11.48. Determine the output impedance of the emitter follower depicted in Fig. 11.88, including $C_\mu$ and other capacitances. Sketch $|Z_{out}|$ as a function of frequency. Assume $V_A = \infty$.
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Step 1: The output impedance of the emitter follower can be determined by considering the impedance of the transistor Q1 and the impedance of the load connected to the output. Show more…
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Show that the impedance Z: a. For purely resistive is Z = R b. For purely inductive is Z = jX c. For purely capacitive is Z = -jX
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