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, January 29, 2015
Automatic 12V Lead Acid Battery Charger51
FM Transmitter45
Yesterday
Wednesday, January 28, 2015
Automatic 12V Lead Acid Battery Charger244
12VDC To 120VAC Inverter190
Of All Time 12VDC To 120VAC Inverter1,267,504
FM Transmitter853,903

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 169,175 61 *
Car Alarm Arming Horn Beep Canceller bob 86,003 6 *
Wireless Auto Tachometer 267,850 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 112,418 29 *
Parallel (Printer) Port Interface 213,566 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 355,021 62 *
3 Channel Spectrum Analyzer 152,326 19
40W Fluorescent Lamp Inverter Bart Milnes 260,191 60 *
Adjustable Strobe Light 230,355 36
Black Light 195,594 29
Colour (Sound) Organ 218,051 34
Electronic Dice NEW! 124,434 8 *
Fantastic Atom Expander 135,397 24
Flash Slave Trigger 159,171 17 *
Infa-Red Remote Control 528,649 216 *
IR Remote Extender NEW! 68,251 2 *
IR Remote Jammer Carl 196,617 110 *
IR Remote Switch NEW! 97,664 9 *
LASER Transmitter/Receiver 324,250 91
LED Chaser 367,069 83 *
LED Metronome NEW! 62,634 3 *
LED Thermometer 153,325 22 *
Light/Dark Detector 236,075 89 *
Simple Colour Organ 92,640 10 *
Strobe Light 214,225 27 *
TRIAC Light Dimmer 404,924 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 281,303 122 *
Electromagnetic Levitator NEW! 87,947 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 773,323 214 *
AC Motor Speed Controller 288,619 29 *
Air Flow Detector 189,639 54 *
Digital Keypad Combination Lock 140,180 20
Low Voltage Alarm 163,972 58 *
Pine Racecar Victory Judge 60,765 1 *
Pulse Width Modulation DC Motor Control 558,138 93
Rain Detector 240,087 111 *
Simple Lie Detector 469,397 321
Simple Polarity Tester Dudley LeRoux 103,315 13 *
Simple Servo Controller 157,214 22 *
Simple Touch Switch NEW! 111,754 5 *
Simple Two Speed Contactor DC Motor Controller 152,267 21 *
Stepper Motor Controller 612,053 120 *
Time Delay Relay 454,114 86
Time Delay Relay II jawaharlal@excite.com 179,152 39 *
Touch Switch 228,742 51 *
Video Activated Relay 74,457 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 123,473 9 *
Water Detector With Sump/Bilge Pump Controller 101,359 18 *
Wire Loop Alarm Alex Meaden 154,495 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 214,647 24 *
12VDC To 120VAC Inverter 1,267,504 684
6V to 12V Converter 387,132 121
Automatic 12V Lead Acid Battery Charger 753,409 239
Automatic Load Sensing Power Switch 110,224 14 *
Car Battery Charger 753,338 158 *
Dual Polarity Power Supply 264,425 84 *
Fixed Voltage Power Supply 246,229 52 *
High Current Power Supply 255,508 64 *
High Voltage High Current Power Supply 194,669 34 *
LASER Power Supply 217,819 28
Portable CD Player Adapter For Car 152,659 12 *
Power Supply 623,131 258 *
Solid State Tesla Coil NEW! 90,809 3
Solid State Tesla Coil/High Voltage Generator 333,348 49
Transformerless Power Supply 375,949 116 *
Voltage Inverter 268,434 51 *
Voltage Inverter II 152,775 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 494,891 182
3 Watt FM Transmitter Rae XL Tkacik 257,478 80 *
50 Watt Amplifier 408,791 73
8 Note Tune Player 95,695 12 *
8 Watt Audio Amp 284,687 66 *
Aircraft Radio Communications Receiver 194,069 49 *
Crystal Radio 114,497 53 *
Digital Volume Control 264,508 46 *
Electronic Stethoscope 225,670 139 *
FET Audio Mixer 265,102 40
FM Transmitter 853,903 418
Guitar Fuzz Effect 173,859 51 *
Microphone Mixer Anatoly I. Shikhatov 182,940 25 *
Mono To Stereo Synthesizer oRbEq 76,338 17 *
One Tube Regenerative Radio NEW! 75,799 4 *
Op Amp Radio 294,801 80 *
Single Chip AM Radio NEW! 51,535 2 *
Single Chip FM Radio NEW! 94,921 0 *
Sound Level Meter 269,290 51 *
Stereo Tube Amplifier Weslee Kinsler 206,757 15 *
Tone Control 232,933 30
Transistor Organ 136,429 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 120,758 27 *
FM Telephone Bug 180,073 57
Phone Busy Indicator 141,879 24 *
Remote Telephone Ringer 77,997 3 *
Ringing Phone Light Flasher 153,986 32 *
Simple Phone Tap Derek Tombrello 304,029 98 *
Telephone Hold Button 77,000 9
Telephone Recorder 161,412 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.