Practice Small Signal Parameters Consistency (47.4.3) - Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part A)

Practice: Small Signal Parameters Consistency

Lesson 47.4.3Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part A)

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9 questions

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6 sample questions

Question 1.
What is the formula for voltage gain?
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Remember it's about the ratio of output to input.
Question 2.
Why is high input impedance desired?
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Think about how one circuit affects another.
3Question 3.
What defines the voltage gain in an amplifier?
- Output Voltage / Input Voltage
- Input Voltage / Output Voltage
- Collector Current / Emitter Current
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Focus on the ratio that indicates amplification.
4Question 4.
True or False: A high output impedance is generally desirable for an amplifier.
- True
- False
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Consider how amplifiers interact with other circuits.
Question 5.
Design a common collector amplifier with a target voltage gain of nearly 1. Calculate the necessary input and output impedance if the collector current must be 1 mA.
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Think through the dependent relationships of gain, resistances, and small signal models.
Question 6.
Given a source resistance of 100 kΩ and an input capacitance of 10 pF, calculate how it affects the upper cutoff frequency if connected to a load of 50 Ω.
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Don’t forget to include total resistance in your upper cutoff frequency calculations.

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