A class AB output stage using a two-diode bias network as shown in Fig. 12.14 utilizes diodes having the same junction area as the output transistors. For VCC =10 V, IBIAS = 1 mA, RL =100Ω, Βn =50, and /VCEsat / =0 V, what is the quiescent current? What are the largest possible positive and negative output signal levels? To achieve a positive peak output level equal to the negative peak level, what value of βN is needed if IBIAS is not changed? What value of IBIAS is needed if βN is held at 50? For this value, what does IQ become?
