Electronic Circuits

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 Saturday, October 19, 2019	12VDC To 120VAC Inverter	26
	Car Battery Charger	25
Yesterday Friday, October 18, 2019	Touch Switch	50
	12VDC To 120VAC Inverter	39
Of All Time	12VDC To 120VAC Inverter	1,449,671
	FM Transmitter	958,112

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		201,152		61	*
Car Alarm Arming Horn Beep Canceller	bob	112,254		6	*
Wireless Auto Tachometer		312,647		58

Computer

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	140,518		29	*
Parallel (Printer) Port Interface		252,780		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		409,311		63	*
3 Channel Spectrum Analyzer		196,412		20
40W Fluorescent Lamp Inverter	Bart Milnes	301,919		60	*
Adjustable Strobe Light		277,336		36
Black Light		240,498		29
Colour (Sound) Organ		259,880		36
Electronic Dice NEW!		162,236		10	*
Fantastic Atom Expander		174,446		25
Flash Slave Trigger		192,888		18	*
Infa-Red Remote Control		599,147		216	*
IR Remote Extender NEW!		103,697		2	*
IR Remote Jammer	Carl	236,426		110	*
IR Remote Switch NEW!		132,783		9	*
LASER Transmitter/Receiver		378,019		92
LED Chaser		419,021		83	*
LED Metronome NEW!		86,273		3	*
LED Thermometer		185,641		22	*
Light/Dark Detector		283,606		90	*
Simple Colour Organ		118,975		10	*
Strobe Light		252,394		27	*
TRIAC Light Dimmer		470,541		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		326,241		122	*
Electromagnetic Levitator NEW!		122,790		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		881,840		214	*
AC Motor Speed Controller		356,958		29	*
Air Flow Detector		229,847		54	*
Digital Keypad Combination Lock		175,334		20
Low Voltage Alarm		204,071		58	*
Pine Racecar Victory Judge		84,872		1	*
Pulse Width Modulation DC Motor Control		621,756		93
Rain Detector		283,279		112	*
Simple Lie Detector		534,084		323
Simple Polarity Tester	Dudley LeRoux	139,369		13	*
Simple Servo Controller		198,212		22	*
Simple Touch Switch NEW!		148,596		5	*
Simple Two Speed Contactor DC Motor Controller		183,616		21	*
Stepper Motor Controller		708,352		120	*
Time Delay Relay		527,747		88
Time Delay Relay II	jawaharlal@excite.com	217,500		39	*
Touch Switch		266,386		51	*
Video Activated Relay		102,660		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	157,224		10	*
Water Detector With Sump/Bilge Pump Controller		128,457		18	*
Wire Loop Alarm	Alex Meaden	185,441		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		285,481		25	*
12VDC To 120VAC Inverter		1,449,671		688
6V to 12V Converter		472,716		121
Automatic 12V Lead Acid Battery Charger		894,886		246
Automatic Load Sensing Power Switch		142,783		16	*
Car Battery Charger		847,004		159	*
Dual Polarity Power Supply		349,278		84	*
Fixed Voltage Power Supply		286,721		52	*
High Current Power Supply		308,454		65	*
High Voltage High Current Power Supply		230,012		35	*
LASER Power Supply		268,635		28
Portable CD Player Adapter For Car		188,345		12	*
Power Supply		705,963		259	*
Solid State Tesla Coil NEW!		126,361		4
Solid State Tesla Coil/High Voltage Generator		407,043		50
Transformerless Power Supply		435,743		117	*
Voltage Inverter		312,118		51	*
Voltage Inverter II		179,964		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		557,585		182
3 Watt FM Transmitter	Rae XL Tkacik	306,395		82	*
50 Watt Amplifier		478,337		74
8 Note Tune Player		121,809		12	*
8 Watt Audio Amp		343,003		67	*
Aircraft Radio Communications Receiver		246,647		49	*
Crystal Radio		144,452		53	*
Digital Volume Control		307,632		47	*
Electronic Stethoscope		285,077		141	*
FET Audio Mixer		315,938		41
FM Transmitter		958,112		419
Guitar Fuzz Effect		219,668		52	*
Microphone Mixer	Anatoly I. Shikhatov	226,358		26	*
Mono To Stereo Synthesizer	oRbEq	109,476		18	*
One Tube Regenerative Radio NEW!		115,082		4	*
Op Amp Radio		356,170		80	*
Single Chip AM Radio NEW!		85,514		2	*
Single Chip FM Radio NEW!		146,515		1	*
Sound Level Meter		316,997		51	*
Stereo Tube Amplifier	Weslee Kinsler	244,255		15	*
Tone Control		281,497		31
Transistor Organ		173,857		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		144,017		27	*
FM Telephone Bug		215,642		57
Phone Busy Indicator		194,398		24	*
Remote Telephone Ringer		99,339		3	*
Ringing Phone Light Flasher		190,802		34	*
Simple Phone Tap	Derek Tombrello	342,891		98	*
Telephone Hold Button		108,744		10
Telephone Recorder		192,042		54	*

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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.