Question

In: Electrical Engineering

i. Explain five (5) applications of the hall effects ii. With the aid of a diagram,...

i. Explain five (5) applications of the hall effects
ii. With the aid of a diagram, explain how a P-N Junction is form.
iii. State five (5) application of PN Junction, and explain the property of the PN junction that make
those application possible.
iv. Explain what carrier mobility is and elaborate on the factors that influence carrier mobility.

Solutions

Expert Solution

I) ans::

  • Hall Effect is used to find whether a semiconductor is N-type or P-type.
  • Hall Effect is used to find carrier concentration.
  • Hall Effect is used to calculate the mobility of charge carriers (free electrons and holes).
  • Hall Effect is used to measure conductivity.
  • Hall Effect is used to measure a.c. power and the strength of magnetic field.
  • Hall Effect is used in an instrument called Hall Effect multiplier which gives the output proportional to the product of two input signals

ii) ::: ans

iii) ::: ans

..It is used in clipping circuits as wave shaping circuits in computers, radios, radars etc.

• It is used as switches in digital logic designs.
• It is used in detector and demodulator circuits.
• It is used in clamping circuits in TV receivers as well as voltage multipliers.
• It is used as rectifiers in DC power supply manufacturing.

iv) :: ans


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