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Here I have two figures I have a few questions about using a gain block with two op-amps. Any help on any of the questions will be appreciated.
1) Figure 8.4, What portion of the output signal is being used in the feedback? And why would it be called the feedback factor?
2) Figure 8.4, what happens when R1 is shorted and what is the feedback factor? And R2 is shorted, then what is the feedback factor?
3) Figure 8.6, What are 2 estimates of amplifiers u's input resistance.
Here I have two figures I have a few questions about using a gain block with two op-amps. Any help on any of the questions will be appreciated.
1) Figure 8.4, What portion of the output signal is being used in the feedback? And why would it be called the feedback factor?
2) Figure 8.4, what happens when R1 is shorted and what is the feedback factor? And R2 is shorted, then what is the feedback factor?
3) Figure 8.6, What are 2 estimates of amplifiers u's input resistance.