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
Monday, June 27, 2016
Automatic 12V Lead Acid Battery Charger75
12VDC To 120VAC Inverter61
Yesterday
Sunday, June 26, 2016
Time Delay Relay93
12VDC To 120VAC Inverter90
Of All Time 12VDC To 120VAC Inverter1,345,760
FM Transmitter900,061

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 178,700 61 *
Car Alarm Arming Horn Beep Canceller bob 92,607 6 *
Wireless Auto Tachometer 284,344 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 122,555 29 *
Parallel (Printer) Port Interface 224,509 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 374,536 62 *
3 Channel Spectrum Analyzer 169,043 20
40W Fluorescent Lamp Inverter Bart Milnes 275,880 60 *
Adjustable Strobe Light 246,921 36
Black Light 209,904 29
Colour (Sound) Organ 232,493 35
Electronic Dice NEW! 138,045 8 *
Fantastic Atom Expander 147,368 25
Flash Slave Trigger 170,038 17 *
Infa-Red Remote Control 561,644 216 *
IR Remote Extender NEW! 79,014 2 *
IR Remote Jammer Carl 210,358 110 *
IR Remote Switch NEW! 109,943 9 *
LASER Transmitter/Receiver 345,163 91
LED Chaser 389,291 83 *
LED Metronome NEW! 71,132 3 *
LED Thermometer 163,779 22 *
Light/Dark Detector 256,066 89 *
Simple Colour Organ 101,320 10 *
Strobe Light 230,969 27 *
TRIAC Light Dimmer 435,571 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 299,323 122 *
Electromagnetic Levitator NEW! 99,140 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 827,598 214 *
AC Motor Speed Controller 314,456 29 *
Air Flow Detector 205,225 54 *
Digital Keypad Combination Lock 151,321 20
Low Voltage Alarm 177,052 58 *
Pine Racecar Victory Judge 66,489 1 *
Pulse Width Modulation DC Motor Control 587,135 93
Rain Detector 258,326 112 *
Simple Lie Detector 496,707 323
Simple Polarity Tester Dudley LeRoux 115,246 13 *
Simple Servo Controller 171,090 22 *
Simple Touch Switch NEW! 126,464 5 *
Simple Two Speed Contactor DC Motor Controller 163,762 21 *
Stepper Motor Controller 646,033 120 *
Time Delay Relay 487,155 86
Time Delay Relay II jawaharlal@excite.com 191,233 39 *
Touch Switch 242,656 51 *
Video Activated Relay 83,151 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 133,820 10 *
Water Detector With Sump/Bilge Pump Controller 109,612 18 *
Wire Loop Alarm Alex Meaden 165,327 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 243,850 25 *
12VDC To 120VAC Inverter 1,345,760 686
6V to 12V Converter 420,461 121
Automatic 12V Lead Acid Battery Charger 826,172 243
Automatic Load Sensing Power Switch 120,246 15 *
Car Battery Charger 789,369 159 *
Dual Polarity Power Supply 282,892 84 *
Fixed Voltage Power Supply 262,473 52 *
High Current Power Supply 277,911 64 *
High Voltage High Current Power Supply 207,840 35 *
LASER Power Supply 234,794 28
Portable CD Player Adapter For Car 163,934 12 *
Power Supply 656,249 259 *
Solid State Tesla Coil NEW! 103,597 3
Solid State Tesla Coil/High Voltage Generator 359,730 49
Transformerless Power Supply 399,471 116 *
Voltage Inverter 286,234 51 *
Voltage Inverter II 163,405 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 521,495 182
3 Watt FM Transmitter Rae XL Tkacik 277,874 81 *
50 Watt Amplifier 437,118 74
8 Note Tune Player 104,587 12 *
8 Watt Audio Amp 307,620 67 *
Aircraft Radio Communications Receiver 213,885 49 *
Crystal Radio 124,958 53 *
Digital Volume Control 279,622 46 *
Electronic Stethoscope 252,978 141 *
FET Audio Mixer 283,146 40
FM Transmitter 900,061 418
Guitar Fuzz Effect 189,255 52 *
Microphone Mixer Anatoly I. Shikhatov 197,528 25 *
Mono To Stereo Synthesizer oRbEq 87,023 17 *
One Tube Regenerative Radio NEW! 89,200 4 *
Op Amp Radio 321,230 80 *
Single Chip AM Radio NEW! 69,649 2 *
Single Chip FM Radio NEW! 116,438 0 *
Sound Level Meter 288,566 51 *
Stereo Tube Amplifier Weslee Kinsler 219,028 15 *
Tone Control 249,990 31
Transistor Organ 149,465 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 127,872 27 *
FM Telephone Bug 190,627 57
Phone Busy Indicator 162,854 24 *
Remote Telephone Ringer 84,485 3 *
Ringing Phone Light Flasher 166,356 33 *
Simple Phone Tap Derek Tombrello 317,474 98 *
Telephone Hold Button 86,426 9
Telephone Recorder 170,953 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.