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
Saturday, June 14, 2025		 One Tube Regenerative Radio96
Stepper Motor Controller86
Yesterday
Friday, June 13, 2025		 One Tube Regenerative Radio107
12VDC To 120VAC Inverter101
Of All Time 12VDC To 120VAC Inverter1,548,792
FM Transmitter1,022,345

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 232,176 61 *
Car Alarm Arming Horn Beep Canceller bob 141,297 6 *
Wireless Auto Tachometer 349,021 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 164,665 29 *
Parallel (Printer) Port Interface 293,724 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 454,563 63 *
3 Channel Spectrum Analyzer 228,790 20
40W Fluorescent Lamp Inverter Bart Milnes 335,684 60 *
Adjustable Strobe Light 315,980 36
Black Light 289,808 29
Colour (Sound) Organ 297,492 36
Electronic Dice NEW! 194,891 10 *
Fantastic Atom Expander 207,961 25
Flash Slave Trigger 227,287 18 *
Infa-Red Remote Control 644,690 216 *
IR Remote Extender NEW! 138,535 3 *
IR Remote Jammer Carl 273,008 110 *
IR Remote Switch NEW! 162,852 9 *
LASER Transmitter/Receiver 424,655 92
LED Chaser 453,635 83 *
LED Metronome NEW! 104,798 3 *
LED Thermometer 212,163 22 *
Light/Dark Detector 311,394 90 *
Simple Colour Organ 142,399 11 *
Strobe Light 281,282 27 *
TRIAC Light Dimmer 560,697 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 366,895 122 *
Electromagnetic Levitator NEW! 149,762 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 931,614 214 *
AC Motor Speed Controller 400,477 29 *
Air Flow Detector 257,409 54 *
Digital Keypad Combination Lock 207,295 20
Low Voltage Alarm 234,905 58 *
Pine Racecar Victory Judge 107,529 1 *
Pulse Width Modulation DC Motor Control 662,572 94
Rain Detector 310,922 112 *
Simple Lie Detector 572,049 323
Simple Polarity Tester Dudley LeRoux 170,913 13 *
Simple Servo Controller 227,635 22 *
Simple Touch Switch NEW! 175,752 6 *
Simple Two Speed Contactor DC Motor Controller 211,170 21 *
Stepper Motor Controller 759,083 120 *
Time Delay Relay 562,779 88
Time Delay Relay II jawaharlal@excite.com 253,408 39 *
Touch Switch 296,013 51 *
Video Activated Relay 126,950 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 187,517 10 *
Water Detector With Sump/Bilge Pump Controller 158,458 18 *
Wire Loop Alarm Alex Meaden 211,058 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! 325,555 25 *
12VDC To 120VAC Inverter 1,548,792 691
6V to 12V Converter 536,045 121
Automatic 12V Lead Acid Battery Charger 946,007 248
Automatic Load Sensing Power Switch 173,347 16 *
Car Battery Charger 891,234 159 *
Dual Polarity Power Supply 378,190 84 *
Fixed Voltage Power Supply 317,905 52 *
High Current Power Supply 347,937 66 *
High Voltage High Current Power Supply 270,457 35 *
LASER Power Supply 303,268 28
Portable CD Player Adapter For Car 217,994 12 *
Power Supply 747,229 259 *
Solid State Tesla Coil NEW! 153,496 4
Solid State Tesla Coil/High Voltage Generator 453,408 51
Transformerless Power Supply 470,302 117 *
Voltage Inverter 349,060 51 *
Voltage Inverter II 209,908 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 592,440 182
3 Watt FM Transmitter Rae XL Tkacik 344,640 83 *
50 Watt Amplifier 516,170 74
8 Note Tune Player 146,266 12 *
8 Watt Audio Amp 381,855 67 *
Aircraft Radio Communications Receiver 287,205 50 *
Crystal Radio 165,913 53 *
Digital Volume Control 346,148 47 *
Electronic Stethoscope 329,174 142 *
FET Audio Mixer 350,795 41
FM Transmitter 1,022,345 420
Guitar Fuzz Effect 255,057 54 *
Microphone Mixer Anatoly I. Shikhatov 257,228 26 *
Mono To Stereo Synthesizer oRbEq 140,770 18 *
One Tube Regenerative Radio NEW! 154,802 4 *
Op Amp Radio 398,310 80 *
Single Chip AM Radio NEW! 105,841 4 *
Single Chip FM Radio NEW! 179,921 1 *
Sound Level Meter 348,948 51 *
Stereo Tube Amplifier Weslee Kinsler 275,081 15 *
Tone Control 316,857 31
Transistor Organ 206,800 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 168,779 27 *
FM Telephone Bug 240,364 57
Phone Busy Indicator 219,430 24 *
Remote Telephone Ringer 123,263 3 *
Ringing Phone Light Flasher 225,439 35 *
Simple Phone Tap Derek Tombrello 389,396 98 *
Telephone Hold Button 134,383 10
Telephone Recorder 222,223 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.