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+// chapter 8
+// example 8.20
+// Compute the value of commutating capacitance and transformer inductances
+// page-499
+clear;
+clc;
+// given
+Edc=60; // in V (dc source)
+I0_m=140; // in A (load current)
+t_q=20; // in us
+g=4;
+// calculate
+t_q=t_q*1E-6; // changing unit from us to s
+Rm=Edc/I0_m;
+// since g=(1/Rm)*sqrt(L1/C) and t_q=sqrt(L1*C),
+// Multiplying both these equations we get g*t_q=(1/Rm)*L1 or we get
+L1=g*t_q*Rm; // calculation of transformer inductance L1
+C=t_q^2/L1; // calculation of commutating capacitance
+L2=L1; // calculation of transformer inductance L2
+printf("\nThe commutating capacitance is \t C=%.2f uF",C*1E6);
+printf("\nThe transformer inductances is \t L1=%.1f uH \t L2=%.1f uH",L1*1E6, L2*1E6);
+// Note: the answers vary slightly due to precise calculation
+\ No newline at end of file