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Analog ElectronicsActive Filters

A notch filter is designed primarily to?

  • AStrongly attenuate a narrow band around a selected frequency
  • BPass only DC and reject all AC
  • CAmplify every frequency equally
  • DGenerate a sinusoidal signal without input
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Correct Answer: A. Strongly attenuate a narrow band around a selected frequency
Explanation: A notch, or band-stop, filter produces strong rejection around a chosen frequency while passing frequencies on either side.
Reference: Standard analog electronics: notch filter
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