Question

The input impedance of JFET is in the range of
a) about 2 M ohm
b)200 to 400 k ohm
c) 20 to 40 k ohm
d)below 2 k ohm​

Answer 1

Answer:

Explanation:

option A is correct as JFET need more ip impidance

Answer 2

The input impedance of JFET is in the range of about 2 M ohm. (option a)

• JFET is called a junction gate field-effect transistor.  It is one of the simplest field transfers which does not require biasing current and they have control over their voltage.
• The gate junction of JFET is reversed bias. During the flow of current through the device, the minority charge carriers do not contribute resulting in a very high impedance.
• JFET consists of an insulating layer at the input instead of a PN junction.