Physics - Semiconductors Question with Solution | TestHub
When an n-p-n junction transistor is used as an amplifier in common emitter mode,
Options:
Answer:
Solution:
In a common emitter (CE) amplifier using an n-p-n transistor, the emitter terminal is common to both the input and output circuits.
The input signal is applied across the base-emitter junction, which is forward biased, resulting in a low input impedance.
The output is taken across the collector-emitter junction, which is reverse biased, resulting in a high output impedance.
Additionally, there is a phase reversal of between the input and output voltages in the CE configuration.
Thus, the input signal is applied between the base and emitter, and the output is obtained between the collector and emitter.
Answer: input signal is applied between the base and emitter and the output is obtained between collector and emitter.
