a) What is the voltage gain of the common-emitter amplifier shown below? Assume BF = 100, VA = 75V. b) What is the maximum value of vi that satisfies the small-signal assumptions? c) Compare the voltage gain to the common-emitter "rule-of-thumb" gain estimate and the "intrinsic gain" of the transistor. V 30 k HH 10 k UB Re 4.3 k UC VE R 1,5 www.l +Vcc = 12 V 100 k R Vo