initial commit / add all books

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+// Exa 5.31

+clc;

+clear;

+close;

+format('v',6)

+// Given data

+L = 100;// in µH

+L = L * 10^-6;// in H

+A=10;

+C1 = 0.001;// in µF

+C1 = C1 * 10^-6;// in F

+C2 = 0.01;// in µF

+C2 = C2 * 10^-6;// in F

+C = (C1*C2)/(C1+C2);// in F

+f = 1/(2*%pi*sqrt( L*C ));// in Hz

+f = round(f * 10^-3);// in kHz

+disp(f,"The operating frequency in kHz is");

+Beta = C1/C2;// feedback fraction

+disp(Beta,"The feed back fraction is");

+//Minimum gain to sustain oscillations, Amin*Beta = 1;

+Amin = 1/Beta;

+disp(Amin,"The minimum gain to sustain oscillation is");

+// A = R_C/R_E;

+R_C = 2.5;// in ohm

+R_E = R_C/A;// in ohm

+disp(R_E,"The emitter resistance in ohm is");