Explain difference between enhancement MOSFET and depletion type MOSFET.

1 Answer

Answer :

  • In enhancement MOSFET channel is not initially exists but in depletion MOSFET channel is already exists.
  • In case of depletion MOSFET if the voltage is applied between drain and source the drain current will flow even at VGS=0. But in case of enhancement MOSFET, there is need to induce a channel for current to flow.
  • Depletion MOSFET can be operated in depletion mode and enhancement mode but enhancement MOSFET can only be operated in enhancement mode.
  • The default state of depletion MOSFET is on state means current flows without applying gate to source voltage, and the default state of enhancement MOSFET is off state means no current flows without applying gate to source voltage.
  • In depletion MOSFET voltage is applied to collapse the channel and in enhancement MOSFET voltage is applied to create a channel.

  • depletion MOSFET & enhancement MOSFET

depletion MOSFET & enhancement MOSFET

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Related Questions

Description : What is depletion type MOSFET?..........

Answer : Depletion MOSFET: Depletion MOSFET is a MOSFET in which the channel already exists. If we apply a voltage between drain and source then the drain current will flow even if the gate to source ... in figure. The drain current will be reduced as the gate to source voltage made more negative.

Description : The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of (A) 1.5V (B) 2.5V (C) 3.5V (D) 4.5V

Answer : The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of 2.5V

Description : What is enhancement MOSFET?...............

Answer : Enhancement MOSFET: There are two types of MOSFET one is enhancement MOSFET and second is depletion MOSFET. In enhancement MOSFET channel is created by applying threshold voltage between gate and source ... mode. The enhancement MOSFET will not conduct if the gate to source voltage is zero.

Description : Describe the operation of N channel enhancement type MOSFET with diagram.

Answer : As its name indicates, this MOSFET operates only in the enhancement mode and has no depletion mode. It operates with large positive gate voltage only. It does not conduct when the ... of charge carriers attracted to the positive gate. Thus drain current is controlled by the gate potential.

Description : Define Depletion region and Barrier voltage of PN junction.

Answer : 1. Depletion region : The region consisting of immobile positive charge at n-side and immobile negative charge at p-side near the junction acts like a barrier and prevents the further flow of ... charge formed at the p-n junction is called barrier voltage, barrier potential or junction barrier.

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