R3 =Q/(π×fc×= 13/(π×1kHz×0.1µF) = 13/3.14×10-4 =41.40kΩ ≅41kΩ. 12. If the gain at center frequency is 10, find the quality factor of narrow band-pass filter
A. 1
B. 2
C. 3
D. None of the mentioned
Answer:A
R3 =Q/(π×fc×= 13/(π×1kHz×0.1µF) = 13/3.14×10-4 =41.40kΩ ≅41kΩ. 12. If the gain at center frequency is 10, find the quality factor of narrow band-pass filter
A. 1 B. 2 C. 3 D. None of the mentioned
Explanation: The gain of the narrow band-pass filter must satisfy the condition, AF= 2×Q2