Assume ISD = 3 × 10−14 A for D1 and D2, ISQ = 10−13 A for Qn and Qp, and
βn = βp = 75. Let RL = 8 . The average power delivered to the load is to be 5 W.
The peak output voltage is to be no more than 80 percent of VCC, and the minimum
value of diode current ID is to be no less than 5 mA.