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 Thursday, September 28, 2023	12VDC To 120VAC Inverter	44
	TRIAC Light Dimmer	27
Yesterday Wednesday, September 27, 2023	12VDC To 120VAC Inverter	28
	AC Motor Speed Controller	24
Of All Time	12VDC To 120VAC Inverter	1,522,614
	FM Transmitter	1,004,156

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		225,966		61	*
Car Alarm Arming Horn Beep Canceller	bob	135,797		6	*
Wireless Auto Tachometer		341,870		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	159,159		29	*
Parallel (Printer) Port Interface		284,223		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		446,118		63	*
3 Channel Spectrum Analyzer		220,256		20
40W Fluorescent Lamp Inverter	Bart Milnes	329,057		60	*
Adjustable Strobe Light		307,656		36
Black Light		278,287		29
Colour (Sound) Organ		289,077		36
Electronic Dice NEW!		188,013		10	*
Fantastic Atom Expander		202,093		25
Flash Slave Trigger		220,272		18	*
Infa-Red Remote Control		635,679		216	*
IR Remote Extender NEW!		131,490		2	*
IR Remote Jammer	Carl	264,412		110	*
IR Remote Switch NEW!		156,729		9	*
LASER Transmitter/Receiver		413,787		92
LED Chaser		444,270		83	*
LED Metronome NEW!		98,537		3	*
LED Thermometer		205,742		22	*
Light/Dark Detector		305,186		90	*
Simple Colour Organ		136,803		11	*
Strobe Light		274,265		27	*
TRIAC Light Dimmer		550,253		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		358,176		122	*
Electromagnetic Levitator NEW!		143,432		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		920,343		214	*
AC Motor Speed Controller		388,660		29	*
Air Flow Detector		250,790		54	*
Digital Keypad Combination Lock		201,422		20
Low Voltage Alarm		228,195		58	*
Pine Racecar Victory Judge		102,101		1	*
Pulse Width Modulation DC Motor Control		653,251		94
Rain Detector		303,596		112	*
Simple Lie Detector		562,545		323
Simple Polarity Tester	Dudley LeRoux	164,506		13	*
Simple Servo Controller		220,283		22	*
Simple Touch Switch NEW!		168,728		6	*
Simple Two Speed Contactor DC Motor Controller		203,977		21	*
Stepper Motor Controller		743,267		120	*
Time Delay Relay		554,133		88
Time Delay Relay II	jawaharlal@excite.com	245,554		39	*
Touch Switch		288,546		51	*
Video Activated Relay		121,007		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	179,588		10	*
Water Detector With Sump/Bilge Pump Controller		151,891		18	*
Wire Loop Alarm	Alex Meaden	204,919		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		313,388		25	*
12VDC To 120VAC Inverter		1,522,614		691
6V to 12V Converter		525,202		121
Automatic 12V Lead Acid Battery Charger		934,860		248
Automatic Load Sensing Power Switch		166,266		16	*
Car Battery Charger		881,275		159	*
Dual Polarity Power Supply		369,678		84	*
Fixed Voltage Power Supply		309,976		52	*
High Current Power Supply		336,383		66	*
High Voltage High Current Power Supply		251,623		35	*
LASER Power Supply		294,597		28
Portable CD Player Adapter For Car		211,383		12	*
Power Supply		736,692		259	*
Solid State Tesla Coil NEW!		144,694		4
Solid State Tesla Coil/High Voltage Generator		442,112		51
Transformerless Power Supply		461,674		117	*
Voltage Inverter		336,414		51	*
Voltage Inverter II		201,231		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		583,824		182
3 Watt FM Transmitter	Rae XL Tkacik	333,432		83	*
50 Watt Amplifier		505,983		74
8 Note Tune Player		139,894		12	*
8 Watt Audio Amp		370,784		67	*
Aircraft Radio Communications Receiver		276,525		49	*
Crystal Radio		157,729		53	*
Digital Volume Control		337,019		47	*
Electronic Stethoscope		319,389		142	*
FET Audio Mixer		342,096		41
FM Transmitter		1,004,156		420
Guitar Fuzz Effect		245,591		54	*
Microphone Mixer	Anatoly I. Shikhatov	249,292		26	*
Mono To Stereo Synthesizer	oRbEq	132,380		18	*
One Tube Regenerative Radio NEW!		138,213		4	*
Op Amp Radio		386,142		80	*
Single Chip AM Radio NEW!		98,750		3	*
Single Chip FM Radio NEW!		170,941		1	*
Sound Level Meter		340,531		51	*
Stereo Tube Amplifier	Weslee Kinsler	267,027		15	*
Tone Control		308,637		31
Transistor Organ		198,158		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		162,921		27	*
FM Telephone Bug		234,874		57
Phone Busy Indicator		213,325		24	*
Remote Telephone Ringer		117,724		3	*
Ringing Phone Light Flasher		216,424		35	*
Simple Phone Tap	Derek Tombrello	382,750		98	*
Telephone Hold Button		128,405		10
Telephone Recorder		215,753		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.