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
Friday, March 24, 2017
12VDC To 120VAC Inverter45
Automatic 12V Lead Acid Battery Charger26
Yesterday
Thursday, March 23, 2017
12VDC To 120VAC Inverter72
Automatic 12V Lead Acid Battery Charger65
Of All Time 12VDC To 120VAC Inverter1,372,481
FM Transmitter914,498

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 182,324 61 *
Car Alarm Arming Horn Beep Canceller bob 95,309 6 *
Wireless Auto Tachometer 289,074 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 126,238 29 *
Parallel (Printer) Port Interface 228,474 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 382,051 62 *
3 Channel Spectrum Analyzer 175,477 20
40W Fluorescent Lamp Inverter Bart Milnes 281,401 60 *
Adjustable Strobe Light 253,153 36
Black Light 215,500 29
Colour (Sound) Organ 238,114 36
Electronic Dice NEW! 143,773 9 *
Fantastic Atom Expander 152,730 25
Flash Slave Trigger 174,267 17 *
Infa-Red Remote Control 569,581 216 *
IR Remote Extender NEW! 83,395 2 *
IR Remote Jammer Carl 215,914 110 *
IR Remote Switch NEW! 113,982 9 *
LASER Transmitter/Receiver 353,173 92
LED Chaser 395,876 83 *
LED Metronome NEW! 74,595 3 *
LED Thermometer 167,814 22 *
Light/Dark Detector 265,627 89 *
Simple Colour Organ 104,637 10 *
Strobe Light 235,332 27 *
TRIAC Light Dimmer 443,272 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 303,887 122 *
Electromagnetic Levitator NEW! 104,224 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 840,604 214 *
AC Motor Speed Controller 324,644 29 *
Air Flow Detector 211,118 54 *
Digital Keypad Combination Lock 155,724 20
Low Voltage Alarm 183,187 58 *
Pine Racecar Victory Judge 69,342 1 *
Pulse Width Modulation DC Motor Control 597,155 93
Rain Detector 263,667 112 *
Simple Lie Detector 505,297 323
Simple Polarity Tester Dudley LeRoux 120,204 13 *
Simple Servo Controller 176,042 22 *
Simple Touch Switch NEW! 131,300 5 *
Simple Two Speed Contactor DC Motor Controller 168,188 21 *
Stepper Motor Controller 658,258 120 *
Time Delay Relay 497,659 88
Time Delay Relay II jawaharlal@excite.com 196,050 39 *
Touch Switch 247,358 51 *
Video Activated Relay 86,911 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 138,383 10 *
Water Detector With Sump/Bilge Pump Controller 112,628 18 *
Wire Loop Alarm Alex Meaden 169,739 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 254,688 25 *
12VDC To 120VAC Inverter 1,372,481 687
6V to 12V Converter 431,739 121
Automatic 12V Lead Acid Battery Charger 847,008 246
Automatic Load Sensing Power Switch 125,075 15 *
Car Battery Charger 802,837 159 *
Dual Polarity Power Supply 290,187 84 *
Fixed Voltage Power Supply 268,889 52 *
High Current Power Supply 285,008 64 *
High Voltage High Current Power Supply 213,297 35 *
LASER Power Supply 242,137 28
Portable CD Player Adapter For Car 169,823 12 *
Power Supply 669,473 259 *
Solid State Tesla Coil NEW! 108,416 3
Solid State Tesla Coil/High Voltage Generator 371,163 50
Transformerless Power Supply 407,651 117 *
Voltage Inverter 293,493 51 *
Voltage Inverter II 166,848 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 530,974 182
3 Watt FM Transmitter Rae XL Tkacik 285,014 81 *
50 Watt Amplifier 446,800 74
8 Note Tune Player 108,485 12 *
8 Watt Audio Amp 316,069 67 *
Aircraft Radio Communications Receiver 220,673 49 *
Crystal Radio 129,168 53 *
Digital Volume Control 285,806 47 *
Electronic Stethoscope 260,479 141 *
FET Audio Mixer 290,502 40
FM Transmitter 914,498 418
Guitar Fuzz Effect 195,324 52 *
Microphone Mixer Anatoly I. Shikhatov 203,789 26 *
Mono To Stereo Synthesizer oRbEq 91,019 18 *
One Tube Regenerative Radio NEW! 94,971 4 *
Op Amp Radio 329,489 80 *
Single Chip AM Radio NEW! 73,245 2 *
Single Chip FM Radio NEW! 122,715 1 *
Sound Level Meter 294,373 51 *
Stereo Tube Amplifier Weslee Kinsler 223,544 15 *
Tone Control 256,484 31
Transistor Organ 154,226 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 130,956 27 *
FM Telephone Bug 194,501 57
Phone Busy Indicator 171,585 24 *
Remote Telephone Ringer 87,349 3 *
Ringing Phone Light Flasher 171,765 33 *
Simple Phone Tap Derek Tombrello 322,175 98 *
Telephone Hold Button 90,791 9
Telephone Recorder 174,841 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.