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+//Find (a) the overall voltage-gain ratio
+//Av ¼ vL=vS and (b) the overall current-gain ratio Ai ¼ iL=iS.
+//Example 6.27 page no 194
+clear
+clc
+hfb1=-0.99
+hfc2=-100
+Rb=33.3*10^3
+Re1=5*10^3
+Re2=2*10^3
+Rl=2*10^3
+hic2=500
+hib1=50
+hic2=500
+Av1=-((hfb1*Rb*hic2)/(hib1*(Rb+hic2)))
+Av2=0.995
+Av=Av1*Av2
+printf("\n The value of Av1=%0.3f " ,Av1)
+printf("\n The value of Av1=%0.3f " ,Av)
+Ai1=-((hfb1*Re1*Rb)/((Re1+hib1)*(Rb+hic2)))
+printf("\n The value of Ai1=%0.3f " ,Ai1)
+Ai2=-((hfc2*Re2)/(Re2+Rl))
+printf("\n The value of Ai2=%0.3f " ,Ai2)
+Ai=Ai1*Ai2
+printf("\n The value of Ai=%0.3f " ,Ai)