5. (25%) Consider the voltage amplifier of Fig. 5 with two BJT devices: Q1 and Q2, having β= 100
when they are biased in the active region. The coupling capacitors C can block DC component and pass
AC component. The voltage supplies are 10 V and the thermal voltage VT = 25.9 mV. The constant
voltage drop 0.7 V approximation can be used for the turn-on of a p-n junction. In addition, other
resistances are also included in the Fig. 5. Please come out the following parameters: (a) DC base voltage
of Q1:, (b) DC base voltage of Q2: , (c) DC collector voltage of Q2: . (d) overall AC voltage
gain. (5%, 5%, 5%, 10%)