Hall Effect Transducers | Sensor & Industrial Instrumentation - Electronics and Communication Engineering (ECE) PDF Download

Hall Effect Transducers

When a conductor is kept perpendicular to the magnetic field and a direct current is passed through it, it results in an electric field perpendicular to the directions of both the magnetic field and current with a magnitude proportional to the product of the magnetic field strength and current.

Hall Effect Transducers | Sensor & Industrial Instrumentation - Electronics and Communication Engineering (ECE)

  • The voltage so developed is very small and it is difficult to detect it. But in some semiconductors such as germanium, this voltage is enough for measurement with a sensitive moving coil instrument. This phenomenon is called the Hall Effect.
  • Commercial hall effect transducers are made from germanium or other semiconductor materials. They find application in instruments that measure magnetic field with small flux densities.
  • Hall effect element can be used for measurement of current by the magnetic field produced due to flow of current.
  • Hall effect element may be used for measuring a linear displacement or location of a structural element in case where it is possible to change the magnetic field strength by variation in the geometry of a magnetic structure.

➢ Advantages

  • Non-contact device
  • Small size
  • High resolution 

➢ Dis-advantages

  • High sensitivity to temperature changes
  • Variation of hall coefficient from plate to plate, hence requires individual calibration in each case
The document Hall Effect Transducers | Sensor & Industrial Instrumentation - Electronics and Communication Engineering (ECE) is a part of the Electronics and Communication Engineering (ECE) Course Sensor & Industrial Instrumentation.
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