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, March 27, 2015
Automatic 12V Lead Acid Battery Charger119
7 Segment LED Counter111
Yesterday
Thursday, March 26, 2015
7 Segment LED Counter227
Automatic 12V Lead Acid Battery Charger198
Of All Time 12VDC To 120VAC Inverter1,279,081
FM Transmitter862,580

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 170,564 61 *
Car Alarm Arming Horn Beep Canceller bob 86,835 6 *
Wireless Auto Tachometer 272,611 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 114,041 29 *
Parallel (Printer) Port Interface 215,081 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 357,587 62 *
3 Channel Spectrum Analyzer 154,419 19
40W Fluorescent Lamp Inverter Bart Milnes 262,370 60 *
Adjustable Strobe Light 232,516 36
Black Light 197,716 29
Colour (Sound) Organ 219,942 34
Electronic Dice NEW! 126,688 8 *
Fantastic Atom Expander 137,235 24
Flash Slave Trigger 161,174 17 *
Infa-Red Remote Control 535,658 216 *
IR Remote Extender NEW! 69,649 2 *
IR Remote Jammer Carl 199,553 110 *
IR Remote Switch NEW! 99,554 9 *
LASER Transmitter/Receiver 327,130 91
LED Chaser 371,838 83 *
LED Metronome NEW! 63,936 3 *
LED Thermometer 155,028 22 *
Light/Dark Detector 237,883 89 *
Simple Colour Organ 94,034 10 *
Strobe Light 216,720 27 *
TRIAC Light Dimmer 409,267 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 283,793 122 *
Electromagnetic Levitator NEW! 89,423 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 783,830 214 *
AC Motor Speed Controller 292,769 29 *
Air Flow Detector 191,867 54 *
Digital Keypad Combination Lock 142,243 20
Low Voltage Alarm 165,724 58 *
Pine Racecar Victory Judge 61,551 1 *
Pulse Width Modulation DC Motor Control 562,819 93
Rain Detector 243,179 111 *
Simple Lie Detector 473,624 321
Simple Polarity Tester Dudley LeRoux 104,708 13 *
Simple Servo Controller 159,445 22 *
Simple Touch Switch NEW! 114,090 5 *
Simple Two Speed Contactor DC Motor Controller 153,735 21 *
Stepper Motor Controller 617,729 120 *
Time Delay Relay 459,030 86
Time Delay Relay II jawaharlal@excite.com 180,857 39 *
Touch Switch 230,491 51 *
Video Activated Relay 75,651 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 124,797 9 *
Water Detector With Sump/Bilge Pump Controller 102,474 18 *
Wire Loop Alarm Alex Meaden 155,923 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 219,398 24 *
12VDC To 120VAC Inverter 1,279,081 684
6V to 12V Converter 391,021 121
Automatic 12V Lead Acid Battery Charger 765,590 239
Automatic Load Sensing Power Switch 111,423 14 *
Car Battery Charger 758,771 158 *
Dual Polarity Power Supply 267,282 84 *
Fixed Voltage Power Supply 248,362 52 *
High Current Power Supply 259,223 64 *
High Voltage High Current Power Supply 196,221 34 *
LASER Power Supply 220,129 28
Portable CD Player Adapter For Car 153,812 12 *
Power Supply 628,701 258 *
Solid State Tesla Coil NEW! 92,691 3
Solid State Tesla Coil/High Voltage Generator 336,854 49
Transformerless Power Supply 379,562 116 *
Voltage Inverter 270,672 51 *
Voltage Inverter II 154,299 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 499,461 182
3 Watt FM Transmitter Rae XL Tkacik 260,065 80 *
50 Watt Amplifier 413,644 73
8 Note Tune Player 96,955 12 *
8 Watt Audio Amp 288,535 66 *
Aircraft Radio Communications Receiver 196,779 49 *
Crystal Radio 116,040 53 *
Digital Volume Control 266,570 46 *
Electronic Stethoscope 230,701 139 *
FET Audio Mixer 268,047 40
FM Transmitter 862,580 418
Guitar Fuzz Effect 176,107 51 *
Microphone Mixer Anatoly I. Shikhatov 184,921 25 *
Mono To Stereo Synthesizer oRbEq 77,930 17 *
One Tube Regenerative Radio NEW! 77,426 4 *
Op Amp Radio 299,223 80 *
Single Chip AM Radio NEW! 52,658 2 *
Single Chip FM Radio NEW! 98,332 0 *
Sound Level Meter 271,609 51 *
Stereo Tube Amplifier Weslee Kinsler 208,600 15 *
Tone Control 235,760 30
Transistor Organ 138,259 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 121,757 27 *
FM Telephone Bug 181,545 57
Phone Busy Indicator 144,681 24 *
Remote Telephone Ringer 78,635 3 *
Ringing Phone Light Flasher 155,660 32 *
Simple Phone Tap Derek Tombrello 305,772 98 *
Telephone Hold Button 77,931 9
Telephone Recorder 162,577 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.