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
Saturday, February 16, 2019
22 Watt Audio Amplifier17
Stepper Motor Controller11
Yesterday
Friday, February 15, 2019
Black Light75
LASER Power Supply65
Of All Time 12VDC To 120VAC Inverter1,428,745
FM Transmitter945,683

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 195,837 61 *
Car Alarm Arming Horn Beep Canceller bob 107,152 6 *
Wireless Auto Tachometer 303,857 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 136,363 29 *
Parallel (Printer) Port Interface 243,023 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 400,138 63 *
3 Channel Spectrum Analyzer 191,254 20
40W Fluorescent Lamp Inverter Bart Milnes 295,763 60 *
Adjustable Strobe Light 270,660 36
Black Light 232,213 29
Colour (Sound) Organ 253,523 36
Electronic Dice NEW! 156,153 10 *
Fantastic Atom Expander 168,027 25
Flash Slave Trigger 187,202 18 *
Infa-Red Remote Control 590,138 216 *
IR Remote Extender NEW! 97,006 2 *
IR Remote Jammer Carl 230,861 110 *
IR Remote Switch NEW! 127,026 9 *
LASER Transmitter/Receiver 370,573 92
LED Chaser 413,168 83 *
LED Metronome NEW! 83,382 3 *
LED Thermometer 180,890 22 *
Light/Dark Detector 279,019 90 *
Simple Colour Organ 115,453 10 *
Strobe Light 248,075 27 *
TRIAC Light Dimmer 461,430 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 318,440 122 *
Electromagnetic Levitator NEW! 118,078 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 869,078 214 *
AC Motor Speed Controller 347,946 29 *
Air Flow Detector 225,144 54 *
Digital Keypad Combination Lock 169,098 20
Low Voltage Alarm 199,099 58 *
Pine Racecar Victory Judge 79,724 1 *
Pulse Width Modulation DC Motor Control 615,673 93
Rain Detector 278,669 112 *
Simple Lie Detector 525,820 323
Simple Polarity Tester Dudley LeRoux 133,545 13 *
Simple Servo Controller 190,439 22 *
Simple Touch Switch NEW! 144,349 5 *
Simple Two Speed Contactor DC Motor Controller 178,941 21 *
Stepper Motor Controller 698,931 120 *
Time Delay Relay 520,120 88
Time Delay Relay II jawaharlal@excite.com 210,930 39 *
Touch Switch 261,718 51 *
Video Activated Relay 98,914 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 151,531 10 *
Water Detector With Sump/Bilge Pump Controller 124,464 18 *
Wire Loop Alarm Alex Meaden 181,266 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 276,251 25 *
12VDC To 120VAC Inverter 1,428,745 688
6V to 12V Converter 458,867 121
Automatic 12V Lead Acid Battery Charger 882,599 246
Automatic Load Sensing Power Switch 137,723 16 *
Car Battery Charger 835,927 159 *
Dual Polarity Power Supply 343,455 84 *
Fixed Voltage Power Supply 281,891 52 *
High Current Power Supply 300,494 65 *
High Voltage High Current Power Supply 225,402 35 *
LASER Power Supply 259,457 28
Portable CD Player Adapter For Car 183,578 12 *
Power Supply 695,892 259 *
Solid State Tesla Coil NEW! 122,237 4
Solid State Tesla Coil/High Voltage Generator 396,470 50
Transformerless Power Supply 423,922 117 *
Voltage Inverter 307,439 51 *
Voltage Inverter II 176,113 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 551,343 182
3 Watt FM Transmitter Rae XL Tkacik 300,626 82 *
50 Watt Amplifier 470,318 74
8 Note Tune Player 118,188 12 *
8 Watt Audio Amp 334,823 67 *
Aircraft Radio Communications Receiver 238,521 49 *
Crystal Radio 139,592 53 *
Digital Volume Control 300,951 47 *
Electronic Stethoscope 278,629 141 *
FET Audio Mixer 310,174 41
FM Transmitter 945,683 419
Guitar Fuzz Effect 211,706 52 *
Microphone Mixer Anatoly I. Shikhatov 219,266 26 *
Mono To Stereo Synthesizer oRbEq 103,383 18 *
One Tube Regenerative Radio NEW! 108,700 4 *
Op Amp Radio 349,469 80 *
Single Chip AM Radio NEW! 82,508 2 *
Single Chip FM Radio NEW! 138,851 1 *
Sound Level Meter 309,377 51 *
Stereo Tube Amplifier Weslee Kinsler 237,025 15 *
Tone Control 273,635 31
Transistor Organ 167,344 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 140,120 27 *
FM Telephone Bug 208,099 57
Phone Busy Indicator 188,465 24 *
Remote Telephone Ringer 95,850 3 *
Ringing Phone Light Flasher 185,587 34 *
Simple Phone Tap Derek Tombrello 334,635 98 *
Telephone Hold Button 102,070 10
Telephone Recorder 186,633 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.