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, January 17, 2017
12VDC To 120VAC Inverter52
Automatic 12V Lead Acid Battery Charger39
Yesterday
Monday, January 16, 2017
12VDC To 120VAC Inverter100
Automatic 12V Lead Acid Battery Charger82
Of All Time 12VDC To 120VAC Inverter1,366,205
FM Transmitter911,631

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 181,546 61 *
Car Alarm Arming Horn Beep Canceller bob 94,734 6 *
Wireless Auto Tachometer 288,039 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 125,387 29 *
Parallel (Printer) Port Interface 227,580 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 380,362 62 *
3 Channel Spectrum Analyzer 174,040 20
40W Fluorescent Lamp Inverter Bart Milnes 280,109 60 *
Adjustable Strobe Light 251,708 36
Black Light 214,107 29
Colour (Sound) Organ 236,744 36
Electronic Dice NEW! 142,493 9 *
Fantastic Atom Expander 151,686 25
Flash Slave Trigger 173,219 17 *
Infa-Red Remote Control 567,977 216 *
IR Remote Extender NEW! 82,312 2 *
IR Remote Jammer Carl 214,728 110 *
IR Remote Switch NEW! 113,008 9 *
LASER Transmitter/Receiver 351,461 92
LED Chaser 394,405 83 *
LED Metronome NEW! 73,789 3 *
LED Thermometer 166,878 22 *
Light/Dark Detector 263,925 89 *
Simple Colour Organ 103,868 10 *
Strobe Light 234,359 27 *
TRIAC Light Dimmer 441,425 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 302,922 122 *
Electromagnetic Levitator NEW! 102,992 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 838,065 214 *
AC Motor Speed Controller 322,313 29 *
Air Flow Detector 209,890 54 *
Digital Keypad Combination Lock 154,808 20
Low Voltage Alarm 181,939 58 *
Pine Racecar Victory Judge 68,747 1 *
Pulse Width Modulation DC Motor Control 595,062 93
Rain Detector 262,611 112 *
Simple Lie Detector 503,613 323
Simple Polarity Tester Dudley LeRoux 119,072 13 *
Simple Servo Controller 175,005 22 *
Simple Touch Switch NEW! 130,266 5 *
Simple Two Speed Contactor DC Motor Controller 167,264 21 *
Stepper Motor Controller 655,853 120 *
Time Delay Relay 495,497 88
Time Delay Relay II jawaharlal@excite.com 195,103 39 *
Touch Switch 246,357 51 *
Video Activated Relay 86,061 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 137,356 10 *
Water Detector With Sump/Bilge Pump Controller 112,013 18 *
Wire Loop Alarm Alex Meaden 168,767 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 252,184 25 *
12VDC To 120VAC Inverter 1,366,205 687
6V to 12V Converter 429,265 121
Automatic 12V Lead Acid Battery Charger 842,421 246
Automatic Load Sensing Power Switch 123,919 15 *
Car Battery Charger 799,559 159 *
Dual Polarity Power Supply 288,623 84 *
Fixed Voltage Power Supply 267,565 52 *
High Current Power Supply 283,468 64 *
High Voltage High Current Power Supply 212,054 35 *
LASER Power Supply 240,498 28
Portable CD Player Adapter For Car 168,375 12 *
Power Supply 666,688 259 *
Solid State Tesla Coil NEW! 107,358 3
Solid State Tesla Coil/High Voltage Generator 368,702 50
Transformerless Power Supply 405,995 117 *
Voltage Inverter 291,834 51 *
Voltage Inverter II 166,107 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 528,826 182
3 Watt FM Transmitter Rae XL Tkacik 283,404 81 *
50 Watt Amplifier 444,623 74
8 Note Tune Player 107,600 12 *
8 Watt Audio Amp 314,250 67 *
Aircraft Radio Communications Receiver 219,032 49 *
Crystal Radio 128,250 53 *
Digital Volume Control 284,394 47 *
Electronic Stethoscope 258,408 141 *
FET Audio Mixer 288,712 40
FM Transmitter 911,631 418
Guitar Fuzz Effect 193,983 52 *
Microphone Mixer Anatoly I. Shikhatov 202,290 26 *
Mono To Stereo Synthesizer oRbEq 90,140 18 *
One Tube Regenerative Radio NEW! 93,478 4 *
Op Amp Radio 327,575 80 *
Single Chip AM Radio NEW! 72,300 2 *
Single Chip FM Radio NEW! 120,617 1 *
Sound Level Meter 293,078 51 *
Stereo Tube Amplifier Weslee Kinsler 222,414 15 *
Tone Control 254,885 31
Transistor Organ 153,126 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,228 27 *
FM Telephone Bug 193,616 57
Phone Busy Indicator 169,487 24 *
Remote Telephone Ringer 86,713 3 *
Ringing Phone Light Flasher 170,520 33 *
Simple Phone Tap Derek Tombrello 321,276 98 *
Telephone Hold Button 89,789 9
Telephone Recorder 174,024 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.