
Simple Touch Switch NEW! 143,746 5 *
Simple Two Speed Contactor DC Motor Controller 178,374 21 *
Stepper Motor Controller 697,447 120 *
Time Delay Relay 519,081 88
Time Delay Relay II jawaharlal@excite.com 210,122 39 *
Touch Switch 261,120 51 *
Video Activated Relay 98,372 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 150,768 10 *
Water Detector With Sump/Bilge Pump Controller 123,951 18 *
Wire Loop Alarm Alex Meaden 180,720 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 274,688 25 *
12VDC To 120VAC Inverter 1,426,443 688
6V to 12V Converter 457,354 121
Automatic 12V Lead Acid Battery Charger 880,881 246
Automatic Load Sensing Power Switch 137,052 16 *
Car Battery Charger 834,176 159 *
Dual Polarity Power Supply 342,218 84 *
Fixed Voltage Power Supply 281,219 52 *
High Current Power Supply 299,325 65 *
High Voltage High Current Power Supply 224,756 35 *
LASER Power Supply 257,743 28
Portable CD Player Adapter For Car 182,910 12 *
Power Supply 694,434 259 *
Solid State Tesla Coil NEW! 121,737 4
Solid State Tesla Coil/High Voltage Generator 394,725 50
Transformerless Power Supply 422,972 117 *
Voltage Inverter 307,009 51 *
Voltage Inverter II 175,598 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 550,535 182
3 Watt FM Transmitter Rae XL Tkacik 299,888 82 *
50 Watt Amplifier 468,881 74
8 Note Tune Player 117,678 12 *
8 Watt Audio Amp 333,570 67 *
Aircraft Radio Communications Receiver 237,220 49 *
Crystal Radio 138,815 53 *
Digital Volume Control 300,001 47 *
Electronic Stethoscope 277,825 141 *
FET Audio Mixer 309,315 41
FM Transmitter 943,859 419
Guitar Fuzz Effect 210,269 52 *
Microphone Mixer Anatoly I. Shikhatov 218,415 26 *
Mono To Stereo Synthesizer oRbEq 102,490 18 *
One Tube Regenerative Radio NEW! 107,756 4 *
Op Amp Radio 348,564 80 *
Single Chip AM Radio NEW! 82,182 2 *
Single Chip FM Radio NEW! 137,627 1 *
Sound Level Meter 308,189 51 *
Stereo Tube Amplifier Weslee Kinsler 235,870 15 *
Tone Control 272,425 31
Transistor Organ 166,489 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 139,598 27 *
FM Telephone Bug 206,692 57
Phone Busy Indicator 187,596 24 *
Remote Telephone Ringer 95,387 3 *
Ringing Phone Light Flasher 184,915 34 *
Simple Phone Tap Derek Tombrello 333,624 98 *
Telephone Hold Button 100,850 10
Telephone Recorder 186,013 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.