1.17 (a) Model the three-stage amplifier of Fig. 1.17 (without the source and load), using the voltage amplifier model of Fig. 1.16(a). What are the values of Ri, Avo, and Ro?
(b) If RL varies in the range 10 Ω to 1000 Ω, find the corresponding range of the overall voltage gain, vo/vs.
1 MΩ, 900 V/V, 10 Ω; 409 V/V to 810 V/V