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//Example 13.4
clear;
clc;
Kv=10^4;
wx=10^3;
pm=45;
wz=wx;
wp=(wz^2)/Kv;
C=0.1*10^(-6);
R2=1/(wz*C);
R1=(1/(wp*C))-R2;
printf("(a) Designed Passive Lag-Lead Filter :");
printf("\n R1=%.2f kohms",R1*10^(-3));
printf("\n R2=%.2f kohms",R2*10^(-3));
printf("\n C=%.1f uF",C*10^6);
wxact=1.27*10^3;
T=(1+(%i*(wxact/wz)))/(((%i*wxact)/Kv)*(1+((%i*wxact)/wp)));
Tang=((180/%pi)*atan(imag(T)/real(T)))-180;
PMact=180+Tang;
printf("\n\n(b) Actual Value of wx=%.2f krad/s",wxact*10^(-3));
printf("\n Actual Phase Margin (PM)=%.f deg",PMact);
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