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
Monday, June 16, 2025		 Stepper Motor Controller35
FM Transmitter30
Yesterday
Sunday, June 15, 2025		 Stepper Motor Controller85
12VDC To 120VAC Inverter83
Of All Time 12VDC To 120VAC Inverter1,548,931
FM Transmitter1,022,475

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 232,262 61 *
Car Alarm Arming Horn Beep Canceller bob 141,384 6 *
Wireless Auto Tachometer 349,119 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 164,740 29 *
Parallel (Printer) Port Interface 293,819 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 454,667 63 *
3 Channel Spectrum Analyzer 228,881 20
40W Fluorescent Lamp Inverter Bart Milnes 335,767 60 *
Adjustable Strobe Light 316,077 36
Black Light 289,943 29
Colour (Sound) Organ 297,589 36
Electronic Dice NEW! 194,983 10 *
Fantastic Atom Expander 208,047 25
Flash Slave Trigger 227,386 18 *
Infa-Red Remote Control 644,797 216 *
IR Remote Extender NEW! 138,611 3 *
IR Remote Jammer Carl 273,088 110 *
IR Remote Switch NEW! 162,939 9 *
LASER Transmitter/Receiver 424,742 92
LED Chaser 453,738 83 *
LED Metronome NEW! 104,882 3 *
LED Thermometer 212,240 22 *
Light/Dark Detector 311,474 90 *
Simple Colour Organ 142,489 11 *
Strobe Light 281,368 27 *
TRIAC Light Dimmer 560,790 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 366,983 122 *
Electromagnetic Levitator NEW! 149,846 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 931,738 214 *
AC Motor Speed Controller 400,572 29 *
Air Flow Detector 257,484 54 *
Digital Keypad Combination Lock 207,372 20
Low Voltage Alarm 234,992 58 *
Pine Racecar Victory Judge 107,602 1 *
Pulse Width Modulation DC Motor Control 662,672 94
Rain Detector 311,006 112 *
Simple Lie Detector 572,147 323
Simple Polarity Tester Dudley LeRoux 170,993 13 *
Simple Servo Controller 227,719 22 *
Simple Touch Switch NEW! 175,844 6 *
Simple Two Speed Contactor DC Motor Controller 211,257 21 *
Stepper Motor Controller 759,238 120 *
Time Delay Relay 562,864 88
Time Delay Relay II jawaharlal@excite.com 253,485 39 *
Touch Switch 296,099 51 *
Video Activated Relay 127,019 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 187,602 10 *
Water Detector With Sump/Bilge Pump Controller 158,539 18 *
Wire Loop Alarm Alex Meaden 211,137 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! 325,643 25 *
12VDC To 120VAC Inverter 1,548,931 691
6V to 12V Converter 536,138 121
Automatic 12V Lead Acid Battery Charger 946,104 248
Automatic Load Sensing Power Switch 173,420 16 *
Car Battery Charger 891,331 159 *
Dual Polarity Power Supply 378,272 84 *
Fixed Voltage Power Supply 317,985 52 *
High Current Power Supply 348,031 66 *
High Voltage High Current Power Supply 270,551 35 *
LASER Power Supply 303,338 28
Portable CD Player Adapter For Car 218,074 12 *
Power Supply 747,317 259 *
Solid State Tesla Coil NEW! 153,579 4
Solid State Tesla Coil/High Voltage Generator 453,503 51
Transformerless Power Supply 470,387 117 *
Voltage Inverter 349,165 51 *
Voltage Inverter II 209,989 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 592,520 182
3 Watt FM Transmitter Rae XL Tkacik 344,732 83 *
50 Watt Amplifier 516,270 74
8 Note Tune Player 146,353 12 *
8 Watt Audio Amp 381,954 67 *
Aircraft Radio Communications Receiver 287,303 50 *
Crystal Radio 166,004 53 *
Digital Volume Control 346,245 47 *
Electronic Stethoscope 329,262 142 *
FET Audio Mixer 350,879 41
FM Transmitter 1,022,475 420
Guitar Fuzz Effect 255,133 54 *
Microphone Mixer Anatoly I. Shikhatov 257,302 26 *
Mono To Stereo Synthesizer oRbEq 140,852 18 *
One Tube Regenerative Radio NEW! 154,918 4 *
Op Amp Radio 398,404 80 *
Single Chip AM Radio NEW! 105,921 4 *
Single Chip FM Radio NEW! 180,014 1 *
Sound Level Meter 349,025 51 *
Stereo Tube Amplifier Weslee Kinsler 275,168 15 *
Tone Control 316,936 31
Transistor Organ 206,890 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 168,862 27 *
FM Telephone Bug 240,452 57
Phone Busy Indicator 219,521 24 *
Remote Telephone Ringer 123,338 3 *
Ringing Phone Light Flasher 225,549 35 *
Simple Phone Tap Derek Tombrello 389,477 98 *
Telephone Hold Button 134,473 10
Telephone Recorder 222,303 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.