For an integrating circuit to be effective , the RC product should be____________ the time period of the input wave?
Correct answer: D. At least 10 times greater than
- A. 5 times greater than
- B. 5 times smaller than
- C. Equal to
- D. At least 10 times greater than
Explanation
An RC integrator requires the capacitor voltage to change slowly compared with the input waveform, so the time constant must be much larger than the period, conventionally at least 10 times greater. This makes the circuit respond to the accumulated area of the input.
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