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3 cards from this section. Quick, good the night before a test.
What is the role of feedback in amplifiers?
Think about stability.
Define a pole in the context of frequency response.
What happens to gain at specific frequencies?
What effect does feedback have on amplifier stability?
Consider the relationship between feedback and stability.
True or False: Poles indicate frequencies where gain increases.
Recall what happens to gain at poles.
Given an amplifier with a pole at -2+j4 and a feedback factor of 0.1, calculate the new pole location after feedback.
Substitute the current location and feedback value in the formula.
A two-pole system has poles at -1 and -10. If a feedback network applies a β value of 0.5, analyze the impact on the response characteristics.
Calculate each pole's new position and analyze stability.
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