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
Tuesday, May 26, 2015
Automatic 12V Lead Acid Battery Charger209
12VDC To 120VAC Inverter157
Yesterday
Monday, May 25, 2015
Automatic 12V Lead Acid Battery Charger191
12VDC To 120VAC Inverter159
Of All Time 12VDC To 120VAC Inverter1,289,942
FM Transmitter868,498

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 171,945 61 *
Car Alarm Arming Horn Beep Canceller bob 87,525 6 *
Wireless Auto Tachometer 274,709 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 115,239 29 *
Parallel (Printer) Port Interface 216,268 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 359,813 62 *
3 Channel Spectrum Analyzer 156,553 19
40W Fluorescent Lamp Inverter Bart Milnes 264,002 60 *
Adjustable Strobe Light 234,551 36
Black Light 199,226 29
Colour (Sound) Organ 221,419 34
Electronic Dice NEW! 128,363 8 *
Fantastic Atom Expander 138,543 24
Flash Slave Trigger 162,215 17 *
Infa-Red Remote Control 541,853 216 *
IR Remote Extender NEW! 71,033 2 *
IR Remote Jammer Carl 200,921 110 *
IR Remote Switch NEW! 100,893 9 *
LASER Transmitter/Receiver 329,627 91
LED Chaser 375,569 83 *
LED Metronome NEW! 64,812 3 *
LED Thermometer 156,281 22 *
Light/Dark Detector 239,715 89 *
Simple Colour Organ 95,263 10 *
Strobe Light 219,189 27 *
TRIAC Light Dimmer 411,923 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 286,897 122 *
Electromagnetic Levitator NEW! 90,775 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 793,167 214 *
AC Motor Speed Controller 296,253 29 *
Air Flow Detector 193,547 54 *
Digital Keypad Combination Lock 143,813 20
Low Voltage Alarm 167,264 58 *
Pine Racecar Victory Judge 62,152 1 *
Pulse Width Modulation DC Motor Control 567,191 93
Rain Detector 245,844 111 *
Simple Lie Detector 476,646 321
Simple Polarity Tester Dudley LeRoux 105,828 13 *
Simple Servo Controller 161,428 22 *
Simple Touch Switch NEW! 115,770 5 *
Simple Two Speed Contactor DC Motor Controller 154,944 21 *
Stepper Motor Controller 622,087 120 *
Time Delay Relay 463,281 86
Time Delay Relay II jawaharlal@excite.com 182,171 39 *
Touch Switch 231,827 51 *
Video Activated Relay 76,531 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 125,861 9 *
Water Detector With Sump/Bilge Pump Controller 103,276 18 *
Wire Loop Alarm Alex Meaden 156,927 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 223,649 24 *
12VDC To 120VAC Inverter 1,289,942 684
6V to 12V Converter 395,344 121
Automatic 12V Lead Acid Battery Charger 777,123 239
Automatic Load Sensing Power Switch 112,672 14 *
Car Battery Charger 762,804 158 *
Dual Polarity Power Supply 269,478 84 *
Fixed Voltage Power Supply 250,379 52 *
High Current Power Supply 262,775 64 *
High Voltage High Current Power Supply 197,499 34 *
LASER Power Supply 221,864 28
Portable CD Player Adapter For Car 154,955 12 *
Power Supply 633,052 258 *
Solid State Tesla Coil NEW! 94,232 3
Solid State Tesla Coil/High Voltage Generator 339,927 49
Transformerless Power Supply 382,726 116 *
Voltage Inverter 272,566 51 *
Voltage Inverter II 155,800 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 502,916 182
3 Watt FM Transmitter Rae XL Tkacik 262,152 80 *
50 Watt Amplifier 416,512 73
8 Note Tune Player 97,848 12 *
8 Watt Audio Amp 290,982 66 *
Aircraft Radio Communications Receiver 199,552 49 *
Crystal Radio 117,287 53 *
Digital Volume Control 268,226 46 *
Electronic Stethoscope 234,574 139 *
FET Audio Mixer 270,035 40
FM Transmitter 868,498 418
Guitar Fuzz Effect 177,810 51 *
Microphone Mixer Anatoly I. Shikhatov 186,599 25 *
Mono To Stereo Synthesizer oRbEq 78,742 17 *
One Tube Regenerative Radio NEW! 78,772 4 *
Op Amp Radio 303,270 80 *
Single Chip AM Radio NEW! 62,521 2 *
Single Chip FM Radio NEW! 105,601 0 *
Sound Level Meter 273,584 51 *
Stereo Tube Amplifier Weslee Kinsler 209,930 15 *
Tone Control 237,684 30
Transistor Organ 139,559 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 122,483 27 *
FM Telephone Bug 182,628 57
Phone Busy Indicator 147,086 24 *
Remote Telephone Ringer 79,223 3 *
Ringing Phone Light Flasher 156,988 32 *
Simple Phone Tap Derek Tombrello 307,078 98 *
Telephone Hold Button 78,754 9
Telephone Recorder 163,623 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.