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+// Example 4.2: Region of operation, All the node voltages and currents
+clc, clear
+betaf=100; // Current gain
+disp("Let us assume that the transistor is in active region.");
+VBE_active=0.7; // in volts
+// From the equivalent circuit in Fig. 4.18(b)
+VCC=10; // in volts
+VBB=4; // in volts
+RE=3.3e3; // in ohms
+RC=5e3; // in ohms
+VE=VBB-VBE_active; // in volts
+// Writing KVL for base emitter loop and putting Ic= βF*Ib
+IB=VE/((1+betaf)*RE); // in amperes
+IB=IB*1e3; // in miliamperes
+IC=betaf*IB; // in miliamperes
+IE=IB+IC; // in miliamperes
+VC=VCC-IC*RC*1e-3; // in volts
+disp(VC,"VC (V) =");
+disp(VE,"VE (V) =");
+disp(VBB,"VB (V) =");
+disp(IC,"IC (mA) =");
+disp(IE,"IE (mA) =");
+disp(IB,"IB (mA) =");
+disp("Since the base is at 4 V and the collector is at 5.05 V, so the collector junction is reverse biased by 1.05 V. The transistor is indeed in forward active region as assumed.")
+\ No newline at end of file