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+//Ex 3.13

+clc;clear;close;

+format('v',6);

+fH=100;//Hz

+fL=1*1000;//Hz

+disp("This filter is a combination of -:");

+disp("High pass filter having fH=100 Hz");

+disp("Low pass filter having fL=1 kHz");

+disp("And a summing amplifier");

+//High pass filter

+disp("Design values 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

+Ap=2;//assumed

+//Rf=Ri;//for gain=2

+Rf=10;//kohm(assumed)

+Ri=10;//kohm(assumed)

+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.");

+//Low pass filter

+disp("Design values for low pass section :");

+C=0.1;//micro F(have to choose C, 0.01<C<1)

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

+Ap=2;//assumed

+//Rfdash=Ridash;//for gain=2

+Rf_dash=10;//kohm(assumed)

+Ri_dash=10;//kohm(assumed)

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

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

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