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, September 30, 2023
6V to 12V Converter22
12VDC To 120VAC Inverter19
Yesterday
Friday, September 29, 2023
12VDC To 120VAC Inverter43
12V To 24V DC-DC Converter29
Of All Time 12VDC To 120VAC Inverter1,522,677
FM Transmitter1,004,189

Auto

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Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 225,978 61 *
Car Alarm Arming Horn Beep Canceller bob 135,804 6 *
Wireless Auto Tachometer 341,891 58

Computer

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Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 159,170 29 *
Parallel (Printer) Port Interface 284,261 71

Light/Laser

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Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 446,134 63 *
3 Channel Spectrum Analyzer 220,276 20
40W Fluorescent Lamp Inverter Bart Milnes 329,068 60 *
Adjustable Strobe Light 307,668 36
Black Light 278,313 29
Colour (Sound) Organ 289,101 36
Electronic Dice NEW! 188,028 10 *
Fantastic Atom Expander 202,102 25
Flash Slave Trigger 220,284 18 *
Infa-Red Remote Control 635,695 216 *
IR Remote Extender NEW! 131,499 2 *
IR Remote Jammer Carl 264,427 110 *
IR Remote Switch NEW! 156,741 9 *
LASER Transmitter/Receiver 413,829 92
LED Chaser 444,289 83 *
LED Metronome NEW! 98,547 3 *
LED Thermometer 205,750 22 *
Light/Dark Detector 305,201 90 *
Simple Colour Organ 136,814 11 *
Strobe Light 274,287 27 *
TRIAC Light Dimmer 550,268 55

Major Projects

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Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 358,190 122 *
Electromagnetic Levitator NEW! 143,446 15 *

Other

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Circuit Author Views Rank Comments Marker
7 Segment LED Counter 920,369 214 *
AC Motor Speed Controller 388,687 29 *
Air Flow Detector 250,812 54 *
Digital Keypad Combination Lock 201,440 20
Low Voltage Alarm 228,211 58 *
Pine Racecar Victory Judge 102,111 1 *
Pulse Width Modulation DC Motor Control 653,265 94
Rain Detector 303,620 112 *
Simple Lie Detector 562,562 323
Simple Polarity Tester Dudley LeRoux 164,518 13 *
Simple Servo Controller 220,307 22 *
Simple Touch Switch NEW! 168,741 6 *
Simple Two Speed Contactor DC Motor Controller 203,993 21 *
Stepper Motor Controller 743,284 120 *
Time Delay Relay 554,159 88
Time Delay Relay II jawaharlal@excite.com 245,576 39 *
Touch Switch 288,560 51 *
Video Activated Relay 121,020 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 179,606 10 *
Water Detector With Sump/Bilge Pump Controller 151,908 18 *
Wire Loop Alarm Alex Meaden 204,933 27 *

Power Supply

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Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 313,437 25 *
12VDC To 120VAC Inverter 1,522,677 691
6V to 12V Converter 525,250 121
Automatic 12V Lead Acid Battery Charger 934,881 248
Automatic Load Sensing Power Switch 166,287 16 *
Car Battery Charger 881,299 159 *
Dual Polarity Power Supply 369,702 84 *
Fixed Voltage Power Supply 309,996 52 *
High Current Power Supply 336,405 66 *
High Voltage High Current Power Supply 251,647 35 *
LASER Power Supply 294,624 28
Portable CD Player Adapter For Car 211,413 12 *
Power Supply 736,710 259 *
Solid State Tesla Coil NEW! 144,712 4
Solid State Tesla Coil/High Voltage Generator 442,139 51
Transformerless Power Supply 461,694 117 *
Voltage Inverter 336,433 51 *
Voltage Inverter II 201,250 19 *

Sound/Radio

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Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 583,846 182
3 Watt FM Transmitter Rae XL Tkacik 333,457 83 *
50 Watt Amplifier 506,008 74
8 Note Tune Player 139,908 12 *
8 Watt Audio Amp 370,804 67 *
Aircraft Radio Communications Receiver 276,562 49 *
Crystal Radio 157,743 53 *
Digital Volume Control 337,043 47 *
Electronic Stethoscope 319,410 142 *
FET Audio Mixer 342,116 41
FM Transmitter 1,004,189 420
Guitar Fuzz Effect 245,609 54 *
Microphone Mixer Anatoly I. Shikhatov 249,307 26 *
Mono To Stereo Synthesizer oRbEq 132,393 18 *
One Tube Regenerative Radio NEW! 138,236 4 *
Op Amp Radio 386,167 80 *
Single Chip AM Radio NEW! 98,766 3 *
Single Chip FM Radio NEW! 170,971 1 *
Sound Level Meter 340,550 51 *
Stereo Tube Amplifier Weslee Kinsler 267,046 15 *
Tone Control 308,666 31
Transistor Organ 198,183 28

Telephone

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Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 162,934 27 *
FM Telephone Bug 234,886 57
Phone Busy Indicator 213,335 24 *
Remote Telephone Ringer 117,733 3 *
Ringing Phone Light Flasher 216,442 35 *
Simple Phone Tap Derek Tombrello 382,765 98 *
Telephone Hold Button 128,423 10
Telephone Recorder 215,771 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.