//Exa 5.2 clc; clear; close; //Given data : A=1000;//gainWithoutFeedback(unitless) //Part (i) : disp("At normal collector supply :"); disp("with feedback gain reduces by a factor 0.40"); Af=A-A*0.40;//gainWithFeedback(unitless) disp(Af,"At normal collector supply, Gain with feedback : "); //Formula : Af=A/(1+A*Beta) Beta=(A/Af-1)/A;//feedback factor (unitless) disp("At reduced power supply :"); Adash=800;//gainWithoutFeedback(unitless) Af_dash=Adash/(1+Adash*Beta) disp(round(Af_dash),"At Reduced collector supply, Gain with feedback : "); //Part (ii) Reduction=((A-Adash)/A)*100;//% reduction without feedback disp(Reduction,"percentage reduction in gain without feedback(%) :"); Reduction1=((Af-Af_dash)/Af)*100;//% reduction without feedback disp(round(Reduction1),"percentage reduction in gain with feedback(%) :"); //Note : answer of Af is wrong in the book.