Electronic Circuits

Home > Electronics > Electronic Circuits Buy Me A Coffee

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
Sunday, October 19, 2025		 12VDC To 120VAC Inverter19
FM Transmitter12
Yesterday
Saturday, October 18, 2025		 12VDC To 120VAC Inverter50
FM Transmitter37
Of All Time 12VDC To 120VAC Inverter1,554,544
FM Transmitter1,026,938

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 234,149 61 *
Car Alarm Arming Horn Beep Canceller bob 142,886 6 *
Wireless Auto Tachometer 351,098 58

Computer

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computer Controlled Frequency Counter/Logic Probe Richard van Wyk 166,223 29 *
Parallel (Printer) Port Interface 296,593 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 456,904 63 *
3 Channel Spectrum Analyzer 231,122 20
40W Fluorescent Lamp Inverter Bart Milnes 337,753 60 *
Adjustable Strobe Light 318,424 36
Black Light 292,468 29
Colour (Sound) Organ 300,132 36
Electronic Dice NEW! 197,019 10 *
Fantastic Atom Expander 209,685 25
Flash Slave Trigger 229,478 18 *
Infa-Red Remote Control 647,741 216 *
IR Remote Extender NEW! 140,567 3 *
IR Remote Jammer Carl 275,276 110 *
IR Remote Switch NEW! 164,929 9 *
LASER Transmitter/Receiver 427,196 92
LED Chaser 456,563 83 *
LED Metronome NEW! 106,738 3 *
LED Thermometer 213,965 22 *
Light/Dark Detector 313,313 90 *
Simple Colour Organ 144,265 11 *
Strobe Light 283,193 27 *
TRIAC Light Dimmer 563,123 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 369,330 122 *
Electromagnetic Levitator NEW! 151,608 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 934,773 214 *
AC Motor Speed Controller 403,784 29 *
Air Flow Detector 259,366 54 *
Digital Keypad Combination Lock 209,194 20
Low Voltage Alarm 237,095 58 *
Pine Racecar Victory Judge 109,173 1 *
Pulse Width Modulation DC Motor Control 665,414 94
Rain Detector 312,928 112 *
Simple Lie Detector 574,802 323
Simple Polarity Tester Dudley LeRoux 172,883 13 *
Simple Servo Controller 229,887 22 *
Simple Touch Switch NEW! 177,978 6 *
Simple Two Speed Contactor DC Motor Controller 213,304 21 *
Stepper Motor Controller 763,277 120 *
Time Delay Relay 565,232 88
Time Delay Relay II jawaharlal@excite.com 255,509 39 *
Touch Switch 298,284 51 *
Video Activated Relay 128,757 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 189,780 10 *
Water Detector With Sump/Bilge Pump Controller 160,273 18 *
Wire Loop Alarm Alex Meaden 212,992 27 *

Power Supply

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12V To 24V DC-DC Converter NEW! 329,348 25 *
12VDC To 120VAC Inverter 1,554,544 691
6V to 12V Converter 538,858 121
Automatic 12V Lead Acid Battery Charger 948,871 248
Automatic Load Sensing Power Switch 175,405 16 *
Car Battery Charger 894,143 159 *
Dual Polarity Power Supply 380,847 84 *
Fixed Voltage Power Supply 320,037 52 *
High Current Power Supply 350,809 66 *
High Voltage High Current Power Supply 272,704 35 *
LASER Power Supply 305,496 28
Portable CD Player Adapter For Car 219,975 12 *
Power Supply 749,712 259 *
Solid State Tesla Coil NEW! 156,183 4
Solid State Tesla Coil/High Voltage Generator 456,498 51
Transformerless Power Supply 472,614 117 *
Voltage Inverter 352,505 51 *
Voltage Inverter II 211,918 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 594,813 182
3 Watt FM Transmitter Rae XL Tkacik 348,149 83 *
50 Watt Amplifier 519,041 74
8 Note Tune Player 148,016 12 *
8 Watt Audio Amp 385,119 67 *
Aircraft Radio Communications Receiver 289,967 50 *
Crystal Radio 168,734 53 *
Digital Volume Control 348,592 47 *
Electronic Stethoscope 331,699 142 *
FET Audio Mixer 353,005 41
FM Transmitter 1,026,938 420
Guitar Fuzz Effect 257,637 54 *
Microphone Mixer Anatoly I. Shikhatov 259,430 26 *
Mono To Stereo Synthesizer oRbEq 142,967 18 *
One Tube Regenerative Radio NEW! 158,785 4 *
Op Amp Radio 401,147 80 *
Single Chip AM Radio NEW! 107,784 4 *
Single Chip FM Radio NEW! 182,563 1 *
Sound Level Meter 351,217 51 *
Stereo Tube Amplifier Weslee Kinsler 277,554 15 *
Tone Control 319,408 31
Transistor Organ 209,027 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 170,512 27 *
FM Telephone Bug 242,127 57
Phone Busy Indicator 221,317 24 *
Remote Telephone Ringer 124,940 3 *
Ringing Phone Light Flasher 228,077 35 *
Simple Phone Tap Derek Tombrello 391,416 98 *
Telephone Hold Button 136,193 10
Telephone Recorder 224,024 55 *

Back To Electronics Page | Mail Me | Search | Buy Me A Coffee

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.