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, May 24, 2018
Aircraft Radio Communications Receiver129
Fantastic Atom Expander117
Yesterday
Wednesday, May 23, 2018
Car Battery Charger153
12VDC To 120VAC Inverter109
Of All Time 12VDC To 120VAC Inverter1,411,127
FM Transmitter934,006

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,313 61 *
Car Alarm Arming Horn Beep Canceller bob 101,207 6 *
Wireless Auto Tachometer 296,976 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,582 29 *
Parallel (Printer) Port Interface 235,747 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 392,442 63 *
3 Channel Spectrum Analyzer 185,005 20
40W Fluorescent Lamp Inverter Bart Milnes 289,744 60 *
Adjustable Strobe Light 262,758 36
Black Light 224,524 29
Colour (Sound) Organ 246,877 36
Electronic Dice NEW! 150,486 10 *
Fantastic Atom Expander 161,044 25
Flash Slave Trigger 181,371 18 *
Infa-Red Remote Control 580,518 216 *
IR Remote Extender NEW! 91,173 2 *
IR Remote Jammer Carl 224,483 110 *
IR Remote Switch NEW! 121,565 9 *
LASER Transmitter/Receiver 362,610 92
LED Chaser 405,942 83 *
LED Metronome NEW! 80,450 3 *
LED Thermometer 175,635 22 *
Light/Dark Detector 274,860 90 *
Simple Colour Organ 110,589 10 *
Strobe Light 242,427 27 *
TRIAC Light Dimmer 455,152 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,531 122 *
Electromagnetic Levitator NEW! 112,009 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 857,063 214 *
AC Motor Speed Controller 337,936 29 *
Air Flow Detector 219,125 54 *
Digital Keypad Combination Lock 162,719 20
Low Voltage Alarm 192,403 58 *
Pine Racecar Victory Judge 75,065 1 *
Pulse Width Modulation DC Motor Control 609,376 93
Rain Detector 271,352 112 *
Simple Lie Detector 516,518 323
Simple Polarity Tester Dudley LeRoux 127,680 13 *
Simple Servo Controller 184,149 22 *
Simple Touch Switch NEW! 138,295 5 *
Simple Two Speed Contactor DC Motor Controller 175,160 21 *
Stepper Motor Controller 678,921 120 *
Time Delay Relay 511,361 88
Time Delay Relay II jawaharlal@excite.com 203,907 39 *
Touch Switch 255,637 51 *
Video Activated Relay 93,386 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 145,624 10 *
Water Detector With Sump/Bilge Pump Controller 119,279 18 *
Wire Loop Alarm Alex Meaden 177,029 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 267,340 25 *
12VDC To 120VAC Inverter 1,411,127 688
6V to 12V Converter 449,054 121
Automatic 12V Lead Acid Battery Charger 871,690 246
Automatic Load Sensing Power Switch 132,777 16 *
Car Battery Charger 823,008 159 *
Dual Polarity Power Supply 316,987 84 *
Fixed Voltage Power Supply 276,912 52 *
High Current Power Supply 294,254 65 *
High Voltage High Current Power Supply 220,567 35 *
LASER Power Supply 251,823 28
Portable CD Player Adapter For Car 178,579 12 *
Power Supply 685,718 259 *
Solid State Tesla Coil NEW! 116,976 4
Solid State Tesla Coil/High Voltage Generator 386,111 50
Transformerless Power Supply 417,803 117 *
Voltage Inverter 303,023 51 *
Voltage Inverter II 172,239 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 544,394 182
3 Watt FM Transmitter Rae XL Tkacik 294,752 82 *
50 Watt Amplifier 460,640 74
8 Note Tune Player 114,658 12 *
8 Watt Audio Amp 327,197 67 *
Aircraft Radio Communications Receiver 231,398 49 *
Crystal Radio 135,370 53 *
Digital Volume Control 295,410 47 *
Electronic Stethoscope 272,386 141 *
FET Audio Mixer 303,057 41
FM Transmitter 934,006 419
Guitar Fuzz Effect 204,338 52 *
Microphone Mixer Anatoly I. Shikhatov 213,624 26 *
Mono To Stereo Synthesizer oRbEq 97,472 18 *
One Tube Regenerative Radio NEW! 103,355 4 *
Op Amp Radio 342,936 80 *
Single Chip AM Radio NEW! 79,336 2 *
Single Chip FM Radio NEW! 132,050 1 *
Sound Level Meter 303,150 51 *
Stereo Tube Amplifier Weslee Kinsler 231,434 15 *
Tone Control 267,140 31
Transistor Organ 162,116 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,267 27 *
FM Telephone Bug 201,398 57
Phone Busy Indicator 183,378 24 *
Remote Telephone Ringer 92,535 3 *
Ringing Phone Light Flasher 180,659 34 *
Simple Phone Tap Derek Tombrello 328,636 98 *
Telephone Hold Button 96,828 10
Telephone Recorder 181,748 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.