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
Wednesday, November 22, 2017
12VDC To 120VAC Inverter46
Telephone Recorder41
Yesterday
Tuesday, November 21, 2017
12VDC To 120VAC Inverter90
Car Battery Charger76
Of All Time 12VDC To 120VAC Inverter1,396,279
FM Transmitter925,687

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 186,518 61 *
Car Alarm Arming Horn Beep Canceller bob 98,726 6 *
Wireless Auto Tachometer 293,833 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 130,300 29 *
Parallel (Printer) Port Interface 232,609 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 388,164 62 *
3 Channel Spectrum Analyzer 180,878 20
40W Fluorescent Lamp Inverter Bart Milnes 286,448 60 *
Adjustable Strobe Light 258,944 36
Black Light 220,843 29
Colour (Sound) Organ 243,166 36
Electronic Dice NEW! 147,690 9 *
Fantastic Atom Expander 157,648 25
Flash Slave Trigger 178,645 17 *
Infa-Red Remote Control 575,640 216 *
IR Remote Extender NEW! 87,863 2 *
IR Remote Jammer Carl 220,866 110 *
IR Remote Switch NEW! 117,893 9 *
LASER Transmitter/Receiver 358,600 92
LED Chaser 401,853 83 *
LED Metronome NEW! 77,881 3 *
LED Thermometer 172,346 22 *
Light/Dark Detector 271,305 89 *
Simple Colour Organ 108,199 10 *
Strobe Light 239,795 27 *
TRIAC Light Dimmer 450,405 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 308,100 122 *
Electromagnetic Levitator NEW! 108,798 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 849,867 214 *
AC Motor Speed Controller 332,661 29 *
Air Flow Detector 215,947 54 *
Digital Keypad Combination Lock 159,751 20
Low Voltage Alarm 189,057 58 *
Pine Racecar Victory Judge 72,824 1 *
Pulse Width Modulation DC Motor Control 604,660 93
Rain Detector 268,456 112 *
Simple Lie Detector 511,595 323
Simple Polarity Tester Dudley LeRoux 124,566 13 *
Simple Servo Controller 180,837 22 *
Simple Touch Switch NEW! 135,397 5 *
Simple Two Speed Contactor DC Motor Controller 172,410 21 *
Stepper Motor Controller 668,552 120 *
Time Delay Relay 505,457 88
Time Delay Relay II jawaharlal@excite.com 200,663 39 *
Touch Switch 252,572 51 *
Video Activated Relay 90,883 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 142,135 10 *
Water Detector With Sump/Bilge Pump Controller 116,172 18 *
Wire Loop Alarm Alex Meaden 174,316 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 262,095 25 *
12VDC To 120VAC Inverter 1,396,279 687
6V to 12V Converter 441,279 121
Automatic 12V Lead Acid Battery Charger 860,365 246
Automatic Load Sensing Power Switch 129,495 15 *
Car Battery Charger 813,462 159 *
Dual Polarity Power Supply 305,665 84 *
Fixed Voltage Power Supply 273,596 52 *
High Current Power Supply 290,774 64 *
High Voltage High Current Power Supply 217,586 35 *
LASER Power Supply 247,840 28
Portable CD Player Adapter For Car 175,261 12 *
Power Supply 678,810 259 *
Solid State Tesla Coil NEW! 112,930 3
Solid State Tesla Coil/High Voltage Generator 379,997 50
Transformerless Power Supply 413,626 117 *
Voltage Inverter 299,467 51 *
Voltage Inverter II 169,751 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 538,787 182
3 Watt FM Transmitter Rae XL Tkacik 290,585 81 *
50 Watt Amplifier 454,661 74
8 Note Tune Player 112,145 12 *
8 Watt Audio Amp 322,946 67 *
Aircraft Radio Communications Receiver 227,099 49 *
Crystal Radio 132,991 53 *
Digital Volume Control 291,608 47 *
Electronic Stethoscope 267,283 141 *
FET Audio Mixer 297,764 40
FM Transmitter 925,687 418
Guitar Fuzz Effect 200,687 52 *
Microphone Mixer Anatoly I. Shikhatov 209,480 26 *
Mono To Stereo Synthesizer oRbEq 94,942 18 *
One Tube Regenerative Radio NEW! 99,834 4 *
Op Amp Radio 336,641 80 *
Single Chip AM Radio NEW! 76,730 2 *
Single Chip FM Radio NEW! 128,100 1 *
Sound Level Meter 299,309 51 *
Stereo Tube Amplifier Weslee Kinsler 228,299 15 *
Tone Control 263,237 31
Transistor Organ 158,669 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 134,183 27 *
FM Telephone Bug 198,454 57
Phone Busy Indicator 178,103 24 *
Remote Telephone Ringer 90,362 3 *
Ringing Phone Light Flasher 177,017 33 *
Simple Phone Tap Derek Tombrello 326,207 98 *
Telephone Hold Button 94,485 9
Telephone Recorder 179,092 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.