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 Sunday, April 05, 2020	Aircraft Radio Communications Receiver	45
	12VDC Fluorescent Lamp Driver	45
Yesterday Saturday, April 04, 2020	FM Transmitter	66
	12VDC To 120VAC Inverter	65
Of All Time	12VDC To 120VAC Inverter	1,461,193
	FM Transmitter	965,217

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		206,531		61	*
Car Alarm Arming Horn Beep Canceller	bob	117,606		6	*
Wireless Auto Tachometer		319,201		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	144,196		29	*
Parallel (Printer) Port Interface		259,240		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		417,432		63	*
3 Channel Spectrum Analyzer		200,786		20
40W Fluorescent Lamp Inverter	Bart Milnes	308,429		60	*
Adjustable Strobe Light		283,530		36
Black Light		247,748		29
Colour (Sound) Organ		266,018		36
Electronic Dice NEW!		168,004		10	*
Fantastic Atom Expander		180,433		25
Flash Slave Trigger		198,281		18	*
Infa-Red Remote Control		606,293		216	*
IR Remote Extender NEW!		109,725		2	*
IR Remote Jammer	Carl	241,759		110	*
IR Remote Switch NEW!		138,508		9	*
LASER Transmitter/Receiver		384,817		92
LED Chaser		423,569		83	*
LED Metronome NEW!		88,012		3	*
LED Thermometer		189,873		22	*
Light/Dark Detector		287,911		90	*
Simple Colour Organ		122,344		10	*
Strobe Light		256,293		27	*
TRIAC Light Dimmer		478,148		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		332,539		122	*
Electromagnetic Levitator NEW!		126,775		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		890,102		214	*
AC Motor Speed Controller		362,486		29	*
Air Flow Detector		233,778		54	*
Digital Keypad Combination Lock		179,377		20
Low Voltage Alarm		208,624		58	*
Pine Racecar Victory Judge		88,238		1	*
Pulse Width Modulation DC Motor Control		626,584		94
Rain Detector		286,991		112	*
Simple Lie Detector		539,031		323
Simple Polarity Tester	Dudley LeRoux	144,915		13	*
Simple Servo Controller		202,242		22	*
Simple Touch Switch NEW!		152,253		5	*
Simple Two Speed Contactor DC Motor Controller		187,421		21	*
Stepper Motor Controller		714,593		120	*
Time Delay Relay		534,404		88
Time Delay Relay II	jawaharlal@excite.com	223,112		39	*
Touch Switch		270,670		51	*
Video Activated Relay		106,081		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	161,409		10	*
Water Detector With Sump/Bilge Pump Controller		132,242		18	*
Wire Loop Alarm	Alex Meaden	189,028		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		290,840		25	*
12VDC To 120VAC Inverter		1,461,193		689
6V to 12V Converter		491,655		121
Automatic 12V Lead Acid Battery Charger		903,125		247
Automatic Load Sensing Power Switch		147,205		16	*
Car Battery Charger		854,177		159	*
Dual Polarity Power Supply		352,911		84	*
Fixed Voltage Power Supply		290,809		52	*
High Current Power Supply		314,196		65	*
High Voltage High Current Power Supply		234,046		35	*
LASER Power Supply		273,726		28
Portable CD Player Adapter For Car		192,443		12	*
Power Supply		712,023		259	*
Solid State Tesla Coil NEW!		129,102		4
Solid State Tesla Coil/High Voltage Generator		413,376		50
Transformerless Power Supply		440,541		117	*
Voltage Inverter		315,242		51	*
Voltage Inverter II		183,608		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		562,386		182
3 Watt FM Transmitter	Rae XL Tkacik	311,596		82	*
50 Watt Amplifier		483,922		74
8 Note Tune Player		125,203		12	*
8 Watt Audio Amp		347,968		67	*
Aircraft Radio Communications Receiver		254,819		49	*
Crystal Radio		146,427		53	*
Digital Volume Control		311,955		47	*
Electronic Stethoscope		290,180		141	*
FET Audio Mixer		320,601		41
FM Transmitter		965,217		419
Guitar Fuzz Effect		224,226		52	*
Microphone Mixer	Anatoly I. Shikhatov	230,900		26	*
Mono To Stereo Synthesizer	oRbEq	113,813		18	*
One Tube Regenerative Radio NEW!		117,997		4	*
Op Amp Radio		361,381		80	*
Single Chip AM Radio NEW!		87,469		2	*
Single Chip FM Radio NEW!		151,334		1	*
Sound Level Meter		321,387		51	*
Stereo Tube Amplifier	Weslee Kinsler	248,592		15	*
Tone Control		286,220		31
Transistor Organ		178,134		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		147,530		27	*
FM Telephone Bug		219,257		57
Phone Busy Indicator		198,056		24	*
Remote Telephone Ringer		102,677		3	*
Ringing Phone Light Flasher		195,429		35	*
Simple Phone Tap	Derek Tombrello	349,271		98	*
Telephone Hold Button		112,631		10
Telephone Recorder		198,163		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.