Problem:
1. For the circuit in Figure, called a bootstrapped follower:
(a) Find the dc emitter current and gm, re, and rπ . Use β=100.
(b) Replace the BJT with its T model (neglecting ro), and analyze the circuit to determine the input resistance Rin and the voltage gain vo/vsig.
(c) Repeat (b) for the case when capacitor CB is open-circuited. Compare the results with those obtained in (b) to find the advantages of bootstrapping
