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, March 28, 2024
FM Transmitter22
12VDC To 120VAC Inverter20
Yesterday
Wednesday, March 27, 2024
12VDC To 120VAC Inverter47
Voltage Inverter31
Of All Time 12VDC To 120VAC Inverter1,530,541
FM Transmitter1,008,639

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 227,399 61 *
Car Alarm Arming Horn Beep Canceller bob 137,011 6 *
Wireless Auto Tachometer 343,512 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 160,319 29 *
Parallel (Printer) Port Interface 286,265 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 448,130 63 *
3 Channel Spectrum Analyzer 222,185 20
40W Fluorescent Lamp Inverter Bart Milnes 330,628 60 *
Adjustable Strobe Light 309,496 36
Black Light 281,081 29
Colour (Sound) Organ 291,127 36
Electronic Dice NEW! 189,643 10 *
Fantastic Atom Expander 203,460 25
Flash Slave Trigger 221,703 18 *
Infa-Red Remote Control 637,603 216 *
IR Remote Extender NEW! 133,204 3 *
IR Remote Jammer Carl 266,458 110 *
IR Remote Switch NEW! 158,118 9 *
LASER Transmitter/Receiver 416,780 92
LED Chaser 446,449 83 *
LED Metronome NEW! 99,883 3 *
LED Thermometer 207,225 22 *
Light/Dark Detector 306,617 90 *
Simple Colour Organ 138,042 11 *
Strobe Light 276,364 27 *
TRIAC Light Dimmer 553,197 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 359,829 122 *
Electromagnetic Levitator NEW! 144,934 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 922,744 214 *
AC Motor Speed Controller 391,838 29 *
Air Flow Detector 252,282 54 *
Digital Keypad Combination Lock 202,820 20
Low Voltage Alarm 229,722 58 *
Pine Racecar Victory Judge 103,198 1 *
Pulse Width Modulation DC Motor Control 655,354 94
Rain Detector 305,199 112 *
Simple Lie Detector 565,080 323
Simple Polarity Tester Dudley LeRoux 165,968 13 *
Simple Servo Controller 221,964 22 *
Simple Touch Switch NEW! 170,421 6 *
Simple Two Speed Contactor DC Motor Controller 205,767 21 *
Stepper Motor Controller 746,302 120 *
Time Delay Relay 556,126 88
Time Delay Relay II jawaharlal@excite.com 247,524 39 *
Touch Switch 290,238 51 *
Video Activated Relay 122,291 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 181,781 10 *
Water Detector With Sump/Bilge Pump Controller 153,324 18 *
Wire Loop Alarm Alex Meaden 206,293 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 316,490 25 *
12VDC To 120VAC Inverter 1,530,541 691
6V to 12V Converter 527,953 121
Automatic 12V Lead Acid Battery Charger 937,710 248
Automatic Load Sensing Power Switch 167,868 16 *
Car Battery Charger 883,733 159 *
Dual Polarity Power Supply 371,773 84 *
Fixed Voltage Power Supply 311,807 52 *
High Current Power Supply 339,474 66 *
High Voltage High Current Power Supply 264,573 35 *
LASER Power Supply 296,711 28
Portable CD Player Adapter For Car 212,994 12 *
Power Supply 738,995 259 *
Solid State Tesla Coil NEW! 146,944 4
Solid State Tesla Coil/High Voltage Generator 444,911 51
Transformerless Power Supply 463,682 117 *
Voltage Inverter 339,358 51 *
Voltage Inverter II 203,650 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 585,917 182
3 Watt FM Transmitter Rae XL Tkacik 335,854 83 *
50 Watt Amplifier 508,295 74
8 Note Tune Player 141,267 12 *
8 Watt Audio Amp 373,263 67 *
Aircraft Radio Communications Receiver 279,078 49 *
Crystal Radio 159,467 53 *
Digital Volume Control 338,919 47 *
Electronic Stethoscope 321,844 142 *
FET Audio Mixer 344,186 41
FM Transmitter 1,008,639 420
Guitar Fuzz Effect 248,156 54 *
Microphone Mixer Anatoly I. Shikhatov 251,241 26 *
Mono To Stereo Synthesizer oRbEq 134,431 18 *
One Tube Regenerative Radio NEW! 142,640 4 *
Op Amp Radio 389,392 80 *
Single Chip AM Radio NEW! 100,398 3 *
Single Chip FM Radio NEW! 173,209 1 *
Sound Level Meter 342,604 51 *
Stereo Tube Amplifier Weslee Kinsler 268,911 15 *
Tone Control 310,377 31
Transistor Organ 200,221 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 164,235 27 *
FM Telephone Bug 236,047 57
Phone Busy Indicator 214,602 24 *
Remote Telephone Ringer 118,948 3 *
Ringing Phone Light Flasher 218,766 35 *
Simple Phone Tap Derek Tombrello 384,270 98 *
Telephone Hold Button 129,722 10
Telephone Recorder 217,191 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.