Plz i need your help and support no need to for details, short answer acceptable

Question

Plz i need your help and support

no need to for details, short answer acceptable

NMOS:

Describe the operating modes of an NMOS transistor.

Qualitatively explain how the gate voltage affects the formation and pinching off of the channel in an NMOS transistor

Diode:

Describe the difference between a linear and nonlinear i-v characteristic.

Qualitatively describe how temperature change affects the i-v characteristic of a PN junction.

explain how the operating point can only move along this load line.

Explanation / Answer

NMOS:

modes are operations are: Cutoff (When VGS < Vth:), Triode mode (VGS > Vth and VDS < ( VGS – Vth )). Saturation or active mode (VGS > Vth and VDS ( VGS – Vth )).

At the point when VDS =VDSsat, the channel just touches the drain and the corresponding drain to source voltage is known as the pinch off voltage. Above the saturation voltage the current flow gets constant. Carriers move down the channel propelled by the relatively weak electric field along it. When they reach the edge of the pinched-off region, they are sucked across the depletion region by the strong electric field. The voltage drop across the channel does not increase as the drain voltage is increased; instead the pinched-off region widens. Thus, the drain current reaches a limit and ceases to increase.

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