8.26 Consider the CE amplifiers of Fig. 8.13(b) for the case of I = 0.5 mA, β = 100, and VA = 100 V. Find Rin, Avo, and Ro. If it is required to raise Rin by a factor of 5 by changing I, what value of I is required, assuming that β remains unchanged? What are the new values of A vo and Ro? If the amplifier is fed with a signal source having Rsig = 5 k and is connected to a load of 100-k resistance, find the overall voltage gain, v o/vsig.