Preview of practice Biasing Description (32.1.4) - Common Source Amplifier (Part A)
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Biasing Description

Practice - Biasing Description

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is V_GS?

💡 Hint: Think about the voltages at the gate and source.

Question 2 Easy

Why is V_th important?

💡 Hint: Relate it to how MOSFETs function.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What condition must V_D satisfy to keep the MOSFET in saturation?

V_D < V_GS - V_th
V_D = V_th
V_D > V_GS - V_th

💡 Hint: Think about how saturation works.

Question 2

True or False: The gate current in a common source amplifier is significant.

True
False

💡 Hint: Consider the properties of the MOSFET.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a common source amplifier that requires a target I_DS of 2A. Determine suitable values for V_GS and V_th using K = 0.4 A/V^2.

💡 Hint: What rearrangements can you make to isolate V_th?

Challenge 2 Hard

Discuss the effects on output signal if V_GS is set too low, considering saturation conditions.

💡 Hint: How does low V_GS affect the amplifier's function?

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Reference links

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