Preview of practice Small Signal Analysis (32.1.7) - Common Source Amplifier (Part A)
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Small Signal Analysis

Practice - Small Signal Analysis

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Practice Questions

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Question 1 Easy

What is the function of the common source amplifier?

💡 Hint: Think about what an amplifier does.

Question 2 Easy

Why do we use DC biasing in MOSFETs?

💡 Hint: Consider the role of biasing.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main function of a common source amplifier?

Current amplification
Voltage amplification
Power amplification

💡 Hint: Consider what is commonly amplified in analog circuits.

Question 2

True or False: AC signals affect the DC bias in a common source amplifier circuit.

True
False

💡 Hint: Review the role of biasing.

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Challenge Problems

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Challenge 1 Hard

A common source amplifier has a transconductance of 1.5mS and is biased at 2V. For an input signal of 4V, find the output current when the threshold voltage is 1.5V.

💡 Hint: Use the small signal current equation discussed.

Challenge 2 Hard

Design a common source amplifier circuit using an N-channel MOSFET to achieve a voltage gain of 10 while ensuring the MOSFET operates in the saturation region. Specify appropriate values for resistances.

💡 Hint: Consider the resistor values that could yield a gain of 10 while respecting DC bias calculations.

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