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+// Exa 5.2

+clc;

+clear;

+close;

+format('v',6)

+// Given data

+I_C = 10;// in mA

+I_C =I_C * 10^-3;// in A

+V_CE = 10;// in V

+V_T= 26*10^-3;// in V

+h_ie = 500;// in ohm

+h_oe = 4*10^-5;// in S

+h_fe  = 100;

+g_be = 1/260;

+h_re = 10^-4;

+f_T = 50;// in MHz

+f_T = f_T * 10^6;// in Hz

+T = 300;// in K

+Cob =3;// in pF

+Cob = Cob * 10^-12;// in F

+// (i) Transconductance

+g_m = I_C/V_T;// in A/V

+g_m= round(g_m*10^3);// in mA/V

+disp(g_m,"The Transconductance in mA/V is");

+// (ii) Input resistance

+g_m= g_m*10^-3;// in A/V

+r_be = round(h_fe/g_m);// in ohm

+disp(r_be,"The input resistance in ohm is");

+// (iii) Base spreading resistance 

+r_bb = h_ie - r_be;// in ohm

+disp(r_bb,"The base spreading resistance in ohm is");

+// (iv) The feedback conductance 

+format('e',8)

+g_bc = h_re*g_be;

+disp(g_bc,"The feedback conductance is");

+// (v) The output conductance 

+g_ce = h_oe - (1+h_fe)*g_bc

+disp(g_ce,"The output conductance is : ")

+// (vi) Capacitance

+format('v',6)

+Cbe= g_m/(2*%pi*f_T);// in F

+Cbe= Cbe*10^12;// in pF

+disp(Cbe,"The value of C_b''e in pF is : ")

+Cc= Cob;// in F

+Cc= Cc*10^12

+disp(Cc,"The value of Cc in pF is : ")