| Basics of
Feedback |
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| • | Block diagram of |
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| feedback
amplifier |
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| • | Forward gain, A |
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| • | Feedback, B |
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| • | Summing junction, |
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| ∑ |
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| • | Useful for
oscillators |
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| + |
| ∑ |
| A |
| vout |
| - |
| vF |
| B |
