Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in____________?
Correct answer: C. Both Temperature & β
- A. Only the temperature
- B. only the β of the transistor
- C. Both Temperature & β
- D. None of the above
Explanation
The emitter resistor creates negative feedback: it counteracts changes in collector current caused by temperature or transistor beta variations. Hence it stabilizes the operating point against both effects.
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