9.121 In the multistage amplifier of Fig. 9.41, emitter resistors are to be introduced—100Ω in...

9.121 In the multistage amplifier of Fig. 9.41, emitter resistors are to be introduced—100Ω in the emitter lead of each of the first-stage transistors and 25Ω for each of the second-stage transistors. What is the effect on input resistance, the voltage gain of the first stage, and the overall voltage gain? Use the bias values found in Example 9.7.