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, June 19, 2025		 Stepper Motor Controller42
3 Watt FM Transmitter33
Yesterday
Wednesday, June 18, 2025		 12VDC To 120VAC Inverter61
TRIAC Light Dimmer43
Of All Time 12VDC To 120VAC Inverter1,549,091
FM Transmitter1,022,592

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 232,332 61 *
Car Alarm Arming Horn Beep Canceller bob 141,435 6 *
Wireless Auto Tachometer 349,151 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 164,770 29 *
Parallel (Printer) Port Interface 293,880 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 454,739 63 *
3 Channel Spectrum Analyzer 228,934 20
40W Fluorescent Lamp Inverter Bart Milnes 335,822 60 *
Adjustable Strobe Light 316,144 36
Black Light 290,039 29
Colour (Sound) Organ 297,671 36
Electronic Dice NEW! 195,047 10 *
Fantastic Atom Expander 208,077 25
Flash Slave Trigger 227,439 18 *
Infa-Red Remote Control 644,901 216 *
IR Remote Extender NEW! 138,657 3 *
IR Remote Jammer Carl 273,141 110 *
IR Remote Switch NEW! 163,006 9 *
LASER Transmitter/Receiver 424,828 92
LED Chaser 453,811 83 *
LED Metronome NEW! 104,944 3 *
LED Thermometer 212,282 22 *
Light/Dark Detector 311,522 90 *
Simple Colour Organ 142,532 11 *
Strobe Light 281,430 27 *
TRIAC Light Dimmer 560,889 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 367,030 122 *
Electromagnetic Levitator NEW! 149,880 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 931,864 214 *
AC Motor Speed Controller 400,644 29 *
Air Flow Detector 257,567 54 *
Digital Keypad Combination Lock 207,447 20
Low Voltage Alarm 235,038 58 *
Pine Racecar Victory Judge 107,628 1 *
Pulse Width Modulation DC Motor Control 662,737 94
Rain Detector 311,068 112 *
Simple Lie Detector 572,241 323
Simple Polarity Tester Dudley LeRoux 171,054 13 *
Simple Servo Controller 227,782 22 *
Simple Touch Switch NEW! 175,909 6 *
Simple Two Speed Contactor DC Motor Controller 211,314 21 *
Stepper Motor Controller 759,378 120 *
Time Delay Relay 562,944 88
Time Delay Relay II jawaharlal@excite.com 253,564 39 *
Touch Switch 296,171 51 *
Video Activated Relay 127,079 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 187,664 10 *
Water Detector With Sump/Bilge Pump Controller 158,593 18 *
Wire Loop Alarm Alex Meaden 211,192 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! 325,711 25 *
12VDC To 120VAC Inverter 1,549,091 691
6V to 12V Converter 536,203 121
Automatic 12V Lead Acid Battery Charger 946,182 248
Automatic Load Sensing Power Switch 173,467 16 *
Car Battery Charger 891,416 159 *
Dual Polarity Power Supply 378,335 84 *
Fixed Voltage Power Supply 318,043 52 *
High Current Power Supply 348,083 66 *
High Voltage High Current Power Supply 270,607 35 *
LASER Power Supply 303,405 28
Portable CD Player Adapter For Car 218,146 12 *
Power Supply 747,377 259 *
Solid State Tesla Coil NEW! 153,633 4
Solid State Tesla Coil/High Voltage Generator 453,604 51
Transformerless Power Supply 470,452 117 *
Voltage Inverter 349,260 51 *
Voltage Inverter II 210,052 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 592,577 182
3 Watt FM Transmitter Rae XL Tkacik 344,821 83 *
50 Watt Amplifier 516,353 74
8 Note Tune Player 146,408 12 *
8 Watt Audio Amp 382,043 67 *
Aircraft Radio Communications Receiver 287,376 50 *
Crystal Radio 166,066 53 *
Digital Volume Control 346,322 47 *
Electronic Stethoscope 329,322 142 *
FET Audio Mixer 350,938 41
FM Transmitter 1,022,592 420
Guitar Fuzz Effect 255,196 54 *
Microphone Mixer Anatoly I. Shikhatov 257,350 26 *
Mono To Stereo Synthesizer oRbEq 140,916 18 *
One Tube Regenerative Radio NEW! 155,026 4 *
Op Amp Radio 398,468 80 *
Single Chip AM Radio NEW! 105,979 4 *
Single Chip FM Radio NEW! 180,084 1 *
Sound Level Meter 349,094 51 *
Stereo Tube Amplifier Weslee Kinsler 275,236 15 *
Tone Control 317,012 31
Transistor Organ 206,969 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 168,916 27 *
FM Telephone Bug 240,492 57
Phone Busy Indicator 219,585 24 *
Remote Telephone Ringer 123,379 3 *
Ringing Phone Light Flasher 225,611 35 *
Simple Phone Tap Derek Tombrello 389,547 98 *
Telephone Hold Button 134,516 10
Telephone Recorder 222,339 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.