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 21, 2018
12VDC To 120VAC Inverter66
Dual Polarity Power Supply42
Yesterday
Tuesday, November 20, 2018
Stepper Motor Controller76
Dual Polarity Power Supply76
Of All Time 12VDC To 120VAC Inverter1,422,440
FM Transmitter940,972

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 193,493 61 *
Car Alarm Arming Horn Beep Canceller bob 104,890 6 *
Wireless Auto Tachometer 300,351 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 134,725 29 *
Parallel (Printer) Port Interface 239,081 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 396,692 63 *
3 Channel Spectrum Analyzer 189,330 20
40W Fluorescent Lamp Inverter Bart Milnes 293,133 60 *
Adjustable Strobe Light 267,618 36
Black Light 229,333 29
Colour (Sound) Organ 250,955 36
Electronic Dice NEW! 153,776 10 *
Fantastic Atom Expander 165,417 25
Flash Slave Trigger 185,112 18 *
Infa-Red Remote Control 587,070 216 *
IR Remote Extender NEW! 94,494 2 *
IR Remote Jammer Carl 228,926 110 *
IR Remote Switch NEW! 124,626 9 *
LASER Transmitter/Receiver 367,642 92
LED Chaser 410,847 83 *
LED Metronome NEW! 82,489 3 *
LED Thermometer 179,271 22 *
Light/Dark Detector 277,352 90 *
Simple Colour Organ 113,799 10 *
Strobe Light 246,283 27 *
TRIAC Light Dimmer 458,617 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 315,459 122 *
Electromagnetic Levitator NEW! 116,014 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 864,191 214 *
AC Motor Speed Controller 344,087 29 *
Air Flow Detector 223,144 54 *
Digital Keypad Combination Lock 166,557 20
Low Voltage Alarm 196,936 58 *
Pine Racecar Victory Judge 78,024 1 *
Pulse Width Modulation DC Motor Control 613,325 93
Rain Detector 276,341 112 *
Simple Lie Detector 522,216 323
Simple Polarity Tester Dudley LeRoux 131,404 13 *
Simple Servo Controller 186,663 22 *
Simple Touch Switch NEW! 142,485 5 *
Simple Two Speed Contactor DC Motor Controller 177,305 21 *
Stepper Motor Controller 692,859 120 *
Time Delay Relay 517,068 88
Time Delay Relay II jawaharlal@excite.com 208,974 39 *
Touch Switch 259,809 51 *
Video Activated Relay 97,249 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 149,226 10 *
Water Detector With Sump/Bilge Pump Controller 122,835 18 *
Wire Loop Alarm Alex Meaden 179,658 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 272,318 25 *
12VDC To 120VAC Inverter 1,422,440 688
6V to 12V Converter 455,007 121
Automatic 12V Lead Acid Battery Charger 878,016 246
Automatic Load Sensing Power Switch 135,781 16 *
Car Battery Charger 830,885 159 *
Dual Polarity Power Supply 335,942 84 *
Fixed Voltage Power Supply 279,912 52 *
High Current Power Supply 297,390 65 *
High Voltage High Current Power Supply 223,428 35 *
LASER Power Supply 255,376 28
Portable CD Player Adapter For Car 181,549 12 *
Power Supply 691,651 259 *
Solid State Tesla Coil NEW! 120,797 4
Solid State Tesla Coil/High Voltage Generator 392,019 50
Transformerless Power Supply 421,184 117 *
Voltage Inverter 306,060 51 *
Voltage Inverter II 174,574 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 548,850 182
3 Watt FM Transmitter Rae XL Tkacik 298,123 82 *
50 Watt Amplifier 466,216 74
8 Note Tune Player 116,723 12 *
8 Watt Audio Amp 331,324 67 *
Aircraft Radio Communications Receiver 235,260 49 *
Crystal Radio 137,675 53 *
Digital Volume Control 298,567 47 *
Electronic Stethoscope 276,012 141 *
FET Audio Mixer 307,850 41
FM Transmitter 940,972 419
Guitar Fuzz Effect 208,027 52 *
Microphone Mixer Anatoly I. Shikhatov 216,812 26 *
Mono To Stereo Synthesizer oRbEq 100,209 18 *
One Tube Regenerative Radio NEW! 106,403 4 *
Op Amp Radio 346,991 80 *
Single Chip AM Radio NEW! 81,458 2 *
Single Chip FM Radio NEW! 135,577 1 *
Sound Level Meter 306,420 51 *
Stereo Tube Amplifier Weslee Kinsler 234,184 15 *
Tone Control 270,594 31
Transistor Organ 165,018 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 138,604 27 *
FM Telephone Bug 204,318 57
Phone Busy Indicator 186,194 24 *
Remote Telephone Ringer 94,468 3 *
Ringing Phone Light Flasher 183,656 34 *
Simple Phone Tap Derek Tombrello 332,213 98 *
Telephone Hold Button 99,170 10
Telephone Recorder 184,850 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.