Practice Voltage Gain Calculation (47.3.4) - Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part A)

Practice: Voltage Gain Calculation

Lesson 47.3.4Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part A)

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8 questions

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6 sample questions

Question 1.
What does voltage gain represent in an amplifier?
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Think about how an amplifier enhances signals.
Question 2.
How is transconductance (g_m) calculated?
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Consider the currents and voltages related to the transistor.
3Question 3.
What is the formula for voltage gain?
- A_v = V_out / V_in
- A_v = V_in / V_out
- A_v = R_out / R_in
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Think about how the amplifier transforms the input signal.
4Question 4.
True or False: A voltage gain of 1 indicates no amplification.
- True
- False
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Remember what a buffer does to a signal.
Question 5.
Calculate the voltage gain and input impedance for a common collector amplifier given: β = 120, I_C = 1 mA, and r_o = 150 kΩ.
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Convert I_C to g_m first.
Question 6.
In a scenario where the load capacitance increases and source resistance is significant, analyze how this affects the bandwidth of the amplifier.
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Remember f_cutoff = 1 / (2πRC); how do varying R and C affect this?

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