The circuit is not missing any values they are to be designe

The circuit is not missing any values, they are to be designed.

How much average power is drawn from the supply on the output side when amplifying at maximum power? Use instantaneous power graphs to do your calculation. How much power is thus wasted in the transistors (each) on the output side?? Determine the average power losses per transistor on the input side (IBVBE)? Use instantaneous power graphs to do your calculation What are the biasing power losses on the input side? Assume that the diodes drop 0.7 V across them when on. Calculate the power efficiency of the circuit, neglecting input signal. Now draw the ac input resistance equivalent of the input side. Assume that input capacitors and diodes do not influence this. Check if re would have an effect, using average output current per transistor as I

Solution

power output = Vo² / Rl

Vo= -.7 -.7 -.7 = -2.1V

POWER OUTPUT = 4.41/ Rl

average power loss = Vbe * Ib/4

efficiency = output power/ input power

= 47.8 %