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+//Example 17_5 page no:838
+clc;
+k=500;
+f1=1000;
+f2=10000;
+L1=k/(%pi*(f2-f1));
+C1=(f2-f1)/(4*%pi*k*f1*f2);
+L2=C1*k^2;
+C2=L1/k^2;
+//calculating the T-section filter
+L11=16.68/2;//inductance of T-section filter is calculated wrongly in text book
+L11=L11;//converting to milliHenry
+disp("the value of T-section element is");
+disp(L11,"the inductance is (in mH)");
+C11=2*C1;
+C11=C11*10^6;//converting to microFarad
+disp(C11,"the capacitance is (in microFarad)");
+C2=0.0707;
+L2=3.57;
+disp(C2,"the shunt element capacitance is (in microFarad)");
+disp(L2,"the shunt element inductance is (in mH)");
+//calculating the pi-section filter
+C1=0.143;
+L1=16.68;
+C2=0.0707/2;
+L2=2*0.0358;
+disp("the value of pi seciton element is");
+disp(L11*2,"the inductance is (in mH)");
+disp(C11/2,"the capacitance is (in microFarad)");
+disp(C2,"the capacitance is(in microFarad)");
+disp(L2,"the inductance is (in mH)");
+//inductance of T-section filter is calculated wrongly in text book