Preview of practice Finding Drain Resistance (34.1.6) - Common Source Amplifier (contd.) Numerical examples and design guidelines (Part B)
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Finding Drain Resistance

Practice - Finding Drain Resistance

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the role of bias resistors in a common source amplifier?

💡 Hint: Think about what voltage needs to be applied at the gate.

Question 2 Easy

Define threshold voltage.

💡 Hint: What happens when VGS is below this value?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the approximately calculated value of RD using Vdd = 12V, VGS = 2V, and IDS = 0.5 mA?

11 kΩ
6 kΩ
5 kΩ

💡 Hint: Apply the formula for RD.

Question 2

True or False: Increasing the bias current will always lead to a higher output swing.

True
False

💡 Hint: Consider how changes in current can affect range.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a common source amplifier for a desired output voltage swing of +/- 3V using Vdd = 12V and a threshold voltage of 1V. Determine the values of R1, R2, and RD.

💡 Hint: Break down the design based on maintaining balance around the center voltage.

Challenge 2 Hard

What will happen to the output gain if RD is increased without changing VGS? Explain and calculate.

💡 Hint: Look into the effects on gain per the transistor’s equations to fully understand this.

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Reference links

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