BJT Amplifiers - The Common-Base Amplifier
3 important questions on BJT Amplifiers - The Common-Base Amplifier
What is the main disadvantage of the common-base amplifier compared to the common-emitter and the emitter-follower amplifiers?
The main disadvantage of a common-base amplifier is low input impedance. Another disadvantage is unity current gain.
Find Rin(emitter), Av, Ai, and Ap for the unloaded amplifier in Figure 6–57.![]()
Antwoord
Match the following generalized characteristics with the appropriate amplifier configuration.
(a) Unity current gain, high voltage gain, very low input resistance
(b) High current gain, high voltage gain, low input resistance
(c) High current gain, unity voltage gain, high input resistanc
(a) Common-base
(b) Common-emitter
(c) Common-collector
(b) Common-emitter
(c) Common-collector
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