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What is Hall Effect Sensor? In order to check the practical behavior of any electrical or electronic equipment , it is very necessary to install the device which communicate between this electrical or electronic equipment and your real time system. For this purpose, so many sensors and transducers are available in market which have been using for different purposes. But in this article, we would be only talk about the hall effect sensor. Hall effect sensor is the type of sensor which is typically used for detecting the practical behavior of anything such as motor, in response to changing magnetic field.

Hall effect sensor is basically the transducers whose voltages varies by changing magnetic field. This sensor consists of a metal strip, when it is placed inside of any magnetic field then the presence of this magnetic field electron is deflected towards the edges of this strip then EMS is induced across its edges. In simple words it just works like as an analogue transducer. They are mainly used for speed detection, approximate switching, current and positioning sensing applications.

Hall effect sensor working, types and applications

A simple hall effect sensor is shown is figure 1 which consists of three terminals. The working principle of hall effect sensor is very simple. It actually consists of a current carrying metal strip when this current carrying metal strip is placed inside any transverse magnetic field then EMF is developed across the edges of this current carrying metal strip.

The magnitude of this developed EMF is depending upon the density of the flux and mobility of electron.

This property of this current carrying conductor is called hall effect. This hall effect element is typically used for sensing current and magnetic field measurements. A hall effect element circuit is shown is figure 2. According to the circuit when current is applied to terminal 1 and 3 then output is acquired at terminal 3 and 4. This scheme eliminates the offset errors typical of semiconductor Hall elements.


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It also actively compensates for temperature and strain induced offset errors. The overall effect of active plate switching and chopper stabilization yields Hall effect sensors with an order of magnitude improvement in drift of switch points or gain and offset errors.

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Melexis uses the CMOS process exclusively, for best performance and smallest chip size. The current developments in Hall effect sensor technology can be credited mostly to the integration of sophisticated signal conditioning circuits to the Hall IC.

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Melexis introduced the world's first programmable linear Hall IC. It enables field programmable functional characteristics like gain, offset, temperature coefficient of gain to compensate different magnetic materials thermal dependencies. The newest Hall ICs have integrated microcontroller cores to make an even "smarter" sensor with ROM programmable algorithms for complex signal processing in real time.

We use cookies in order to let you fully experience this website. Cookies are small files we put in your browser to mainly track usage or remember your settings of our website. Want to know more about how we use these Cookies please read our Cookie policy. What is the Hall effect? The Hall sensor is used in some automotive fuel level indicators. The main principle of operation of such indicator is position sensing of a floating element. Developed by Everett A. Vorthmann and Joseph T.

Hall-effect sensors

Maupin for Micro Switch a division of Honeywell in , the switch was known to still be in production until as late as The Honeywell Hall effect switch is most famously used in the Space-cadet keyboard , [ citation needed ] a keyboard used on LISP machines. From Wikipedia, the free encyclopedia. Devices that measure magnetic field strength; used to detect the Hall effect.

The neutrality of this section is disputed. Relevant discussion may be found on the talk page. Please do not remove this message until conditions to do so are met. December Learn how and when to remove this template message. Hall-effect sensors: theory and applications 2, illustrated ed. Hall effect devices 2, illustrated ed. CRC Press.

How does the Hall effect work?

Advances in Intelligent Systems and Computing. Retrieved 26 May Retrieved 2 September Geophone Hydrophone Microphone Seismometer. Air—fuel ratio meter Blind spot monitor Crankshaft position sensor Curb feeler Defect detector Engine coolant temperature sensor Hall effect sensor MAP sensor Mass flow sensor Omniview technology Oxygen sensor Parking sensors Radar gun Speed sensor Speedometer Throttle position sensor Tire-pressure monitoring system Torque sensor Transmission fluid temperature sensor Turbine speed sensor Variable reluctance sensor Vehicle speed sensor Water sensor Wheel speed sensor.

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Hall effect sensors working, types and applications

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