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, September 24, 2017	Solid State Tesla Coil/High Voltage Generator	5
	Black Light	3
Yesterday Saturday, September 23, 2017	Dual Polarity Power Supply	91
	12VDC To 120VAC Inverter	61
Of All Time	12VDC To 120VAC Inverter	1,389,956
	FM Transmitter	922,449

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		185,433		61	*
Car Alarm Arming Horn Beep Canceller	bob	97,893		6	*
Wireless Auto Tachometer		292,590		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	129,286		29	*
Parallel (Printer) Port Interface		231,597		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		386,691		62	*
3 Channel Spectrum Analyzer		179,393		20
40W Fluorescent Lamp Inverter	Bart Milnes	285,165		60	*
Adjustable Strobe Light		257,576		36
Black Light		219,691		29
Colour (Sound) Organ		241,879		36
Electronic Dice NEW!		146,814		9	*
Fantastic Atom Expander		156,210		25
Flash Slave Trigger		177,581		17	*
Infa-Red Remote Control		574,128		216	*
IR Remote Extender NEW!		86,788		2	*
IR Remote Jammer	Carl	219,722		110	*
IR Remote Switch NEW!		116,714		9	*
LASER Transmitter/Receiver		357,279		92
LED Chaser		400,006		83	*
LED Metronome NEW!		77,125		3	*
LED Thermometer		171,298		22	*
Light/Dark Detector		269,893		89	*
Simple Colour Organ		107,435		10	*
Strobe Light		238,702		27	*
TRIAC Light Dimmer		448,635		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		306,866		122	*
Electromagnetic Levitator NEW!		107,631		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		847,332		214	*
AC Motor Speed Controller		330,671		29	*
Air Flow Detector		214,746		54	*
Digital Keypad Combination Lock		158,530		20
Low Voltage Alarm		187,688		58	*
Pine Racecar Victory Judge		72,043		1	*
Pulse Width Modulation DC Motor Control		602,674		93
Rain Detector		267,383		112	*
Simple Lie Detector		509,970		323
Simple Polarity Tester	Dudley LeRoux	123,399		13	*
Simple Servo Controller		179,489		22	*
Simple Touch Switch NEW!		134,358		5	*
Simple Two Speed Contactor DC Motor Controller		171,352		21	*
Stepper Motor Controller		665,463		120	*
Time Delay Relay		503,476		88
Time Delay Relay II	jawaharlal@excite.com	199,507		39	*
Touch Switch		251,190		51	*
Video Activated Relay		89,844		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	141,228		10	*
Water Detector With Sump/Bilge Pump Controller		114,947		18	*
Wire Loop Alarm	Alex Meaden	173,295		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		260,461		25	*
12VDC To 120VAC Inverter		1,389,956		687
6V to 12V Converter		438,851		121
Automatic 12V Lead Acid Battery Charger		857,172		246
Automatic Load Sensing Power Switch		128,408		15	*
Car Battery Charger		810,435		159	*
Dual Polarity Power Supply		301,345		84	*
Fixed Voltage Power Supply		272,511		52	*
High Current Power Supply		289,385		64	*
High Voltage High Current Power Supply		216,481		35	*
LASER Power Supply		246,311		28
Portable CD Player Adapter For Car		173,964		12	*
Power Supply		676,209		259	*
Solid State Tesla Coil NEW!		111,644		3
Solid State Tesla Coil/High Voltage Generator		377,824		50
Transformerless Power Supply		412,254		117	*
Voltage Inverter		298,058		51	*
Voltage Inverter II		168,993		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		536,662		182
3 Watt FM Transmitter	Rae XL Tkacik	288,986		81	*
50 Watt Amplifier		452,596		74
8 Note Tune Player		111,134		12	*
8 Watt Audio Amp		321,128		67	*
Aircraft Radio Communications Receiver		225,507		49	*
Crystal Radio		132,069		53	*
Digital Volume Control		290,077		47	*
Electronic Stethoscope		265,672		141	*
FET Audio Mixer		295,716		40
FM Transmitter		922,449		418
Guitar Fuzz Effect		199,374		52	*
Microphone Mixer	Anatoly I. Shikhatov	208,069		26	*
Mono To Stereo Synthesizer	oRbEq	93,839		18	*
One Tube Regenerative Radio NEW!		98,689		4	*
Op Amp Radio		334,829		80	*
Single Chip AM Radio NEW!		75,928		2	*
Single Chip FM Radio NEW!		126,802		1	*
Sound Level Meter		297,796		51	*
Stereo Tube Amplifier	Weslee Kinsler	227,052		15	*
Tone Control		261,666		31
Transistor Organ		157,583		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		133,521		27	*
FM Telephone Bug		197,543		57
Phone Busy Indicator		176,531		24	*
Remote Telephone Ringer		89,499		3	*
Ringing Phone Light Flasher		175,766		33	*
Simple Phone Tap	Derek Tombrello	325,142		98	*
Telephone Hold Button		93,690		9
Telephone Recorder		177,919		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.