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3 cards from this section. Quick, good the night before a test.
What is the purpose of linearization in circuit analysis?
Think about why engineers would want to simplify complex calculations.
Define the term Q-point.
Recall the context in which you usually refer to the Q-point.
What does linearization provide when analyzing a non-linear circuit?
Think about why we would want simpler calculations.
True or False: The operating point is the same as the maximum current in a circuit.
Focus on what the operating point actually signifies.
A BJT operates with a collector voltage of 5V and a base voltage that varies with a small signal of ±0.2V. Analyze this system using your knowledge of small signal analysis. How would you define the Q-point and linearize around it?
Identify the DC conditions carefully and remember to use derivatives for linearization.
If a small signal causes a change in the collector current to be approximately -20mA/V at the operating point, calculate the output voltage swing when the input small signal varies ±0.1V.
Apply the relationship between input, output, and small signal parameters accurately.
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