Practice Small Signal Equivalent Circuits (44.6) - Common Collector and Common Drain Amplifiers - Part A

Practice: Small Signal Equivalent Circuits

Lesson 44.6Common Collector and Common Drain Amplifiers - Part A

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9 questions

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6 sample questions

Question 1.
What is the main function of a common collector amplifier?
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Think about where the input and output are connected.
Question 2.
Why do we bias a transistor?
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Consider what happens without biasing.
3Question 3.
What configuration does a common collector amplifier use?
- Emitter as output
- Base as output
- Collector as output
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Think about where the output signal is taken.
4Question 4.
True or False: The voltage gain of a common drain amplifier can be significantly less than 1.
- True
- False
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Recall the behavior of buffers.
Question 5.
Given a common collector amplifier with a known input resistance of 100 kΩ and an output load of 50 kΩ, calculate the expected output voltage when a 1 V input signal is applied.
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Consider how voltage divides between parallel resistances.
Question 6.
A MOSFET common drain amplifier has a transconductance of 2 mS. Calculate the output current if the gate voltage changes by 1 V.
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This uses the basic relationship with transconductance.

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