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
Friday, March 29, 2024
FM Transmitter11
Voltage Inverter10
Yesterday
Thursday, March 28, 2024
FM Transmitter40
12VDC To 120VAC Inverter36
Of All Time 12VDC To 120VAC Inverter1,530,561
FM Transmitter1,008,669

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,409 61 *
Car Alarm Arming Horn Beep Canceller bob 137,013 6 *
Wireless Auto Tachometer 343,517 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,321 29 *
Parallel (Printer) Port Interface 286,270 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,134 63 *
3 Channel Spectrum Analyzer 222,188 20
40W Fluorescent Lamp Inverter Bart Milnes 330,632 60 *
Adjustable Strobe Light 309,500 36
Black Light 281,091 29
Colour (Sound) Organ 291,140 36
Electronic Dice NEW! 189,651 10 *
Fantastic Atom Expander 203,465 25
Flash Slave Trigger 221,707 18 *
Infa-Red Remote Control 637,609 216 *
IR Remote Extender NEW! 133,210 3 *
IR Remote Jammer Carl 266,468 110 *
IR Remote Switch NEW! 158,122 9 *
LASER Transmitter/Receiver 416,793 92
LED Chaser 446,468 83 *
LED Metronome NEW! 99,886 3 *
LED Thermometer 207,234 22 *
Light/Dark Detector 306,623 90 *
Simple Colour Organ 138,050 11 *
Strobe Light 276,366 27 *
TRIAC Light Dimmer 553,208 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,834 122 *
Electromagnetic Levitator NEW! 144,937 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,751 214 *
AC Motor Speed Controller 391,844 29 *
Air Flow Detector 252,287 54 *
Digital Keypad Combination Lock 202,825 20
Low Voltage Alarm 229,726 58 *
Pine Racecar Victory Judge 103,201 1 *
Pulse Width Modulation DC Motor Control 655,361 94
Rain Detector 305,209 112 *
Simple Lie Detector 565,095 323
Simple Polarity Tester Dudley LeRoux 165,973 13 *
Simple Servo Controller 221,970 22 *
Simple Touch Switch NEW! 170,424 6 *
Simple Two Speed Contactor DC Motor Controller 205,772 21 *
Stepper Motor Controller 746,309 120 *
Time Delay Relay 556,131 88
Time Delay Relay II jawaharlal@excite.com 247,527 39 *
Touch Switch 290,239 51 *
Video Activated Relay 122,300 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,791 10 *
Water Detector With Sump/Bilge Pump Controller 153,329 18 *
Wire Loop Alarm Alex Meaden 206,298 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,501 25 *
12VDC To 120VAC Inverter 1,530,561 691
6V to 12V Converter 527,967 121
Automatic 12V Lead Acid Battery Charger 937,723 248
Automatic Load Sensing Power Switch 167,877 16 *
Car Battery Charger 883,741 159 *
Dual Polarity Power Supply 371,784 84 *
Fixed Voltage Power Supply 311,812 52 *
High Current Power Supply 339,490 66 *
High Voltage High Current Power Supply 264,583 35 *
LASER Power Supply 296,720 28
Portable CD Player Adapter For Car 212,996 12 *
Power Supply 739,004 259 *
Solid State Tesla Coil NEW! 146,950 4
Solid State Tesla Coil/High Voltage Generator 444,919 51
Transformerless Power Supply 463,688 117 *
Voltage Inverter 339,383 51 *
Voltage Inverter II 203,665 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,929 182
3 Watt FM Transmitter Rae XL Tkacik 335,859 83 *
50 Watt Amplifier 508,301 74
8 Note Tune Player 141,269 12 *
8 Watt Audio Amp 373,276 67 *
Aircraft Radio Communications Receiver 279,092 49 *
Crystal Radio 159,475 53 *
Digital Volume Control 338,921 47 *
Electronic Stethoscope 321,848 142 *
FET Audio Mixer 344,187 41
FM Transmitter 1,008,669 420
Guitar Fuzz Effect 248,175 54 *
Microphone Mixer Anatoly I. Shikhatov 251,242 26 *
Mono To Stereo Synthesizer oRbEq 134,439 18 *
One Tube Regenerative Radio NEW! 142,646 4 *
Op Amp Radio 389,405 80 *
Single Chip AM Radio NEW! 100,401 3 *
Single Chip FM Radio NEW! 173,213 1 *
Sound Level Meter 342,619 51 *
Stereo Tube Amplifier Weslee Kinsler 268,914 15 *
Tone Control 310,390 31
Transistor Organ 200,233 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,239 27 *
FM Telephone Bug 236,049 57
Phone Busy Indicator 214,607 24 *
Remote Telephone Ringer 118,955 3 *
Ringing Phone Light Flasher 218,772 35 *
Simple Phone Tap Derek Tombrello 384,279 98 *
Telephone Hold Button 129,725 10
Telephone Recorder 217,197 55 *


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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.