Analog Electronics

Q1: Consider the following statements
A totem pole configuration used in the output stage if an op-amp has the advantage of using
  1. Only n-p-n BJTs
  2. Complementary symmetrical pair of transistors
  3. Only one transistor
Which of these statements is/are correct?

A 1 alone

B 2 alone

C 3 alone

D 1 and 3

ANS:A - 1 alone

May anyoneau explain this? please.



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