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
Sunday, November 18, 2018
Automatic 12V Lead Acid Battery Charger105
7 Segment LED Counter74
Yesterday
Saturday, November 17, 2018
Dual Polarity Power Supply112
7 Segment LED Counter106
Of All Time 12VDC To 120VAC Inverter1,422,197
FM Transmitter940,851

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 193,398 61 *
Car Alarm Arming Horn Beep Canceller bob 104,797 6 *
Wireless Auto Tachometer 300,225 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 134,676 29 *
Parallel (Printer) Port Interface 238,948 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 396,563 63 *
3 Channel Spectrum Analyzer 189,264 20
40W Fluorescent Lamp Inverter Bart Milnes 293,044 60 *
Adjustable Strobe Light 267,507 36
Black Light 229,230 29
Colour (Sound) Organ 250,861 36
Electronic Dice NEW! 153,677 10 *
Fantastic Atom Expander 165,304 25
Flash Slave Trigger 185,032 18 *
Infa-Red Remote Control 586,928 216 *
IR Remote Extender NEW! 94,399 2 *
IR Remote Jammer Carl 228,841 110 *
IR Remote Switch NEW! 124,547 9 *
LASER Transmitter/Receiver 367,500 92
LED Chaser 410,734 83 *
LED Metronome NEW! 82,457 3 *
LED Thermometer 179,212 22 *
Light/Dark Detector 277,294 90 *
Simple Colour Organ 113,710 10 *
Strobe Light 246,202 27 *
TRIAC Light Dimmer 458,520 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 315,348 122 *
Electromagnetic Levitator NEW! 115,920 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 863,950 214 *
AC Motor Speed Controller 343,915 29 *
Air Flow Detector 223,048 54 *
Digital Keypad Combination Lock 166,455 20
Low Voltage Alarm 196,836 58 *
Pine Racecar Victory Judge 77,970 1 *
Pulse Width Modulation DC Motor Control 613,228 93
Rain Detector 276,237 112 *
Simple Lie Detector 522,043 323
Simple Polarity Tester Dudley LeRoux 131,328 13 *
Simple Servo Controller 186,565 22 *
Simple Touch Switch NEW! 142,393 5 *
Simple Two Speed Contactor DC Motor Controller 177,231 21 *
Stepper Motor Controller 692,659 120 *
Time Delay Relay 516,948 88
Time Delay Relay II jawaharlal@excite.com 208,889 39 *
Touch Switch 259,724 51 *
Video Activated Relay 97,165 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 149,088 10 *
Water Detector With Sump/Bilge Pump Controller 122,755 18 *
Wire Loop Alarm Alex Meaden 179,568 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 272,185 25 *
12VDC To 120VAC Inverter 1,422,197 688
6V to 12V Converter 454,878 121
Automatic 12V Lead Acid Battery Charger 877,852 246
Automatic Load Sensing Power Switch 135,708 16 *
Car Battery Charger 830,748 159 *
Dual Polarity Power Supply 335,702 84 *
Fixed Voltage Power Supply 279,829 52 *
High Current Power Supply 297,296 65 *
High Voltage High Current Power Supply 223,355 35 *
LASER Power Supply 255,237 28
Portable CD Player Adapter For Car 181,485 12 *
Power Supply 691,510 259 *
Solid State Tesla Coil NEW! 120,748 4
Solid State Tesla Coil/High Voltage Generator 391,862 50
Transformerless Power Supply 421,082 117 *
Voltage Inverter 306,003 51 *
Voltage Inverter II 174,514 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 548,750 182
3 Watt FM Transmitter Rae XL Tkacik 298,046 82 *
50 Watt Amplifier 466,087 74
8 Note Tune Player 116,656 12 *
8 Watt Audio Amp 331,208 67 *
Aircraft Radio Communications Receiver 235,157 49 *
Crystal Radio 137,627 53 *
Digital Volume Control 298,480 47 *
Electronic Stethoscope 275,942 141 *
FET Audio Mixer 307,777 41
FM Transmitter 940,851 419
Guitar Fuzz Effect 207,890 52 *
Microphone Mixer Anatoly I. Shikhatov 216,724 26 *
Mono To Stereo Synthesizer oRbEq 100,114 18 *
One Tube Regenerative Radio NEW! 106,328 4 *
Op Amp Radio 346,900 80 *
Single Chip AM Radio NEW! 81,419 2 *
Single Chip FM Radio NEW! 135,472 1 *
Sound Level Meter 306,316 51 *
Stereo Tube Amplifier Weslee Kinsler 234,081 15 *
Tone Control 270,490 31
Transistor Organ 164,930 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 138,553 27 *
FM Telephone Bug 204,203 57
Phone Busy Indicator 186,105 24 *
Remote Telephone Ringer 94,406 3 *
Ringing Phone Light Flasher 183,567 34 *
Simple Phone Tap Derek Tombrello 332,136 98 *
Telephone Hold Button 99,092 10
Telephone Recorder 184,787 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.