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
Thursday, September 18, 2025		 12V To 24V DC-DC Converter30
12VDC To 120VAC Inverter27
Yesterday
Wednesday, September 17, 2025		 12VDC To 120VAC Inverter53
Stepper Motor Controller47
Of All Time 12VDC To 120VAC Inverter1,553,209
FM Transmitter1,025,811

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 233,702 61 *
Car Alarm Arming Horn Beep Canceller bob 142,516 6 *
Wireless Auto Tachometer 350,595 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 165,847 29 *
Parallel (Printer) Port Interface 295,785 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 456,329 63 *
3 Channel Spectrum Analyzer 230,540 20
40W Fluorescent Lamp Inverter Bart Milnes 337,255 60 *
Adjustable Strobe Light 317,871 36
Black Light 291,840 29
Colour (Sound) Organ 299,523 36
Electronic Dice NEW! 196,480 10 *
Fantastic Atom Expander 209,256 25
Flash Slave Trigger 228,970 18 *
Infa-Red Remote Control 647,080 216 *
IR Remote Extender NEW! 140,073 3 *
IR Remote Jammer Carl 274,717 110 *
IR Remote Switch NEW! 164,434 9 *
LASER Transmitter/Receiver 426,651 92
LED Chaser 455,733 83 *
LED Metronome NEW! 106,276 3 *
LED Thermometer 213,526 22 *
Light/Dark Detector 312,831 90 *
Simple Colour Organ 143,809 11 *
Strobe Light 282,741 27 *
TRIAC Light Dimmer 562,556 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 368,629 122 *
Electromagnetic Levitator NEW! 151,166 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 933,982 214 *
AC Motor Speed Controller 402,939 29 *
Air Flow Detector 258,934 54 *
Digital Keypad Combination Lock 208,742 20
Low Voltage Alarm 236,584 58 *
Pine Racecar Victory Judge 108,765 1 *
Pulse Width Modulation DC Motor Control 664,801 94
Rain Detector 312,465 112 *
Simple Lie Detector 574,079 323
Simple Polarity Tester Dudley LeRoux 172,385 13 *
Simple Servo Controller 229,358 22 *
Simple Touch Switch NEW! 177,416 6 *
Simple Two Speed Contactor DC Motor Controller 212,791 21 *
Stepper Motor Controller 762,268 120 *
Time Delay Relay 564,650 88
Time Delay Relay II jawaharlal@excite.com 255,000 39 *
Touch Switch 297,766 51 *
Video Activated Relay 128,321 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 189,226 10 *
Water Detector With Sump/Bilge Pump Controller 159,842 18 *
Wire Loop Alarm Alex Meaden 212,531 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! 328,102 25 *
12VDC To 120VAC Inverter 1,553,209 691
6V to 12V Converter 538,194 121
Automatic 12V Lead Acid Battery Charger 948,188 248
Automatic Load Sensing Power Switch 174,917 16 *
Car Battery Charger 893,424 159 *
Dual Polarity Power Supply 380,215 84 *
Fixed Voltage Power Supply 319,576 52 *
High Current Power Supply 350,161 66 *
High Voltage High Current Power Supply 272,188 35 *
LASER Power Supply 305,011 28
Portable CD Player Adapter For Car 219,523 12 *
Power Supply 749,117 259 *
Solid State Tesla Coil NEW! 155,503 4
Solid State Tesla Coil/High Voltage Generator 455,789 51
Transformerless Power Supply 472,064 117 *
Voltage Inverter 351,723 51 *
Voltage Inverter II 211,438 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 594,272 182
3 Watt FM Transmitter Rae XL Tkacik 347,418 83 *
50 Watt Amplifier 518,403 74
8 Note Tune Player 147,599 12 *
8 Watt Audio Amp 384,341 67 *
Aircraft Radio Communications Receiver 289,337 50 *
Crystal Radio 168,017 53 *
Digital Volume Control 348,039 47 *
Electronic Stethoscope 331,077 142 *
FET Audio Mixer 352,504 41
FM Transmitter 1,025,811 420
Guitar Fuzz Effect 256,990 54 *
Microphone Mixer Anatoly I. Shikhatov 258,855 26 *
Mono To Stereo Synthesizer oRbEq 142,421 18 *
One Tube Regenerative Radio NEW! 157,824 4 *
Op Amp Radio 400,470 80 *
Single Chip AM Radio NEW! 107,316 4 *
Single Chip FM Radio NEW! 181,852 1 *
Sound Level Meter 350,660 51 *
Stereo Tube Amplifier Weslee Kinsler 276,883 15 *
Tone Control 318,764 31
Transistor Organ 208,459 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 170,093 27 *
FM Telephone Bug 241,685 57
Phone Busy Indicator 220,870 24 *
Remote Telephone Ringer 124,526 3 *
Ringing Phone Light Flasher 227,415 35 *
Simple Phone Tap Derek Tombrello 390,931 98 *
Telephone Hold Button 135,802 10
Telephone Recorder 223,576 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.