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, September 30, 2023	6V to 12V Converter	22
	12VDC To 120VAC Inverter	19
Yesterday Friday, September 29, 2023	12VDC To 120VAC Inverter	43
	12V To 24V DC-DC Converter	29
Of All Time	12VDC To 120VAC Inverter	1,522,677
	FM Transmitter	1,004,189

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		225,978		61	*
Car Alarm Arming Horn Beep Canceller	bob	135,804		6	*
Wireless Auto Tachometer		341,891		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	159,170		29	*
Parallel (Printer) Port Interface		284,261		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		446,134		63	*
3 Channel Spectrum Analyzer		220,276		20
40W Fluorescent Lamp Inverter	Bart Milnes	329,068		60	*
Adjustable Strobe Light		307,668		36
Black Light		278,313		29
Colour (Sound) Organ		289,101		36
Electronic Dice NEW!		188,028		10	*
Fantastic Atom Expander		202,102		25
Flash Slave Trigger		220,284		18	*
Infa-Red Remote Control		635,695		216	*
IR Remote Extender NEW!		131,499		2	*
IR Remote Jammer	Carl	264,427		110	*
IR Remote Switch NEW!		156,741		9	*
LASER Transmitter/Receiver		413,829		92
LED Chaser		444,289		83	*
LED Metronome NEW!		98,547		3	*
LED Thermometer		205,750		22	*
Light/Dark Detector		305,201		90	*
Simple Colour Organ		136,814		11	*
Strobe Light		274,287		27	*
TRIAC Light Dimmer		550,268		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		358,190		122	*
Electromagnetic Levitator NEW!		143,446		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		920,369		214	*
AC Motor Speed Controller		388,687		29	*
Air Flow Detector		250,812		54	*
Digital Keypad Combination Lock		201,440		20
Low Voltage Alarm		228,211		58	*
Pine Racecar Victory Judge		102,111		1	*
Pulse Width Modulation DC Motor Control		653,265		94
Rain Detector		303,620		112	*
Simple Lie Detector		562,562		323
Simple Polarity Tester	Dudley LeRoux	164,518		13	*
Simple Servo Controller		220,307		22	*
Simple Touch Switch NEW!		168,741		6	*
Simple Two Speed Contactor DC Motor Controller		203,993		21	*
Stepper Motor Controller		743,284		120	*
Time Delay Relay		554,159		88
Time Delay Relay II	jawaharlal@excite.com	245,576		39	*
Touch Switch		288,560		51	*
Video Activated Relay		121,020		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	179,606		10	*
Water Detector With Sump/Bilge Pump Controller		151,908		18	*
Wire Loop Alarm	Alex Meaden	204,933		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		313,437		25	*
12VDC To 120VAC Inverter		1,522,677		691
6V to 12V Converter		525,250		121
Automatic 12V Lead Acid Battery Charger		934,881		248
Automatic Load Sensing Power Switch		166,287		16	*
Car Battery Charger		881,299		159	*
Dual Polarity Power Supply		369,702		84	*
Fixed Voltage Power Supply		309,996		52	*
High Current Power Supply		336,405		66	*
High Voltage High Current Power Supply		251,647		35	*
LASER Power Supply		294,624		28
Portable CD Player Adapter For Car		211,413		12	*
Power Supply		736,710		259	*
Solid State Tesla Coil NEW!		144,712		4
Solid State Tesla Coil/High Voltage Generator		442,139		51
Transformerless Power Supply		461,694		117	*
Voltage Inverter		336,433		51	*
Voltage Inverter II		201,250		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		583,846		182
3 Watt FM Transmitter	Rae XL Tkacik	333,457		83	*
50 Watt Amplifier		506,008		74
8 Note Tune Player		139,908		12	*
8 Watt Audio Amp		370,804		67	*
Aircraft Radio Communications Receiver		276,562		49	*
Crystal Radio		157,743		53	*
Digital Volume Control		337,043		47	*
Electronic Stethoscope		319,410		142	*
FET Audio Mixer		342,116		41
FM Transmitter		1,004,189		420
Guitar Fuzz Effect		245,609		54	*
Microphone Mixer	Anatoly I. Shikhatov	249,307		26	*
Mono To Stereo Synthesizer	oRbEq	132,393		18	*
One Tube Regenerative Radio NEW!		138,236		4	*
Op Amp Radio		386,167		80	*
Single Chip AM Radio NEW!		98,766		3	*
Single Chip FM Radio NEW!		170,971		1	*
Sound Level Meter		340,550		51	*
Stereo Tube Amplifier	Weslee Kinsler	267,046		15	*
Tone Control		308,666		31
Transistor Organ		198,183		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		162,934		27	*
FM Telephone Bug		234,886		57
Phone Busy Indicator		213,335		24	*
Remote Telephone Ringer		117,733		3	*
Ringing Phone Light Flasher		216,442		35	*
Simple Phone Tap	Derek Tombrello	382,765		98	*
Telephone Hold Button		128,423		10
Telephone Recorder		215,771		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.