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
Sunday, September 27, 2026		 Adjustable Strobe Light69
Single Chip FM Radio67
Yesterday
Saturday, September 26, 2026		 Transistor Organ46
FM Transmitter44
Of All Time 12VDC To 120VAC Inverter1,569,570
FM Transmitter1,038,769

Auto

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Automatic Headlight Brightness Switch 238,940 61 *
Car Alarm Arming Horn Beep Canceller bob 147,431 6 *
Wireless Auto Tachometer 356,676 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 170,540 29 *
Parallel (Printer) Port Interface 303,368 71

Light/Laser

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
12VDC Fluorescent Lamp Driver 463,398 63 *
3 Channel Spectrum Analyzer 237,102 20
40W Fluorescent Lamp Inverter Bart Milnes 342,959 60 *
Adjustable Strobe Light 324,324 36
Black Light 299,516 29
Colour (Sound) Organ 306,670 36
Electronic Dice NEW! 202,672 10 *
Fantastic Atom Expander 214,569 25
Flash Slave Trigger 235,384 18 *
Infa-Red Remote Control 654,827 216 *
IR Remote Extender NEW! 146,058 3 *
IR Remote Jammer Carl 281,370 110 *
IR Remote Switch NEW! 170,175 9 *
LASER Transmitter/Receiver 433,499 92
LED Chaser 463,684 83 *
LED Metronome NEW! 112,087 3 *
LED Thermometer 218,669 22 *
Light/Dark Detector 318,216 90 *
Simple Colour Organ 149,173 11 *
Strobe Light 288,236 27 *
TRIAC Light Dimmer 570,541 55

Major Projects

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Computerize Your Room/Home 376,298 122 *
Electromagnetic Levitator NEW! 156,475 15 *

Other

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
7 Segment LED Counter 943,885 214 *
AC Motor Speed Controller 410,897 29 *
Air Flow Detector 264,791 54 *
Digital Keypad Combination Lock 214,210 20
Low Voltage Alarm 242,644 58 *
Pine Racecar Victory Judge 113,875 1 *
Pulse Width Modulation DC Motor Control 672,138 94
Rain Detector 318,643 112 *
Simple Lie Detector 581,044 323
Simple Polarity Tester Dudley LeRoux 178,557 13 *
Simple Servo Controller 235,554 22 *
Simple Touch Switch NEW! 183,601 6 *
Simple Two Speed Contactor DC Motor Controller 218,997 21 *
Stepper Motor Controller 772,203 120 *
Time Delay Relay 571,578 88
Time Delay Relay II jawaharlal@excite.com 261,043 39 *
Touch Switch 303,918 51 *
Video Activated Relay 133,532 8 *
Video Stabilizer/MacroVision Removal Antti Paarlahti 197,149 10 *
Water Detector With Sump/Bilge Pump Controller 165,699 18 *
Wire Loop Alarm Alex Meaden 217,950 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! 338,413 25 *
12VDC To 120VAC Inverter 1,569,570 691
6V to 12V Converter 546,217 121
Automatic 12V Lead Acid Battery Charger 957,173 248
Automatic Load Sensing Power Switch 180,853 16 *
Car Battery Charger 900,933 159 *
Dual Polarity Power Supply 387,457 84 *
Fixed Voltage Power Supply 324,949 52 *
High Current Power Supply 357,425 66 *
High Voltage High Current Power Supply 278,165 35 *
LASER Power Supply 311,123 28
Portable CD Player Adapter For Car 225,379 12 *
Power Supply 756,358 259 *
Solid State Tesla Coil NEW! 162,926 4
Solid State Tesla Coil/High Voltage Generator 464,940 51
Transformerless Power Supply 478,348 117 *
Voltage Inverter 360,017 51 *
Voltage Inverter II 217,359 19 *

Sound/Radio

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
22 Watt Audio Amplifier 600,308 182
3 Watt FM Transmitter Rae XL Tkacik 355,428 83 *
50 Watt Amplifier 525,209 74
8 Note Tune Player 152,790 12 *
8 Watt Audio Amp 392,332 67 *
Aircraft Radio Communications Receiver 296,503 50 *
Crystal Radio 175,593 53 *
Digital Volume Control 354,610 47 *
Electronic Stethoscope 338,372 142 *
FET Audio Mixer 358,445 41
FM Transmitter 1,038,769 420
Guitar Fuzz Effect 264,431 54 *
Microphone Mixer Anatoly I. Shikhatov 264,827 26 *
Mono To Stereo Synthesizer oRbEq 148,669 18 *
One Tube Regenerative Radio NEW! 166,972 4 *
Op Amp Radio 407,720 80 *
Single Chip AM Radio NEW! 113,150 4 *
Single Chip FM Radio NEW! 189,226 1 *
Sound Level Meter 357,062 51 *
Stereo Tube Amplifier Weslee Kinsler 283,643 15 *
Tone Control 325,516 31
Transistor Organ 215,096 29

Telephone

 Back to the top of this document
Detailed View: On/Off
Circuit Author Views Rank Comments Marker
Cut Phone Line Detector 175,025 27 *
FM Telephone Bug 246,595 57
Phone Busy Indicator 226,239 24 *
Remote Telephone Ringer 129,451 3 *
Ringing Phone Light Flasher 234,297 35 *
Simple Phone Tap Derek Tombrello 396,155 98 *
Telephone Hold Button 140,405 10
Telephone Recorder 228,590 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.