Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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The voltage gain of an amplifier is described by
A(s)= 4π2 ×1018s2 / (s+200π)(s+2000π)(s+2π ×106)(s+2π ×107)
(a) What are the mid-band gain and upper- and lower-cutoff frequencies of this amplifier? (b) If this amplifier is used in a feedback amplifier with a closed-loop gain of 100 , what are the upper-and lower-cutoff frequencies of the closed-loop amplifier? (c) Repeat for a closed-loop gain of 40.
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