0
521views
The output resistance of a source follower is
(a) Low (b) Moderate
(c) High (d) None of the above
1 Answer
written 3.9 years ago by |
Answer: (a)Low
The small signal model of common drain (source follower) circuit is shown.
OUTPUT PART OF COMMON DRAIN CIRCUIT TO CALCULATE OUTPUT IMPEDANCE
Thus, the value of output impedance can be evaluated
Rout=1gm+1ro||rc=1gm
The value of gm is made large enough,so the resultant …