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, February 21, 2019
Automatic Headlight Brightness Switch68
Simple Servo Controller56
Yesterday
Wednesday, February 20, 2019
12VDC To 120VAC Inverter94
7 Segment LED Counter68
Of All Time 12VDC To 120VAC Inverter1,429,178
FM Transmitter946,043

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 196,023 61 *
Car Alarm Arming Horn Beep Canceller bob 107,294 6 *
Wireless Auto Tachometer 304,119 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 136,481 29 *
Parallel (Printer) Port Interface 243,356 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 400,362 63 *
3 Channel Spectrum Analyzer 191,398 20
40W Fluorescent Lamp Inverter Bart Milnes 295,925 60 *
Adjustable Strobe Light 270,841 36
Black Light 232,412 29
Colour (Sound) Organ 253,680 36
Electronic Dice NEW! 156,310 10 *
Fantastic Atom Expander 168,193 25
Flash Slave Trigger 187,367 18 *
Infa-Red Remote Control 591,876 216 *
IR Remote Extender NEW! 97,160 2 *
IR Remote Jammer Carl 231,009 110 *
IR Remote Switch NEW! 127,174 9 *
LASER Transmitter/Receiver 370,766 92
LED Chaser 413,296 83 *
LED Metronome NEW! 83,433 3 *
LED Thermometer 181,007 22 *
Light/Dark Detector 279,111 90 *
Simple Colour Organ 115,553 10 *
Strobe Light 248,173 27 *
TRIAC Light Dimmer 461,631 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 318,648 122 *
Electromagnetic Levitator NEW! 118,206 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 869,466 214 *
AC Motor Speed Controller 348,226 29 *
Air Flow Detector 225,284 54 *
Digital Keypad Combination Lock 169,254 20
Low Voltage Alarm 199,221 58 *
Pine Racecar Victory Judge 79,870 1 *
Pulse Width Modulation DC Motor Control 615,829 93
Rain Detector 278,801 112 *
Simple Lie Detector 526,080 323
Simple Polarity Tester Dudley LeRoux 133,699 13 *
Simple Servo Controller 190,765 22 *
Simple Touch Switch NEW! 144,480 5 *
Simple Two Speed Contactor DC Motor Controller 179,053 21 *
Stepper Motor Controller 699,157 120 *
Time Delay Relay 520,312 88
Time Delay Relay II jawaharlal@excite.com 211,091 39 *
Touch Switch 261,832 51 *
Video Activated Relay 99,021 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 151,674 10 *
Water Detector With Sump/Bilge Pump Controller 124,566 18 *
Wire Loop Alarm Alex Meaden 181,372 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 276,585 25 *
12VDC To 120VAC Inverter 1,429,178 688
6V to 12V Converter 459,167 121
Automatic 12V Lead Acid Battery Charger 882,925 246
Automatic Load Sensing Power Switch 137,840 16 *
Car Battery Charger 836,256 159 *
Dual Polarity Power Supply 343,550 84 *
Fixed Voltage Power Supply 282,018 52 *
High Current Power Supply 300,741 65 *
High Voltage High Current Power Supply 225,513 35 *
LASER Power Supply 259,792 28
Portable CD Player Adapter For Car 183,724 12 *
Power Supply 696,194 259 *
Solid State Tesla Coil NEW! 122,310 4
Solid State Tesla Coil/High Voltage Generator 396,815 50
Transformerless Power Supply 424,107 117 *
Voltage Inverter 307,533 51 *
Voltage Inverter II 176,203 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 551,506 182
3 Watt FM Transmitter Rae XL Tkacik 300,756 82 *
50 Watt Amplifier 470,615 74
8 Note Tune Player 118,272 12 *
8 Watt Audio Amp 335,087 67 *
Aircraft Radio Communications Receiver 238,794 49 *
Crystal Radio 139,755 53 *
Digital Volume Control 301,153 47 *
Electronic Stethoscope 278,800 141 *
FET Audio Mixer 310,336 41
FM Transmitter 946,043 419
Guitar Fuzz Effect 212,014 52 *
Microphone Mixer Anatoly I. Shikhatov 219,455 26 *
Mono To Stereo Synthesizer oRbEq 103,607 18 *
One Tube Regenerative Radio NEW! 108,907 4 *
Op Amp Radio 349,620 80 *
Single Chip AM Radio NEW! 82,567 2 *
Single Chip FM Radio NEW! 139,075 1 *
Sound Level Meter 309,606 51 *
Stereo Tube Amplifier Weslee Kinsler 237,267 15 *
Tone Control 273,868 31
Transistor Organ 167,520 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 140,222 27 *
FM Telephone Bug 208,435 57
Phone Busy Indicator 188,663 24 *
Remote Telephone Ringer 95,950 3 *
Ringing Phone Light Flasher 185,712 34 *
Simple Phone Tap Derek Tombrello 334,849 98 *
Telephone Hold Button 102,304 10
Telephone Recorder 186,774 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.