# 12.8: Questions


1. What is the effect as $$V_{control}$$ is increased?

2. Is the control/gain relationship linear?

3. What is the purpose of the second op amp in Figure 12.5.1?

4. Explain how the control signal “leaks” into the output signal if the circuit is not nulled properly.

5. Based on Graphs 2 and 3, does this circuit appear to be a good candidate for an amplitude modulator?

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