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+//Ex 3.10
+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<12 ; it is wide band filter");
+disp(fL,"Design values for high pass section with Ap1=2 & fL(Hz) :");
+Ap1=2;//band pass gain for high pass section
+C=0.033;//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
+Rf=2*R;//kohm
+Ri=2*R;//kohm
+disp(C,"Capacitance(micro F)");
+disp(R,"Resistance R(kohm)");
+disp(Rf,"Resistance Rf(kohm)");
+disp(Ri,"Resistance Ri(kohm)");
+disp(fH,"Design values for low pass section with Ap2=2 & fH(Hz) :");
+Ap2=2;//band pass gain for low pass section
+C=0.033;//micro F(have to choose C, 0.01<C<1)
+k=fL/fH;//scaling factor
+Rdash=0.2*R;//kohm
+Ri=2*Rdash;//kohm
+Rf=Ri;//kohm(for Ap2=2)
+disp(C,"Capacitance(micro F)");
+disp(Rdash,"Resistance Rdash(kohm)");
+disp(Rf,"Resistance Rf(kohm)");
+disp(Ri,"Resistance Ri(kohm)");
+disp("For design purpose use rounded value 10 kohm for Rf & Ri");