Practice Small Signal Model Description (99.2.3) - Applications of feedback in amplifier circuits (Part-C)

Practice: Small Signal Model Description

Lesson 99.2.3Applications of feedback in amplifier circuits (Part-C)

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8 questions

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6 sample questions

Question 1.
What is feedback in electronic circuits?
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Think of it as a loop system.
Question 2.
Define trans-conductance.
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Look for a relationship between voltage and current.
3Question 3.
What is the purpose of feedback in amplifiers?
- To decrease gain
- To stabilize and improve performance
- To reduce output resistance
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Think about the overall effect it has on consistency.
4Question 4.
True or False: Trans-conductance is unrelated to the efficiency of a transistor.
- True
- False
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Remember its definition as a crucial efficiency metric.
Question 5.
Calculate the feedback factor (β) for a given amplifier circuit and discuss how it would affect the overall gain.
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Focus on the resistive components in the feedback network.
Question 6.
Examine a small signal model for an amplifier. What adjustments would you make if trans-conductance was increased?
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Consider the ratio of output current to input voltage.

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