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, November 27, 2014
7 Segment LED Counter529
Electronic Stethoscope214
Yesterday
Wednesday, November 26, 2014
7 Segment LED Counter471
Electronic Stethoscope215
Of All Time 12VDC To 120VAC Inverter1,255,558
FM Transmitter844,130

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 167,704 61 *
Car Alarm Arming Horn Beep Canceller bob 85,181 6 *
Wireless Auto Tachometer 260,101 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 110,836 29 *
Parallel (Printer) Port Interface 212,173 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 352,336 61 *
3 Channel Spectrum Analyzer 150,225 19
40W Fluorescent Lamp Inverter Bart Milnes 258,017 60 *
Adjustable Strobe Light 227,862 36
Black Light 193,577 29
Colour (Sound) Organ 216,116 34
Electronic Dice NEW! 122,632 8 *
Fantastic Atom Expander 133,475 24
Flash Slave Trigger 157,823 17 *
Infa-Red Remote Control 517,777 216 *
IR Remote Extender NEW! 66,879 2 *
IR Remote Jammer Carl 194,824 110 *
IR Remote Switch NEW! 96,019 9 *
LASER Transmitter/Receiver 321,464 91
LED Chaser 359,418 83 *
LED Metronome NEW! 61,710 3 *
LED Thermometer 151,667 22 *
Light/Dark Detector 234,449 89 *
Simple Colour Organ 91,668 10 *
Strobe Light 212,795 27 *
TRIAC Light Dimmer 400,167 54

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 279,705 122 *
Electromagnetic Levitator NEW! 86,291 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 749,236 214 *
AC Motor Speed Controller 283,499 29 *
Air Flow Detector 187,087 54 *
Digital Keypad Combination Lock 136,230 20
Low Voltage Alarm 162,387 58 *
Pine Racecar Victory Judge 60,073 1 *
Pulse Width Modulation DC Motor Control 553,996 93
Rain Detector 234,988 111 *
Simple Lie Detector 463,781 321
Simple Polarity Tester Dudley LeRoux 102,009 13 *
Simple Servo Controller 154,605 22 *
Simple Touch Switch NEW! 109,651 5 *
Simple Two Speed Contactor DC Motor Controller 150,622 21 *
Stepper Motor Controller 605,717 120 *
Time Delay Relay 449,060 86
Time Delay Relay II jawaharlal@excite.com 177,523 39 *
Touch Switch 227,050 51 *
Video Activated Relay 73,445 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 121,903 9 *
Water Detector With Sump/Bilge Pump Controller 100,371 18 *
Wire Loop Alarm Alex Meaden 153,211 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 209,960 24 *
12VDC To 120VAC Inverter 1,255,558 684
6V to 12V Converter 382,835 121
Automatic 12V Lead Acid Battery Charger 740,101 238
Automatic Load Sensing Power Switch 108,829 14 *
Car Battery Charger 746,712 158 *
Dual Polarity Power Supply 261,749 84 *
Fixed Voltage Power Supply 243,770 52 *
High Current Power Supply 252,850 64 *
High Voltage High Current Power Supply 193,000 34 *
LASER Power Supply 215,520 28
Portable CD Player Adapter For Car 151,174 12 *
Power Supply 616,545 258 *
Solid State Tesla Coil NEW! 88,935 2
Solid State Tesla Coil/High Voltage Generator 327,512 49
Transformerless Power Supply 372,183 116 *
Voltage Inverter 266,125 51 *
Voltage Inverter II 150,956 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 490,048 182
3 Watt FM Transmitter Rae XL Tkacik 255,140 80 *
50 Watt Amplifier 402,809 73
8 Note Tune Player 94,609 12 *
8 Watt Audio Amp 280,964 66 *
Aircraft Radio Communications Receiver 190,739 49 *
Crystal Radio 113,266 53 *
Digital Volume Control 262,603 46 *
Electronic Stethoscope 214,995 139 *
FET Audio Mixer 262,251 40
FM Transmitter 844,130 418
Guitar Fuzz Effect 171,612 51 *
Microphone Mixer Anatoly I. Shikhatov 181,160 25 *
Mono To Stereo Synthesizer oRbEq 74,911 16 *
One Tube Regenerative Radio NEW! 74,062 4 *
Op Amp Radio 291,337 80 *
Single Chip AM Radio NEW! 50,527 2 *
Single Chip FM Radio NEW! 91,436 0 *
Sound Level Meter 267,099 51 *
Stereo Tube Amplifier Weslee Kinsler 202,990 15 *
Tone Control 230,400 30
Transistor Organ 134,954 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 119,856 27 *
FM Telephone Bug 178,484 57
Phone Busy Indicator 139,031 24 *
Remote Telephone Ringer 77,234 3 *
Ringing Phone Light Flasher 152,385 32 *
Simple Phone Tap Derek Tombrello 301,993 98 *
Telephone Hold Button 76,057 9
Telephone Recorder 160,147 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.