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diff --git a/3515/CH6/EX6.12/Ex_6_12.sce b/3515/CH6/EX6.12/Ex_6_12.sce
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+// Exa 6.12
+format('v',7);
+clc;
+clear;
+close;
+// Given data
+L= 50;// in µH
+L= L*10^-6;// in H
+C1= 300;// in pF
+C1= C1*10^-12;// in F
+C2= 100;// in pF
+C2= C2*10^-12;// in F
+C_eq= C1*C2/(C1+C2);// in F
+f= 1/(2*%pi*sqrt(L*C_eq));// in Hz
+disp(f*10^-6,"Frequency of oscillations in MHz is : ")
+Bita= C2/C1;
+// (iii)
+// A*Bita >=1, so A*Bita= 1  (for sustained oscillations)
+Amin= 1/Bita;
+disp(Amin,"Minimum gain to substain oscillations is : ")
+