Electronic Devices and Circuits - Engineering

Q1:

Consider the following circuit configuration
  1. common Emitter
  2. common Base
  3. emitter follower
  4. emitter follower using Darlington pair.
The correct sequence in increasing order of I/P impedance of these configuration:

A 2, 1, 4, 3

B 1, 2, 4, 3

C 2, 1, 3, 4

D 1, 2, 3, 4

ANS:B - 1, 2, 4, 3

Yes, agree, C is the correct answer.