Preview of practice Defining Lower Cutoff Frequency (27.7.1) - Common Emitter Amplifier (contd.) (Part B)
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Defining Lower Cutoff Frequency

Practice - Defining Lower Cutoff Frequency

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the lower cutoff frequency?

💡 Hint: Think about the implications of gain on frequency.

Question 2 Easy

Define a coupling capacitor.

💡 Hint: Consider its role in amplifier circuits.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the impact of increasing the emitter resistor?

Increase gain
Decrease gain
No effect

💡 Hint: Think about the voltage gain formula discussed.

Question 2

True or False: Coupling capacitors can only be used with DC signals.

True
False

💡 Hint: Review their purpose in amplifier circuits.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design an amplifier circuit with given specifications targeting a specific lower cutoff frequency. Discuss how you would select component values and justify your decisions regarding R_E and C values.

💡 Hint: Use the formula for cutoff frequency to link R and C.

Challenge 2 Hard

You have an amplifier circuit where increasing R_E from 1kΩ to 10kΩ dramatically reduced gain. Provide a mathematical analysis of this scenario, including the implications of stability and what design considerations you recommend.

💡 Hint: Reflect on how changes in R_E affect the gain as described in class.

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Reference links

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