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, July 18, 2019
7 Segment LED Counter9
FM Transmitter7
Yesterday
Wednesday, July 17, 2019
Ringing Phone Light Flasher67
12VDC To 120VAC Inverter64
Of All Time 12VDC To 120VAC Inverter1,444,063
FM Transmitter954,106

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 199,765 61 *
Car Alarm Arming Horn Beep Canceller bob 110,944 6 *
Wireless Auto Tachometer 309,770 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 139,182 29 *
Parallel (Printer) Port Interface 249,541 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 406,274 63 *
3 Channel Spectrum Analyzer 194,794 20
40W Fluorescent Lamp Inverter Bart Milnes 300,065 60 *
Adjustable Strobe Light 275,458 36
Black Light 237,945 29
Colour (Sound) Organ 258,140 36
Electronic Dice NEW! 160,554 10 *
Fantastic Atom Expander 172,545 25
Flash Slave Trigger 191,387 18 *
Infa-Red Remote Control 596,834 216 *
IR Remote Extender NEW! 101,438 2 *
IR Remote Jammer Carl 234,296 110 *
IR Remote Switch NEW! 131,040 9 *
LASER Transmitter/Receiver 375,791 92
LED Chaser 416,836 83 *
LED Metronome NEW! 85,185 3 *
LED Thermometer 184,011 22 *
Light/Dark Detector 282,087 90 *
Simple Colour Organ 117,930 10 *
Strobe Light 250,935 27 *
TRIAC Light Dimmer 466,560 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 323,627 122 *
Electromagnetic Levitator NEW! 121,484 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 877,746 214 *
AC Motor Speed Controller 353,754 29 *
Air Flow Detector 228,387 54 *
Digital Keypad Combination Lock 172,956 20
Low Voltage Alarm 202,373 58 *
Pine Racecar Victory Judge 83,026 1 *
Pulse Width Modulation DC Motor Control 619,813 93
Rain Detector 281,836 112 *
Simple Lie Detector 531,107 323
Simple Polarity Tester Dudley LeRoux 137,703 13 *
Simple Servo Controller 195,931 22 *
Simple Touch Switch NEW! 147,319 5 *
Simple Two Speed Contactor DC Motor Controller 181,946 21 *
Stepper Motor Controller 705,820 120 *
Time Delay Relay 524,862 88
Time Delay Relay II jawaharlal@excite.com 215,836 39 *
Touch Switch 264,835 51 *
Video Activated Relay 101,513 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 155,361 10 *
Water Detector With Sump/Bilge Pump Controller 127,091 18 *
Wire Loop Alarm Alex Meaden 184,124 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 282,458 25 *
12VDC To 120VAC Inverter 1,444,063 688
6V to 12V Converter 467,907 121
Automatic 12V Lead Acid Battery Charger 890,636 246
Automatic Load Sensing Power Switch 141,048 16 *
Car Battery Charger 843,105 159 *
Dual Polarity Power Supply 347,779 84 *
Fixed Voltage Power Supply 285,160 52 *
High Current Power Supply 305,609 65 *
High Voltage High Current Power Supply 228,527 35 *
LASER Power Supply 265,867 28
Portable CD Player Adapter For Car 186,870 12 *
Power Supply 702,125 259 *
Solid State Tesla Coil NEW! 124,650 4
Solid State Tesla Coil/High Voltage Generator 403,660 50
Transformerless Power Supply 433,060 117 *
Voltage Inverter 310,540 51 *
Voltage Inverter II 178,733 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 555,616 182
3 Watt FM Transmitter Rae XL Tkacik 304,412 82 *
50 Watt Amplifier 476,055 74
8 Note Tune Player 120,669 12 *
8 Watt Audio Amp 340,278 67 *
Aircraft Radio Communications Receiver 243,943 49 *
Crystal Radio 142,532 53 *
Digital Volume Control 305,265 47 *
Electronic Stethoscope 282,875 141 *
FET Audio Mixer 314,222 41
FM Transmitter 954,106 419
Guitar Fuzz Effect 217,156 52 *
Microphone Mixer Anatoly I. Shikhatov 223,735 26 *
Mono To Stereo Synthesizer oRbEq 107,320 18 *
One Tube Regenerative Radio NEW! 112,457 4 *
Op Amp Radio 353,997 80 *
Single Chip AM Radio NEW! 84,309 2 *
Single Chip FM Radio NEW! 143,762 1 *
Sound Level Meter 314,638 51 *
Stereo Tube Amplifier Weslee Kinsler 241,811 15 *
Tone Control 278,747 31
Transistor Organ 171,535 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 142,778 27 *
FM Telephone Bug 213,531 57
Phone Busy Indicator 192,310 24 *
Remote Telephone Ringer 98,359 3 *
Ringing Phone Light Flasher 189,171 34 *
Simple Phone Tap Derek Tombrello 338,810 98 *
Telephone Hold Button 106,677 10
Telephone Recorder 190,301 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.