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
Sunday, May 20, 2018
Dual Polarity Power Supply54
12VDC To 120VAC Inverter53
Yesterday
Saturday, May 19, 2018
Light/Dark Detector145
Stepper Motor Controller56
Of All Time 12VDC To 120VAC Inverter1,410,828
FM Transmitter933,875

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 189,267 61 *
Car Alarm Arming Horn Beep Canceller bob 101,171 6 *
Wireless Auto Tachometer 296,925 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 132,554 29 *
Parallel (Printer) Port Interface 235,685 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 392,383 63 *
3 Channel Spectrum Analyzer 184,936 20
40W Fluorescent Lamp Inverter Bart Milnes 289,711 60 *
Adjustable Strobe Light 262,706 36
Black Light 224,461 29
Colour (Sound) Organ 246,808 36
Electronic Dice NEW! 150,438 10 *
Fantastic Atom Expander 160,876 25
Flash Slave Trigger 181,325 18 *
Infa-Red Remote Control 580,439 216 *
IR Remote Extender NEW! 91,113 2 *
IR Remote Jammer Carl 224,421 110 *
IR Remote Switch NEW! 121,524 9 *
LASER Transmitter/Receiver 362,553 92
LED Chaser 405,883 83 *
LED Metronome NEW! 80,409 3 *
LED Thermometer 175,576 22 *
Light/Dark Detector 274,804 90 *
Simple Colour Organ 110,566 10 *
Strobe Light 242,378 27 *
TRIAC Light Dimmer 455,079 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 311,482 122 *
Electromagnetic Levitator NEW! 111,951 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 856,885 214 *
AC Motor Speed Controller 337,824 29 *
Air Flow Detector 219,061 54 *
Digital Keypad Combination Lock 162,674 20
Low Voltage Alarm 192,346 58 *
Pine Racecar Victory Judge 75,037 1 *
Pulse Width Modulation DC Motor Control 609,295 93
Rain Detector 271,306 112 *
Simple Lie Detector 516,434 323
Simple Polarity Tester Dudley LeRoux 127,630 13 *
Simple Servo Controller 184,101 22 *
Simple Touch Switch NEW! 138,231 5 *
Simple Two Speed Contactor DC Motor Controller 175,109 21 *
Stepper Motor Controller 678,792 120 *
Time Delay Relay 511,244 88
Time Delay Relay II jawaharlal@excite.com 203,840 39 *
Touch Switch 255,572 51 *
Video Activated Relay 93,348 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 145,541 10 *
Water Detector With Sump/Bilge Pump Controller 119,229 18 *
Wire Loop Alarm Alex Meaden 176,989 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 267,247 25 *
12VDC To 120VAC Inverter 1,410,828 688
6V to 12V Converter 448,923 121
Automatic 12V Lead Acid Battery Charger 871,524 246
Automatic Load Sensing Power Switch 132,723 16 *
Car Battery Charger 822,736 159 *
Dual Polarity Power Supply 316,895 84 *
Fixed Voltage Power Supply 276,847 52 *
High Current Power Supply 294,198 65 *
High Voltage High Current Power Supply 220,520 35 *
LASER Power Supply 251,750 28
Portable CD Player Adapter For Car 178,531 12 *
Power Supply 685,594 259 *
Solid State Tesla Coil NEW! 116,916 4
Solid State Tesla Coil/High Voltage Generator 386,007 50
Transformerless Power Supply 417,735 117 *
Voltage Inverter 302,957 51 *
Voltage Inverter II 172,199 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 544,299 182
3 Watt FM Transmitter Rae XL Tkacik 294,707 82 *
50 Watt Amplifier 460,521 74
8 Note Tune Player 114,626 12 *
8 Watt Audio Amp 327,111 67 *
Aircraft Radio Communications Receiver 231,236 49 *
Crystal Radio 135,338 53 *
Digital Volume Control 295,333 47 *
Electronic Stethoscope 272,300 141 *
FET Audio Mixer 302,953 41
FM Transmitter 933,875 419
Guitar Fuzz Effect 204,268 52 *
Microphone Mixer Anatoly I. Shikhatov 213,553 26 *
Mono To Stereo Synthesizer oRbEq 97,438 18 *
One Tube Regenerative Radio NEW! 103,268 4 *
Op Amp Radio 342,859 80 *
Single Chip AM Radio NEW! 79,299 2 *
Single Chip FM Radio NEW! 131,989 1 *
Sound Level Meter 303,106 51 *
Stereo Tube Amplifier Weslee Kinsler 231,391 15 *
Tone Control 267,064 31
Transistor Organ 162,066 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 136,243 27 *
FM Telephone Bug 201,370 57
Phone Busy Indicator 183,323 24 *
Remote Telephone Ringer 92,511 3 *
Ringing Phone Light Flasher 180,588 34 *
Simple Phone Tap Derek Tombrello 328,601 98 *
Telephone Hold Button 96,796 10
Telephone Recorder 181,689 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.