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
Wednesday, November 14, 2018
Stepper Motor Controller11
12VDC To 120VAC Inverter10
Yesterday
Tuesday, November 13, 2018
Dual Polarity Power Supply117
Stepper Motor Controller84
Of All Time 12VDC To 120VAC Inverter1,421,864
FM Transmitter940,641

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 193,222 61 *
Car Alarm Arming Horn Beep Canceller bob 104,620 6 *
Wireless Auto Tachometer 300,050 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 134,598 29 *
Parallel (Printer) Port Interface 238,834 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 396,377 63 *
3 Channel Spectrum Analyzer 189,150 20
40W Fluorescent Lamp Inverter Bart Milnes 292,892 60 *
Adjustable Strobe Light 267,305 36
Black Light 229,090 29
Colour (Sound) Organ 250,741 36
Electronic Dice NEW! 153,555 10 *
Fantastic Atom Expander 165,131 25
Flash Slave Trigger 184,913 18 *
Infa-Red Remote Control 586,707 216 *
IR Remote Extender NEW! 94,283 2 *
IR Remote Jammer Carl 228,721 110 *
IR Remote Switch NEW! 124,432 9 *
LASER Transmitter/Receiver 367,352 92
LED Chaser 410,592 83 *
LED Metronome NEW! 82,413 3 *
LED Thermometer 179,108 22 *
Light/Dark Detector 277,227 90 *
Simple Colour Organ 113,584 10 *
Strobe Light 246,044 27 *
TRIAC Light Dimmer 458,392 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 315,208 122 *
Electromagnetic Levitator NEW! 115,782 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 863,596 214 *
AC Motor Speed Controller 343,697 29 *
Air Flow Detector 222,912 54 *
Digital Keypad Combination Lock 166,305 20
Low Voltage Alarm 196,679 58 *
Pine Racecar Victory Judge 77,889 1 *
Pulse Width Modulation DC Motor Control 613,101 93
Rain Detector 276,070 112 *
Simple Lie Detector 521,880 323
Simple Polarity Tester Dudley LeRoux 131,181 13 *
Simple Servo Controller 186,477 22 *
Simple Touch Switch NEW! 142,232 5 *
Simple Two Speed Contactor DC Motor Controller 177,139 21 *
Stepper Motor Controller 692,290 120 *
Time Delay Relay 516,754 88
Time Delay Relay II jawaharlal@excite.com 208,737 39 *
Touch Switch 259,600 51 *
Video Activated Relay 97,052 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 148,925 10 *
Water Detector With Sump/Bilge Pump Controller 122,642 18 *
Wire Loop Alarm Alex Meaden 179,472 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 272,037 25 *
12VDC To 120VAC Inverter 1,421,864 688
6V to 12V Converter 454,707 121
Automatic 12V Lead Acid Battery Charger 877,569 246
Automatic Load Sensing Power Switch 135,623 16 *
Car Battery Charger 830,538 159 *
Dual Polarity Power Supply 335,259 84 *
Fixed Voltage Power Supply 279,727 52 *
High Current Power Supply 297,186 65 *
High Voltage High Current Power Supply 223,262 35 *
LASER Power Supply 255,119 28
Portable CD Player Adapter For Car 181,377 12 *
Power Supply 691,350 259 *
Solid State Tesla Coil NEW! 120,691 4
Solid State Tesla Coil/High Voltage Generator 391,728 50
Transformerless Power Supply 420,962 117 *
Voltage Inverter 305,937 51 *
Voltage Inverter II 174,432 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 548,585 182
3 Watt FM Transmitter Rae XL Tkacik 297,950 82 *
50 Watt Amplifier 465,930 74
8 Note Tune Player 116,581 12 *
8 Watt Audio Amp 331,061 67 *
Aircraft Radio Communications Receiver 235,048 49 *
Crystal Radio 137,555 53 *
Digital Volume Control 298,395 47 *
Electronic Stethoscope 275,822 141 *
FET Audio Mixer 307,675 41
FM Transmitter 940,641 419
Guitar Fuzz Effect 207,787 52 *
Microphone Mixer Anatoly I. Shikhatov 216,632 26 *
Mono To Stereo Synthesizer oRbEq 100,040 18 *
One Tube Regenerative Radio NEW! 106,214 4 *
Op Amp Radio 346,765 80 *
Single Chip AM Radio NEW! 81,379 2 *
Single Chip FM Radio NEW! 135,355 1 *
Sound Level Meter 306,222 51 *
Stereo Tube Amplifier Weslee Kinsler 233,921 15 *
Tone Control 270,382 31
Transistor Organ 164,839 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 138,471 27 *
FM Telephone Bug 204,118 57
Phone Busy Indicator 185,974 24 *
Remote Telephone Ringer 94,323 3 *
Ringing Phone Light Flasher 183,460 34 *
Simple Phone Tap Derek Tombrello 332,061 98 *
Telephone Hold Button 99,001 10
Telephone Recorder 184,694 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.