7.8: Questions


1. What is the effect as $$R_i$$ is increased in the circuit of Figure 7.5.1?

2. Does the load impedance play an appreciable role in setting the load current?

3. What is the effect as $$R_f$$ is decreased in the circuit of Figure 7.5.2?

4. In practical voltage-source circuits, the load impedance can be too small, forcing the op amp into current limiting with resulting distortion. Are there similar limits in the current-source circuits?

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