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4 cards from this section. Quick, good the night before a test.
What happens to an amplifier's gain when a negative feedback network is introduced?
Think about how adding feedback would affect the signal being amplified.
Define a Bode plot in the context of amplifiers.
Consider what components are plotted on the axes.
What is the primary effect of negative feedback on amplifier gain?
Consider how feedback is used to control system output.
Is it true that feedback can alter the stability of an amplifier?
Think about what feedback does to the output signal.
An amplifier has a pole at p = 1 kHz. After introducing a feedback factor β = 0.1, what is the new pole location?
Plug in the values directly into the equation.
For an amplifier with one pole at p = 1 kHz and feedback that maintains β less than 1, explain how the stability bandwidth changes.
Consider how reduction in gain can influence the frequency stability.
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