Practice Small Signal Analysis of Common Source Amplifier - 67.6 | 67. Multi-Transistor Amplifiers : Amplifier With Active Load (Part B) | Analog Electronic Circuits - Vol 3
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Knowledge

67.6 - Small Signal Analysis of Common Source Amplifier

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the purpose of using an active load in a common source amplifier?

💡 Hint: Consider how active components differ from passive ones.

Question 2

Easy

Define voltage gain in the context of amplifiers.

💡 Hint: Think about the relation between input and output signals.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary reason to use an active load in a common source amplifier?

  • To increase voltage gain
  • To decrease output resistance
  • To simplify design
  • To use less power

💡 Hint: Consider the main function of an amplifier.

Question 2

True or False: In a common source amplifier, both MOSFETs must operate in saturation for proper gain.

  • True
  • False

💡 Hint: Think about the operating regions of a MOSFET.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given the following parameters of a common source amplifier: \(g_m = 3 mS\), \(r_{ds1} = 2 k\Omega\), and \(r_{ds2} = 4 k\Omega\). Calculate the voltage gain and explain if the active load indeed increases the gain.

💡 Hint: Use the rules for parallel resistances to calculate equivalent resistance.

Question 2

Compare the impact of load line slopes on gain when switching from passive to active loading in a common source amplifier setup, offering numerical examples.

💡 Hint: Highlight you can compare directly by evaluating the slope characteristics.

Challenge and get performance evaluation