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2 cards from this section. Quick, good the night before a test.
What is voltage gain?
Think about how much the input signal increases in the output.
What happens to output resistance when feedback is applied?
Consider what feedback aims to achieve.
What is the effect of feedback on amplifier output resistance?
Consider what feedback is designed to achieve in circuits.
True or False: Higher negative feedback increases the overall voltage gain.
Think about how feedback affects output signals.
Given a forward amplifier with a gain of 180 and a feedback factor of 0.05, what is the new gain?
Apply the concept of feedback effect on gain.
If the input resistance of a feedback amplifier is 4kΩ, and the feedback factor is 0.1, what is the expected new input resistance?
Multiply R by (1 + βA) and identify if changes occur.
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