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+//Exa 5.14.11

+clc;

+clear;

+close;

+// Given data

+bita= 100;

+V_BEsat= 0.8;// in V

+V_CEsat= 0.2;// in V

+V_BEact= 0.7;// in V

+V_CC = 10;// in V

+R_E = 1;// in kΩ

+R_C = 2;// in kΩ

+R_B= 100;// in kΩ

+bita=100;

+alpha= bita/(1+bita);

+// Applying KVL to collector circuit

+// V_CC= I_Csat*R_C +V_CE +R_E*I_E

+// but I_E= alpha*I_Csat

+I_Csat= (V_CC-V_CEsat)/(R_C+R_E*alpha);// in mA

+I_Bmin= I_Csat/bita;// in mA

+// Applying KVL to base loop

+// V_CC= I_B*R_B +V_BEsat +I_E*R_E

+// but I_E= I_Csat+I_B

+I_B= (V_CC-V_BEsat-I_Csat*R_E)/(R_B+R_E);// in mA

+disp(I_B*10^3,"The value of I_B in µA is : ")

+disp(I_Bmin*10^3,"The minimum value of I_B in µA is : ")

+if I_B>I_Bmin then

+    disp("Since the value of I_B is greater than the value of I_Bmin, ")

+    disp("Hence the transistor is in saturation .")

+end

+I_E= (1+bita)*I_Bmin;// in mA

+R_E= (V_CC-V_BEact-I_Bmin*R_B)/I_E;// in kΩ

+disp(R_E,"The value of R_E in kΩ is : ")

+disp("So R_E should be greater than this value in order to bring the transistor just out of saturation ")

+