(a) Calculate the sensitivity of the closed-loop input resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRinA = A/ Rin ∂Rin/ ∂A (b) Use this formula to estimate the percentage change in closed-loop input resistance if the openloop gain A changes by 10 percent for an ampliﬁer with A = 94 dB and β = 0.01. (c) Calculate the sensitivity of the closed-loop output resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRout A = A /Rout ∂Rout /∂A (d) Use this formula to estimate the percentage changeinclosed-loopoutputresistanceiftheopenloop gain A changes by 10 percent for an ampliﬁer with A =100 dB and β =0.01.

(a) Calculate the sensitivity of the closed-loop input resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRinA = A/ Rin ∂Rin/ ∂A (b) Use this formula to estimate the percentage change in closed-loop input resistance if the openloop gain A changes by 10 percent for an ampliﬁer with A = 94 dB and β = 0.01. (c) Calculate the sensitivity of the closed-loop output resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRout A = A /Rout ∂Rout /∂A (d) Use this formula to estimate the percentage changeinclosed-loopoutputresistanceiftheopenloop gain A changes by 10 percent for an ampliﬁer with A =100 dB and β =0.01.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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