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 10, 2026		 Digital Volume Control8
Sound Level Meter5
Yesterday
Wednesday, September 09, 2026		 LED Chaser86
12VDC To 120VAC Inverter50
Of All Time 12VDC To 120VAC Inverter1,568,946
FM Transmitter1,038,225

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 238,730 61 *
Car Alarm Arming Horn Beep Canceller bob 147,252 6 *
Wireless Auto Tachometer 356,458 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 170,311 29 *
Parallel (Printer) Port Interface 303,060 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 463,100 63 *
3 Channel Spectrum Analyzer 236,856 20
40W Fluorescent Lamp Inverter Bart Milnes 342,757 60 *
Adjustable Strobe Light 324,005 36
Black Light 299,232 29
Colour (Sound) Organ 306,358 36
Electronic Dice NEW! 202,423 10 *
Fantastic Atom Expander 214,335 25
Flash Slave Trigger 235,067 18 *
Infa-Red Remote Control 654,480 216 *
IR Remote Extender NEW! 145,764 3 *
IR Remote Jammer Carl 281,148 110 *
IR Remote Switch NEW! 169,933 9 *
LASER Transmitter/Receiver 433,268 92
LED Chaser 463,398 83 *
LED Metronome NEW! 111,870 3 *
LED Thermometer 218,451 22 *
Light/Dark Detector 317,998 90 *
Simple Colour Organ 148,902 11 *
Strobe Light 288,009 27 *
TRIAC Light Dimmer 570,239 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 375,968 122 *
Electromagnetic Levitator NEW! 156,269 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 943,594 214 *
AC Motor Speed Controller 410,638 29 *
Air Flow Detector 264,567 54 *
Digital Keypad Combination Lock 213,991 20
Low Voltage Alarm 242,380 58 *
Pine Racecar Victory Judge 113,617 1 *
Pulse Width Modulation DC Motor Control 671,817 94
Rain Detector 318,416 112 *
Simple Lie Detector 580,800 323
Simple Polarity Tester Dudley LeRoux 178,328 13 *
Simple Servo Controller 235,270 22 *
Simple Touch Switch NEW! 183,354 6 *
Simple Two Speed Contactor DC Motor Controller 218,749 21 *
Stepper Motor Controller 771,842 120 *
Time Delay Relay 571,254 88
Time Delay Relay II jawaharlal@excite.com 260,832 39 *
Touch Switch 303,653 51 *
Video Activated Relay 133,305 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 196,792 10 *
Water Detector With Sump/Bilge Pump Controller 165,512 18 *
Wire Loop Alarm Alex Meaden 217,689 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! 338,070 25 *
12VDC To 120VAC Inverter 1,568,946 691
6V to 12V Converter 545,904 121
Automatic 12V Lead Acid Battery Charger 956,853 248
Automatic Load Sensing Power Switch 180,640 16 *
Car Battery Charger 900,633 159 *
Dual Polarity Power Supply 387,128 84 *
Fixed Voltage Power Supply 324,711 52 *
High Current Power Supply 357,144 66 *
High Voltage High Current Power Supply 277,968 35 *
LASER Power Supply 310,884 28
Portable CD Player Adapter For Car 225,144 12 *
Power Supply 756,077 259 *
Solid State Tesla Coil NEW! 162,671 4
Solid State Tesla Coil/High Voltage Generator 464,609 51
Transformerless Power Supply 478,130 117 *
Voltage Inverter 359,655 51 *
Voltage Inverter II 217,111 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 600,080 182
3 Watt FM Transmitter Rae XL Tkacik 355,079 83 *
50 Watt Amplifier 524,918 74
8 Note Tune Player 152,549 12 *
8 Watt Audio Amp 392,049 67 *
Aircraft Radio Communications Receiver 296,225 50 *
Crystal Radio 175,342 53 *
Digital Volume Control 354,329 47 *
Electronic Stethoscope 338,120 142 *
FET Audio Mixer 358,196 41
FM Transmitter 1,038,225 420
Guitar Fuzz Effect 264,165 54 *
Microphone Mixer Anatoly I. Shikhatov 264,528 26 *
Mono To Stereo Synthesizer oRbEq 148,402 18 *
One Tube Regenerative Radio NEW! 166,606 4 *
Op Amp Radio 407,398 80 *
Single Chip AM Radio NEW! 112,942 4 *
Single Chip FM Radio NEW! 188,857 1 *
Sound Level Meter 356,774 51 *
Stereo Tube Amplifier Weslee Kinsler 283,418 15 *
Tone Control 325,222 31
Transistor Organ 214,551 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 174,819 27 *
FM Telephone Bug 246,362 57
Phone Busy Indicator 226,000 24 *
Remote Telephone Ringer 129,263 3 *
Ringing Phone Light Flasher 234,052 35 *
Simple Phone Tap Derek Tombrello 395,946 98 *
Telephone Hold Button 140,213 10
Telephone Recorder 228,381 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.