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
Saturday, August 23, 2014
22 Watt Audio Amplifier279
FET Audio Mixer232
Yesterday
Friday, August 22, 2014
22 Watt Audio Amplifier561
FET Audio Mixer536
Of All Time 12VDC To 120VAC Inverter1,236,183
FM Transmitter831,942

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 164,491 60 *
Car Alarm Arming Horn Beep Canceller bob 83,580 6 *
Wireless Auto Tachometer 252,902 57

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 108,834 29 *
Parallel (Printer) Port Interface 209,806 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 347,557 61 *
3 Channel Spectrum Analyzer 146,860 19
40W Fluorescent Lamp Inverter Bart Milnes 254,681 60 *
Adjustable Strobe Light 224,305 36
Black Light 190,926 29
Colour (Sound) Organ 213,360 34
Electronic Dice NEW! 119,769 8 *
Fantastic Atom Expander 131,014 24
Flash Slave Trigger 155,818 17 *
Infa-Red Remote Control 499,031 216 *
IR Remote Extender NEW! 64,700 2 *
IR Remote Jammer Carl 191,767 109 *
IR Remote Switch NEW! 93,405 9 *
LASER Transmitter/Receiver 316,424 91
LED Chaser 342,293 83 *
LED Metronome NEW! 60,095 3 *
LED Thermometer 149,291 22 *
Light/Dark Detector 231,580 89 *
Simple Colour Organ 90,189 10 *
Strobe Light 209,587 27 *
TRIAC Light Dimmer 392,875 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 277,039 122 *
Electromagnetic Levitator NEW! 83,979 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 721,315 212 *
AC Motor Speed Controller 276,301 28 *
Air Flow Detector 182,485 54 *
Digital Keypad Combination Lock 132,307 20
Low Voltage Alarm 159,594 58 *
Pine Racecar Victory Judge 58,946 1 *
Pulse Width Modulation DC Motor Control 543,384 92
Rain Detector 231,414 110 *
Simple Lie Detector 455,064 319
Simple Polarity Tester Dudley LeRoux 99,857 13 *
Simple Servo Controller 149,527 22 *
Simple Touch Switch NEW! 106,150 5 *
Simple Two Speed Contactor DC Motor Controller 147,415 21 *
Stepper Motor Controller 595,778 120 *
Time Delay Relay 439,463 85
Time Delay Relay II jawaharlal@excite.com 174,472 39 *
Touch Switch 223,655 51 *
Video Activated Relay 71,427 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 119,608 9 *
Water Detector With Sump/Bilge Pump Controller 98,254 18 *
Wire Loop Alarm Alex Meaden 151,040 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 202,166 23 *
12VDC To 120VAC Inverter 1,236,183 682
6V to 12V Converter 376,198 121
Automatic 12V Lead Acid Battery Charger 721,813 236
Automatic Load Sensing Power Switch 106,857 14 *
Car Battery Charger 738,516 158 *
Dual Polarity Power Supply 257,485 84 *
Fixed Voltage Power Supply 239,667 52 *
High Current Power Supply 248,266 64 *
High Voltage High Current Power Supply 190,314 34 *
LASER Power Supply 211,641 28
Portable CD Player Adapter For Car 148,982 12 *
Power Supply 604,859 258 *
Solid State Tesla Coil NEW! 86,101 2
Solid State Tesla Coil/High Voltage Generator 320,343 49
Transformerless Power Supply 366,349 116 *
Voltage Inverter 262,225 51 *
Voltage Inverter II 148,140 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 475,781 182
3 Watt FM Transmitter Rae XL Tkacik 250,770 77 *
50 Watt Amplifier 396,307 73
8 Note Tune Player 93,035 12 *
8 Watt Audio Amp 275,584 63 *
Aircraft Radio Communications Receiver 186,447 48 *
Crystal Radio 111,342 53 *
Digital Volume Control 259,637 46 *
Electronic Stethoscope 206,464 138 *
FET Audio Mixer 251,408 40
FM Transmitter 831,942 414
Guitar Fuzz Effect 167,850 51 *
Microphone Mixer Anatoly I. Shikhatov 177,906 25 *
Mono To Stereo Synthesizer oRbEq 72,276 16 *
One Tube Regenerative Radio NEW! 70,474 4 *
Op Amp Radio 281,196 80 *
Single Chip AM Radio NEW! 48,741 2 *
Single Chip FM Radio NEW! 87,675 0 *
Sound Level Meter 263,613 50 *
Stereo Tube Amplifier Weslee Kinsler 195,862 15 *
Tone Control 226,671 29
Transistor Organ 132,641 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 118,227 27 *
FM Telephone Bug 175,472 57
Phone Busy Indicator 134,901 22 *
Remote Telephone Ringer 76,055 3 *
Ringing Phone Light Flasher 149,787 32 *
Simple Phone Tap Derek Tombrello 298,318 98 *
Telephone Hold Button 74,402 9
Telephone Recorder 157,975 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.