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Discussion

An RC coupled amplifier has an open loop gain of 200 and a lower cutoff frequency of 50 Hz. If negative feedback with β = 0.1 is used, the lower cut off frequency will be

  • A.about 50 Hz
  • B.
    about 5 Hz
  • C.about 2.38 Hz
  • D.about 70.5 Hz

Answer: C

New lower cutoff frequency =  

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