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, July 27, 2024	6V to 12V Converter	13
	12VDC To 120VAC Inverter	11
Yesterday Friday, July 26, 2024	12VDC To 120VAC Inverter	40
	FM Transmitter	34
Of All Time	12VDC To 120VAC Inverter	1,535,332
	FM Transmitter	1,012,396

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		228,377		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,868		6	*
Wireless Auto Tachometer		344,674		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	161,178		29	*
Parallel (Printer) Port Interface		288,332		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		449,522		63	*
3 Channel Spectrum Analyzer		223,707		20
40W Fluorescent Lamp Inverter	Bart Milnes	331,669		60	*
Adjustable Strobe Light		310,770		36
Black Light		282,953		29
Colour (Sound) Organ		292,491		36
Electronic Dice NEW!		190,783		10	*
Fantastic Atom Expander		204,403		25
Flash Slave Trigger		222,938		18	*
Infa-Red Remote Control		639,096		216	*
IR Remote Extender NEW!		134,284		3	*
IR Remote Jammer	Carl	268,040		110	*
IR Remote Switch NEW!		159,113		9	*
LASER Transmitter/Receiver		418,924		92
LED Chaser		448,023		83	*
LED Metronome NEW!		100,988		3	*
LED Thermometer		208,262		22	*
Light/Dark Detector		307,584		90	*
Simple Colour Organ		138,837		11	*
Strobe Light		277,260		27	*
TRIAC Light Dimmer		555,125		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		361,259		122	*
Electromagnetic Levitator NEW!		145,868		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		924,634		214	*
AC Motor Speed Controller		393,819		29	*
Air Flow Detector		253,454		54	*
Digital Keypad Combination Lock		203,740		20
Low Voltage Alarm		230,870		58	*
Pine Racecar Victory Judge		104,061		1	*
Pulse Width Modulation DC Motor Control		657,025		94
Rain Detector		306,396		112	*
Simple Lie Detector		566,687		323
Simple Polarity Tester	Dudley LeRoux	167,057		13	*
Simple Servo Controller		223,136		22	*
Simple Touch Switch NEW!		171,574		6	*
Simple Two Speed Contactor DC Motor Controller		206,860		21	*
Stepper Motor Controller		749,117		120	*
Time Delay Relay		557,580		88
Time Delay Relay II	jawaharlal@excite.com	248,975		39	*
Touch Switch		291,467		51	*
Video Activated Relay		123,382		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	183,199		10	*
Water Detector With Sump/Bilge Pump Controller		154,583		18	*
Wire Loop Alarm	Alex Meaden	207,205		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		318,488		25	*
12VDC To 120VAC Inverter		1,535,332		691
6V to 12V Converter		530,021		121
Automatic 12V Lead Acid Battery Charger		939,527		248
Automatic Load Sensing Power Switch		169,153		16	*
Car Battery Charger		885,434		159	*
Dual Polarity Power Supply		373,186		84	*
Fixed Voltage Power Supply		313,146		52	*
High Current Power Supply		341,434		66	*
High Voltage High Current Power Supply		265,864		35	*
LASER Power Supply		298,208		28
Portable CD Player Adapter For Car		213,978		12	*
Power Supply		741,591		259	*
Solid State Tesla Coil NEW!		148,400		4
Solid State Tesla Coil/High Voltage Generator		446,856		51
Transformerless Power Supply		465,288		117	*
Voltage Inverter		341,804		51	*
Voltage Inverter II		205,166		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		587,502		182
3 Watt FM Transmitter	Rae XL Tkacik	337,950		83	*
50 Watt Amplifier		510,189		74
8 Note Tune Player		142,274		12	*
8 Watt Audio Amp		375,661		67	*
Aircraft Radio Communications Receiver		281,026		49	*
Crystal Radio		160,765		53	*
Digital Volume Control		340,604		47	*
Electronic Stethoscope		323,442		142	*
FET Audio Mixer		345,555		41
FM Transmitter		1,012,396		420
Guitar Fuzz Effect		249,716		54	*
Microphone Mixer	Anatoly I. Shikhatov	252,554		26	*
Mono To Stereo Synthesizer	oRbEq	135,849		18	*
One Tube Regenerative Radio NEW!		145,141		4	*
Op Amp Radio		391,694		80	*
Single Chip AM Radio NEW!		101,615		3	*
Single Chip FM Radio NEW!		174,674		1	*
Sound Level Meter		343,977		51	*
Stereo Tube Amplifier	Weslee Kinsler	270,315		15	*
Tone Control		311,758		31
Transistor Organ		201,713		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		165,181		27	*
FM Telephone Bug		236,858		57
Phone Busy Indicator		215,573		24	*
Remote Telephone Ringer		119,818		3	*
Ringing Phone Light Flasher		220,437		35	*
Simple Phone Tap	Derek Tombrello	385,323		98	*
Telephone Hold Button		130,678		10
Telephone Recorder		218,215		55	*

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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.