initial commit / add all books

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+//Ex 3.11

+clc;clear;close;

+format('v',5);

+fL=200;//Hz

+fH=1*1000;//Hz

+Ap=4;//band pass gain

+BW=fH-fL;//Hz

+f0=sqrt(fH*fL);//Hz

+fc=sqrt(fH*fL);//Hz

+Q=fc/BW;//Quality factor

+disp(Q,"Quality factor");

+disp("As Q<10 ; it is wide band filter");

+disp(fH,"Design values for low pass section with Ap2=2 & fH(Hz) :");

+Ap2=2;//band pass gain for low pass section

+C=0.03;//micro F(have to choose C, 0.01<C<1)

+Rdash=1/(2*%pi*fH*C*10^-6)/1000;//kohm

+disp(C,"Capacitance(micro F)");

+disp(Rdash,"Resistance Rdash(kohm)");

+disp("Value of Resistance Rf & Ri can be choosen as 10 kohm for filter design.");

+disp(fL,"Design values for high pass section with Ap1=2 & fL(Hz) :");

+Ap1=2;//band pass gain for high pass section

+C=0.05;//micro F(have to choose C, 0.01<C<1)

+R=1/(2*%pi*fL*C*10^-6)/1000;//kohm

+RfBYRi=(Ap-1);//op-amp gain

+disp(C,"Capacitance(micro F)");

+disp(R,"Resistance R(kohm)");

+disp("Value of Resistance Rf & Ri can be choosen as 10 kohm for filter design.");