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
Sunday, June 25, 2017
12VDC To 120VAC Inverter78
Automatic 12V Lead Acid Battery Charger58
Yesterday
Saturday, June 24, 2017
12VDC To 120VAC Inverter96
Automatic 12V Lead Acid Battery Charger46
Of All Time 12VDC To 120VAC Inverter1,381,413
FM Transmitter918,631

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 183,835 61 *
Car Alarm Arming Horn Beep Canceller bob 96,391 6 *
Wireless Auto Tachometer 290,720 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 127,678 29 *
Parallel (Printer) Port Interface 230,020 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 384,387 62 *
3 Channel Spectrum Analyzer 177,398 20
40W Fluorescent Lamp Inverter Bart Milnes 283,283 60 *
Adjustable Strobe Light 255,238 36
Black Light 217,672 29
Colour (Sound) Organ 240,004 36
Electronic Dice NEW! 145,535 9 *
Fantastic Atom Expander 154,386 25
Flash Slave Trigger 175,987 17 *
Infa-Red Remote Control 572,160 216 *
IR Remote Extender NEW! 85,276 2 *
IR Remote Jammer Carl 217,899 110 *
IR Remote Switch NEW! 115,422 9 *
LASER Transmitter/Receiver 355,417 92
LED Chaser 398,016 83 *
LED Metronome NEW! 75,967 3 *
LED Thermometer 169,435 22 *
Light/Dark Detector 267,767 89 *
Simple Colour Organ 106,066 10 *
Strobe Light 237,004 27 *
TRIAC Light Dimmer 445,962 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 305,357 122 *
Electromagnetic Levitator NEW! 106,026 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 844,195 214 *
AC Motor Speed Controller 327,791 29 *
Air Flow Detector 213,036 54 *
Digital Keypad Combination Lock 157,058 20
Low Voltage Alarm 185,301 58 *
Pine Racecar Victory Judge 70,631 1 *
Pulse Width Modulation DC Motor Control 600,037 93
Rain Detector 265,580 112 *
Simple Lie Detector 507,685 323
Simple Polarity Tester Dudley LeRoux 121,838 13 *
Simple Servo Controller 177,603 22 *
Simple Touch Switch NEW! 132,966 5 *
Simple Two Speed Contactor DC Motor Controller 169,784 21 *
Stepper Motor Controller 661,636 120 *
Time Delay Relay 500,675 88
Time Delay Relay II jawaharlal@excite.com 197,784 39 *
Touch Switch 249,084 51 *
Video Activated Relay 88,473 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 139,908 10 *
Water Detector With Sump/Bilge Pump Controller 113,748 18 *
Wire Loop Alarm Alex Meaden 171,355 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 257,855 25 *
12VDC To 120VAC Inverter 1,381,413 687
6V to 12V Converter 435,276 121
Automatic 12V Lead Acid Battery Charger 852,009 246
Automatic Load Sensing Power Switch 126,890 15 *
Car Battery Charger 806,428 159 *
Dual Polarity Power Supply 294,501 84 *
Fixed Voltage Power Supply 270,629 52 *
High Current Power Supply 287,285 64 *
High Voltage High Current Power Supply 214,960 35 *
LASER Power Supply 244,255 28
Portable CD Player Adapter For Car 171,938 12 *
Power Supply 672,962 259 *
Solid State Tesla Coil NEW! 110,092 3
Solid State Tesla Coil/High Voltage Generator 374,675 50
Transformerless Power Supply 409,876 117 *
Voltage Inverter 295,832 51 *
Voltage Inverter II 167,932 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 533,794 182
3 Watt FM Transmitter Rae XL Tkacik 286,838 81 *
50 Watt Amplifier 449,587 74
8 Note Tune Player 109,783 12 *
8 Watt Audio Amp 318,421 67 *
Aircraft Radio Communications Receiver 223,101 49 *
Crystal Radio 130,548 53 *
Digital Volume Control 287,843 47 *
Electronic Stethoscope 263,272 141 *
FET Audio Mixer 293,001 40
FM Transmitter 918,631 418
Guitar Fuzz Effect 197,256 52 *
Microphone Mixer Anatoly I. Shikhatov 206,082 26 *
Mono To Stereo Synthesizer oRbEq 92,427 18 *
One Tube Regenerative Radio NEW! 96,880 4 *
Op Amp Radio 332,124 80 *
Single Chip AM Radio NEW! 74,691 2 *
Single Chip FM Radio NEW! 124,926 1 *
Sound Level Meter 296,159 51 *
Stereo Tube Amplifier Weslee Kinsler 225,196 15 *
Tone Control 258,666 31
Transistor Organ 155,880 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 132,260 27 *
FM Telephone Bug 195,889 57
Phone Busy Indicator 174,311 24 *
Remote Telephone Ringer 88,356 3 *
Ringing Phone Light Flasher 173,742 33 *
Simple Phone Tap Derek Tombrello 323,540 98 *
Telephone Hold Button 92,364 9
Telephone Recorder 176,449 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.