Class B Amplifier

Question 1

What is a class B amplifier?

Answer 1

Has NPN and PNP and v in is connect to base of both

Question 2

How do you calculate if heat sink is needed?

Answer 2

1) θJA < (TJmax - TA)/Pd
2) if untrue then heat sink required
3) θJC + θCA < θJA to find θCA using θJA found in 1

Question 3

For a class B amplifier how do you find max efficiency?

Answer 3

Set A = Vs

Question 4

How do you find the power dissipated in the transistor?

Answer 4

Pd = Ps - Pl