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
Tuesday, May 06, 2025		 Stepper Motor Controller14
Voltage Inverter12
Yesterday
Monday, May 05, 2025		 12VDC To 120VAC Inverter52
7 Segment LED Counter37
Of All Time 12VDC To 120VAC Inverter1,546,258
FM Transmitter1,020,245

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 230,928 61 *
Car Alarm Arming Horn Beep Canceller bob 140,153 6 *
Wireless Auto Tachometer 347,709 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 163,509 29 *
Parallel (Printer) Port Interface 292,363 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 453,230 63 *
3 Channel Spectrum Analyzer 227,398 20
40W Fluorescent Lamp Inverter Bart Milnes 334,449 60 *
Adjustable Strobe Light 314,443 36
Black Light 287,914 29
Colour (Sound) Organ 296,109 36
Electronic Dice NEW! 193,594 10 *
Fantastic Atom Expander 206,820 25
Flash Slave Trigger 226,042 18 *
Infa-Red Remote Control 642,953 216 *
IR Remote Extender NEW! 137,312 3 *
IR Remote Jammer Carl 271,674 110 *
IR Remote Switch NEW! 161,604 9 *
LASER Transmitter/Receiver 423,147 92
LED Chaser 452,176 83 *
LED Metronome NEW! 103,603 3 *
LED Thermometer 210,985 22 *
Light/Dark Detector 310,211 90 *
Simple Colour Organ 141,210 11 *
Strobe Light 280,075 27 *
TRIAC Light Dimmer 559,332 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 365,582 122 *
Electromagnetic Levitator NEW! 148,541 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 929,896 214 *
AC Motor Speed Controller 398,969 29 *
Air Flow Detector 256,272 54 *
Digital Keypad Combination Lock 206,192 20
Low Voltage Alarm 233,698 58 *
Pine Racecar Victory Judge 106,414 1 *
Pulse Width Modulation DC Motor Control 661,190 94
Rain Detector 309,694 112 *
Simple Lie Detector 570,663 323
Simple Polarity Tester Dudley LeRoux 169,727 13 *
Simple Servo Controller 226,335 22 *
Simple Touch Switch NEW! 174,488 6 *
Simple Two Speed Contactor DC Motor Controller 209,825 21 *
Stepper Motor Controller 757,033 120 *
Time Delay Relay 561,443 88
Time Delay Relay II jawaharlal@excite.com 252,178 39 *
Touch Switch 294,765 51 *
Video Activated Relay 125,814 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 186,327 10 *
Water Detector With Sump/Bilge Pump Controller 157,355 18 *
Wire Loop Alarm Alex Meaden 209,873 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! 324,031 25 *
12VDC To 120VAC Inverter 1,546,258 691
6V to 12V Converter 534,670 121
Automatic 12V Lead Acid Battery Charger 944,462 248
Automatic Load Sensing Power Switch 172,142 16 *
Car Battery Charger 889,794 159 *
Dual Polarity Power Supply 376,842 84 *
Fixed Voltage Power Supply 316,694 52 *
High Current Power Supply 346,513 66 *
High Voltage High Current Power Supply 269,188 35 *
LASER Power Supply 302,006 28
Portable CD Player Adapter For Car 216,809 12 *
Power Supply 745,844 259 *
Solid State Tesla Coil NEW! 152,151 4
Solid State Tesla Coil/High Voltage Generator 451,804 51
Transformerless Power Supply 468,984 117 *
Voltage Inverter 347,500 51 *
Voltage Inverter II 208,705 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 591,131 182
3 Watt FM Transmitter Rae XL Tkacik 343,139 83 *
50 Watt Amplifier 514,736 74
8 Note Tune Player 145,067 12 *
8 Watt Audio Amp 380,351 67 *
Aircraft Radio Communications Receiver 285,710 50 *
Crystal Radio 164,543 53 *
Digital Volume Control 344,376 47 *
Electronic Stethoscope 327,791 142 *
FET Audio Mixer 349,442 41
FM Transmitter 1,020,245 420
Guitar Fuzz Effect 253,640 54 *
Microphone Mixer Anatoly I. Shikhatov 255,965 26 *
Mono To Stereo Synthesizer oRbEq 139,404 18 *
One Tube Regenerative Radio NEW! 152,858 4 *
Op Amp Radio 396,773 80 *
Single Chip AM Radio NEW! 104,615 4 *
Single Chip FM Radio NEW! 178,600 1 *
Sound Level Meter 347,592 51 *
Stereo Tube Amplifier Weslee Kinsler 273,822 15 *
Tone Control 315,483 31
Transistor Organ 205,500 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 167,651 27 *
FM Telephone Bug 239,226 57
Phone Busy Indicator 218,231 24 *
Remote Telephone Ringer 122,094 3 *
Ringing Phone Light Flasher 224,137 35 *
Simple Phone Tap Derek Tombrello 388,205 98 *
Telephone Hold Button 133,199 10
Telephone Recorder 221,055 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.