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, November 14, 2019	12VDC To 120VAC Inverter	54
	Automatic 12V Lead Acid Battery Charger	48
Yesterday Wednesday, November 13, 2019	12VDC To 120VAC Inverter	80
	Dual Polarity Power Supply	77
Of All Time	12VDC To 120VAC Inverter	1,451,578
	FM Transmitter	959,186

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		201,603		61	*
Car Alarm Arming Horn Beep Canceller	bob	112,626		6	*
Wireless Auto Tachometer		313,327		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	140,855		29	*
Parallel (Printer) Port Interface		253,427		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		409,889		63	*
3 Channel Spectrum Analyzer		196,871		20
40W Fluorescent Lamp Inverter	Bart Milnes	303,055		60	*
Adjustable Strobe Light		277,838		36
Black Light		241,146		29
Colour (Sound) Organ		260,372		36
Electronic Dice NEW!		162,694		10	*
Fantastic Atom Expander		174,997		25
Flash Slave Trigger		193,252		18	*
Infa-Red Remote Control		599,777		216	*
IR Remote Extender NEW!		104,131		2	*
IR Remote Jammer	Carl	236,892		110	*
IR Remote Switch NEW!		133,185		9	*
LASER Transmitter/Receiver		378,698		92
LED Chaser		419,574		83	*
LED Metronome NEW!		86,588		3	*
LED Thermometer		186,099		22	*
Light/Dark Detector		284,074		90	*
Simple Colour Organ		119,261		10	*
Strobe Light		252,804		27	*
TRIAC Light Dimmer		471,430		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		326,771		122	*
Electromagnetic Levitator NEW!		123,142		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		882,811		214	*
AC Motor Speed Controller		357,832		29	*
Air Flow Detector		230,244		54	*
Digital Keypad Combination Lock		175,773		20
Low Voltage Alarm		204,488		58	*
Pine Racecar Victory Judge		85,266		1	*
Pulse Width Modulation DC Motor Control		622,322		94
Rain Detector		283,667		112	*
Simple Lie Detector		534,735		323
Simple Polarity Tester	Dudley LeRoux	139,755		13	*
Simple Servo Controller		198,707		22	*
Simple Touch Switch NEW!		148,915		5	*
Simple Two Speed Contactor DC Motor Controller		183,962		21	*
Stepper Motor Controller		709,414		120	*
Time Delay Relay		528,378		88
Time Delay Relay II	jawaharlal@excite.com	217,901		39	*
Touch Switch		266,837		51	*
Video Activated Relay		102,937		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	157,653		10	*
Water Detector With Sump/Bilge Pump Controller		128,817		18	*
Wire Loop Alarm	Alex Meaden	185,836		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		286,191		25	*
12VDC To 120VAC Inverter		1,451,578		689
6V to 12V Converter		473,917		121
Automatic 12V Lead Acid Battery Charger		896,496		247
Automatic Load Sensing Power Switch		143,213		16	*
Car Battery Charger		848,100		159	*
Dual Polarity Power Supply		350,407		84	*
Fixed Voltage Power Supply		287,205		52	*
High Current Power Supply		309,106		65	*
High Voltage High Current Power Supply		230,393		35	*
LASER Power Supply		269,208		28
Portable CD Player Adapter For Car		188,736		12	*
Power Supply		706,784		259	*
Solid State Tesla Coil NEW!		126,839		4
Solid State Tesla Coil/High Voltage Generator		407,868		50
Transformerless Power Supply		436,370		117	*
Voltage Inverter		312,598		51	*
Voltage Inverter II		180,306		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		558,136		182
3 Watt FM Transmitter	Rae XL Tkacik	306,882		82	*
50 Watt Amplifier		478,984		74
8 Note Tune Player		122,089		12	*
8 Watt Audio Amp		343,614		67	*
Aircraft Radio Communications Receiver		247,256		49	*
Crystal Radio		144,861		53	*
Digital Volume Control		308,244		47	*
Electronic Stethoscope		285,685		141	*
FET Audio Mixer		316,451		41
FM Transmitter		959,186		419
Guitar Fuzz Effect		220,200		52	*
Microphone Mixer	Anatoly I. Shikhatov	226,969		26	*
Mono To Stereo Synthesizer	oRbEq	109,995		18	*
One Tube Regenerative Radio NEW!		115,589		4	*
Op Amp Radio		356,676		80	*
Single Chip AM Radio NEW!		85,833		2	*
Single Chip FM Radio NEW!		147,057		1	*
Sound Level Meter		317,479		51	*
Stereo Tube Amplifier	Weslee Kinsler	244,778		15	*
Tone Control		282,153		31
Transistor Organ		174,362		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		144,366		27	*
FM Telephone Bug		216,080		57
Phone Busy Indicator		194,881		24	*
Remote Telephone Ringer		99,585		3	*
Ringing Phone Light Flasher		191,450		35	*
Simple Phone Tap	Derek Tombrello	343,346		98	*
Telephone Hold Button		109,199		10
Telephone Recorder		192,879		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.