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
Monday, September 09, 2024		 3 Watt FM Transmitter18
High Current Power Supply17
Yesterday
Sunday, September 08, 2024		 12VDC To 120VAC Inverter34
Op Amp Radio34
Of All Time 12VDC To 120VAC Inverter1,536,900
FM Transmitter1,013,858

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 228,733 61 *
Car Alarm Arming Horn Beep Canceller bob 138,236 6 *
Wireless Auto Tachometer 345,127 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 161,511 29 *
Parallel (Printer) Port Interface 288,980 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 450,142 63 *
3 Channel Spectrum Analyzer 224,253 20
40W Fluorescent Lamp Inverter Bart Milnes 332,017 60 *
Adjustable Strobe Light 311,365 36
Black Light 283,682 29
Colour (Sound) Organ 293,039 36
Electronic Dice NEW! 191,119 10 *
Fantastic Atom Expander 204,807 25
Flash Slave Trigger 223,444 18 *
Infa-Red Remote Control 639,729 216 *
IR Remote Extender NEW! 134,729 3 *
IR Remote Jammer Carl 268,550 110 *
IR Remote Switch NEW! 159,413 9 *
LASER Transmitter/Receiver 419,681 92
LED Chaser 448,604 83 *
LED Metronome NEW! 101,363 3 *
LED Thermometer 208,714 22 *
Light/Dark Detector 307,928 90 *
Simple Colour Organ 139,160 11 *
Strobe Light 277,668 27 *
TRIAC Light Dimmer 555,797 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 361,834 122 *
Electromagnetic Levitator NEW! 146,236 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 925,423 214 *
AC Motor Speed Controller 394,615 29 *
Air Flow Detector 253,857 54 *
Digital Keypad Combination Lock 204,027 20
Low Voltage Alarm 231,321 58 *
Pine Racecar Victory Judge 104,398 1 *
Pulse Width Modulation DC Motor Control 657,652 94
Rain Detector 306,906 112 *
Simple Lie Detector 567,286 323
Simple Polarity Tester Dudley LeRoux 167,475 13 *
Simple Servo Controller 223,619 22 *
Simple Touch Switch NEW! 171,969 6 *
Simple Two Speed Contactor DC Motor Controller 207,261 21 *
Stepper Motor Controller 750,247 120 *
Time Delay Relay 558,170 88
Time Delay Relay II jawaharlal@excite.com 249,521 39 *
Touch Switch 291,963 51 *
Video Activated Relay 123,714 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 183,723 10 *
Water Detector With Sump/Bilge Pump Controller 154,993 18 *
Wire Loop Alarm Alex Meaden 207,572 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 319,334 25 *
12VDC To 120VAC Inverter 1,536,900 691
6V to 12V Converter 530,751 121
Automatic 12V Lead Acid Battery Charger 940,261 248
Automatic Load Sensing Power Switch 169,689 16 *
Car Battery Charger 886,153 159 *
Dual Polarity Power Supply 373,776 84 *
Fixed Voltage Power Supply 313,706 52 *
High Current Power Supply 342,173 66 *
High Voltage High Current Power Supply 266,374 35 *
LASER Power Supply 298,793 28
Portable CD Player Adapter For Car 214,338 12 *
Power Supply 742,263 259 *
Solid State Tesla Coil NEW! 148,929 4
Solid State Tesla Coil/High Voltage Generator 447,613 51
Transformerless Power Supply 465,980 117 *
Voltage Inverter 342,673 51 *
Voltage Inverter II 205,782 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 588,080 182
3 Watt FM Transmitter Rae XL Tkacik 338,725 83 *
50 Watt Amplifier 510,898 74
8 Note Tune Player 142,758 12 *
8 Watt Audio Amp 376,399 67 *
Aircraft Radio Communications Receiver 281,809 49 *
Crystal Radio 161,253 53 *
Digital Volume Control 341,244 47 *
Electronic Stethoscope 324,196 142 *
FET Audio Mixer 346,126 41
FM Transmitter 1,013,858 420
Guitar Fuzz Effect 250,247 54 *
Microphone Mixer Anatoly I. Shikhatov 253,108 26 *
Mono To Stereo Synthesizer oRbEq 136,471 18 *
One Tube Regenerative Radio NEW! 146,128 4 *
Op Amp Radio 392,507 80 *
Single Chip AM Radio NEW! 102,105 3 *
Single Chip FM Radio NEW! 175,211 1 *
Sound Level Meter 344,501 51 *
Stereo Tube Amplifier Weslee Kinsler 270,855 15 *
Tone Control 312,430 31
Transistor Organ 202,299 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 165,576 27 *
FM Telephone Bug 237,168 57
Phone Busy Indicator 215,925 24 *
Remote Telephone Ringer 120,178 3 *
Ringing Phone Light Flasher 221,037 35 *
Simple Phone Tap Derek Tombrello 385,764 98 *
Telephone Hold Button 131,044 10
Telephone Recorder 218,689 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.