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+// Example 7.7
+format('v',5)
+clc;
+clear;
+close;
+// given data
+V_B= 1.8;// in V
+V_E= 1.1;// in V
+V_TH= 200*10^-3;// in V
+I_E= 1*10^-3;// in A
+r_e= 2.5;//in Ω
+bita=200;
+V_CC= 10;// in V
+R_C= 5*10^3;// in Ω
+R_E= 430;// in Ω
+R_L= 1*10^3;//in Ω
+I_C= I_E;// in A
+// The collector voltage,
+V_C= V_CC-I_C*R_C;// in V
+V_E= 4.3;// in V
+// The emitter current,
+I_E= V_E/R_E;// in A
+// The base current,
+I_B= I_E/bita;// in A
+// The load resistance,
+r_L= R_E*R_L/(R_E+R_L);// in Ω
+Zin= bita*(r_L+r_e);// in Ω
+Vin= Zin*V_TH/(R_C+Zin);// in V
+// The ac output voltage
+Vout= r_L*Vin/(r_L+r_e);//in V
+Vout= Vout*10^3;// in mV
+disp(Vout,"The ac output voltage in mV is : ")