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, February 17, 2019
Solid State Tesla Coil/High Voltage Generator29
FM Telephone Bug28
Yesterday
Saturday, February 16, 2019
7 Segment LED Counter70
12VDC To 120VAC Inverter69
Of All Time 12VDC To 120VAC Inverter1,428,831
FM Transmitter945,759

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 195,867 61 *
Car Alarm Arming Horn Beep Canceller bob 107,169 6 *
Wireless Auto Tachometer 303,908 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 136,381 29 *
Parallel (Printer) Port Interface 243,089 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 400,177 63 *
3 Channel Spectrum Analyzer 191,282 20
40W Fluorescent Lamp Inverter Bart Milnes 295,794 60 *
Adjustable Strobe Light 270,693 36
Black Light 232,256 29
Colour (Sound) Organ 253,544 36
Electronic Dice NEW! 156,179 10 *
Fantastic Atom Expander 168,059 25
Flash Slave Trigger 187,225 18 *
Infa-Red Remote Control 590,180 216 *
IR Remote Extender NEW! 97,036 2 *
IR Remote Jammer Carl 230,900 110 *
IR Remote Switch NEW! 127,048 9 *
LASER Transmitter/Receiver 370,612 92
LED Chaser 413,199 83 *
LED Metronome NEW! 83,395 3 *
LED Thermometer 180,920 22 *
Light/Dark Detector 279,034 90 *
Simple Colour Organ 115,477 10 *
Strobe Light 248,084 27 *
TRIAC Light Dimmer 461,472 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 318,476 122 *
Electromagnetic Levitator NEW! 118,111 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 869,162 214 *
AC Motor Speed Controller 348,005 29 *
Air Flow Detector 225,172 54 *
Digital Keypad Combination Lock 169,120 20
Low Voltage Alarm 199,127 58 *
Pine Racecar Victory Judge 79,751 1 *
Pulse Width Modulation DC Motor Control 615,708 93
Rain Detector 278,682 112 *
Simple Lie Detector 525,867 323
Simple Polarity Tester Dudley LeRoux 133,580 13 *
Simple Servo Controller 190,520 22 *
Simple Touch Switch NEW! 144,374 5 *
Simple Two Speed Contactor DC Motor Controller 178,957 21 *
Stepper Motor Controller 698,976 120 *
Time Delay Relay 520,166 88
Time Delay Relay II jawaharlal@excite.com 210,945 39 *
Touch Switch 261,747 51 *
Video Activated Relay 98,932 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 151,550 10 *
Water Detector With Sump/Bilge Pump Controller 124,481 18 *
Wire Loop Alarm Alex Meaden 181,288 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 276,324 25 *
12VDC To 120VAC Inverter 1,428,831 688
6V to 12V Converter 458,938 121
Automatic 12V Lead Acid Battery Charger 882,678 246
Automatic Load Sensing Power Switch 137,741 16 *
Car Battery Charger 836,009 159 *
Dual Polarity Power Supply 343,474 84 *
Fixed Voltage Power Supply 281,919 52 *
High Current Power Supply 300,541 65 *
High Voltage High Current Power Supply 225,416 35 *
LASER Power Supply 259,541 28
Portable CD Player Adapter For Car 183,609 12 *
Power Supply 695,970 259 *
Solid State Tesla Coil NEW! 122,249 4
Solid State Tesla Coil/High Voltage Generator 396,551 50
Transformerless Power Supply 423,972 117 *
Voltage Inverter 307,459 51 *
Voltage Inverter II 176,127 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 551,373 182
3 Watt FM Transmitter Rae XL Tkacik 300,653 82 *
50 Watt Amplifier 470,385 74
8 Note Tune Player 118,209 12 *
8 Watt Audio Amp 334,885 67 *
Aircraft Radio Communications Receiver 238,583 49 *
Crystal Radio 139,630 53 *
Digital Volume Control 301,001 47 *
Electronic Stethoscope 278,657 141 *
FET Audio Mixer 310,202 41
FM Transmitter 945,759 419
Guitar Fuzz Effect 211,782 52 *
Microphone Mixer Anatoly I. Shikhatov 219,308 26 *
Mono To Stereo Synthesizer oRbEq 103,436 18 *
One Tube Regenerative Radio NEW! 108,756 4 *
Op Amp Radio 349,498 80 *
Single Chip AM Radio NEW! 82,524 2 *
Single Chip FM Radio NEW! 138,899 1 *
Sound Level Meter 309,420 51 *
Stereo Tube Amplifier Weslee Kinsler 237,081 15 *
Tone Control 273,680 31
Transistor Organ 167,388 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 140,132 27 *
FM Telephone Bug 208,171 57
Phone Busy Indicator 188,494 24 *
Remote Telephone Ringer 95,867 3 *
Ringing Phone Light Flasher 185,620 34 *
Simple Phone Tap Derek Tombrello 334,684 98 *
Telephone Hold Button 102,121 10
Telephone Recorder 186,656 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.