initial commit / add all books

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+//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.