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
Thursday, November 14, 2019
12VDC To 120VAC Inverter54
Automatic 12V Lead Acid Battery Charger48
Yesterday
Wednesday, November 13, 2019
12VDC To 120VAC Inverter80
Dual Polarity Power Supply77
Of All Time 12VDC To 120VAC Inverter1,451,578
FM Transmitter959,186

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 201,603 61 *
Car Alarm Arming Horn Beep Canceller bob 112,626 6 *
Wireless Auto Tachometer 313,327 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 140,855 29 *
Parallel (Printer) Port Interface 253,427 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 409,889 63 *
3 Channel Spectrum Analyzer 196,871 20
40W Fluorescent Lamp Inverter Bart Milnes 303,055 60 *
Adjustable Strobe Light 277,838 36
Black Light 241,146 29
Colour (Sound) Organ 260,372 36
Electronic Dice NEW! 162,694 10 *
Fantastic Atom Expander 174,997 25
Flash Slave Trigger 193,252 18 *
Infa-Red Remote Control 599,777 216 *
IR Remote Extender NEW! 104,131 2 *
IR Remote Jammer Carl 236,892 110 *
IR Remote Switch NEW! 133,185 9 *
LASER Transmitter/Receiver 378,698 92
LED Chaser 419,574 83 *
LED Metronome NEW! 86,588 3 *
LED Thermometer 186,099 22 *
Light/Dark Detector 284,074 90 *
Simple Colour Organ 119,261 10 *
Strobe Light 252,804 27 *
TRIAC Light Dimmer 471,430 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 326,771 122 *
Electromagnetic Levitator NEW! 123,142 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 882,811 214 *
AC Motor Speed Controller 357,832 29 *
Air Flow Detector 230,244 54 *
Digital Keypad Combination Lock 175,773 20
Low Voltage Alarm 204,488 58 *
Pine Racecar Victory Judge 85,266 1 *
Pulse Width Modulation DC Motor Control 622,322 94
Rain Detector 283,667 112 *
Simple Lie Detector 534,735 323
Simple Polarity Tester Dudley LeRoux 139,755 13 *
Simple Servo Controller 198,707 22 *
Simple Touch Switch NEW! 148,915 5 *
Simple Two Speed Contactor DC Motor Controller 183,962 21 *
Stepper Motor Controller 709,414 120 *
Time Delay Relay 528,378 88
Time Delay Relay II jawaharlal@excite.com 217,901 39 *
Touch Switch 266,837 51 *
Video Activated Relay 102,937 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 157,653 10 *
Water Detector With Sump/Bilge Pump Controller 128,817 18 *
Wire Loop Alarm Alex Meaden 185,836 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 286,191 25 *
12VDC To 120VAC Inverter 1,451,578 689
6V to 12V Converter 473,917 121
Automatic 12V Lead Acid Battery Charger 896,496 247
Automatic Load Sensing Power Switch 143,213 16 *
Car Battery Charger 848,100 159 *
Dual Polarity Power Supply 350,407 84 *
Fixed Voltage Power Supply 287,205 52 *
High Current Power Supply 309,106 65 *
High Voltage High Current Power Supply 230,393 35 *
LASER Power Supply 269,208 28
Portable CD Player Adapter For Car 188,736 12 *
Power Supply 706,784 259 *
Solid State Tesla Coil NEW! 126,839 4
Solid State Tesla Coil/High Voltage Generator 407,868 50
Transformerless Power Supply 436,370 117 *
Voltage Inverter 312,598 51 *
Voltage Inverter II 180,306 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 558,136 182
3 Watt FM Transmitter Rae XL Tkacik 306,882 82 *
50 Watt Amplifier 478,984 74
8 Note Tune Player 122,089 12 *
8 Watt Audio Amp 343,614 67 *
Aircraft Radio Communications Receiver 247,256 49 *
Crystal Radio 144,861 53 *
Digital Volume Control 308,244 47 *
Electronic Stethoscope 285,685 141 *
FET Audio Mixer 316,451 41
FM Transmitter 959,186 419
Guitar Fuzz Effect 220,200 52 *
Microphone Mixer Anatoly I. Shikhatov 226,969 26 *
Mono To Stereo Synthesizer oRbEq 109,995 18 *
One Tube Regenerative Radio NEW! 115,589 4 *
Op Amp Radio 356,676 80 *
Single Chip AM Radio NEW! 85,833 2 *
Single Chip FM Radio NEW! 147,057 1 *
Sound Level Meter 317,479 51 *
Stereo Tube Amplifier Weslee Kinsler 244,778 15 *
Tone Control 282,153 31
Transistor Organ 174,362 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 144,366 27 *
FM Telephone Bug 216,080 57
Phone Busy Indicator 194,881 24 *
Remote Telephone Ringer 99,585 3 *
Ringing Phone Light Flasher 191,450 35 *
Simple Phone Tap Derek Tombrello 343,346 98 *
Telephone Hold Button 109,199 10
Telephone Recorder 192,879 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.