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//chapter27
//example27.5
//page582
hie=1700 // ohm
hre=1.3d-4
hoe=6d-6 // mho
hfe=38
rL=2000 // ohm
Zin=hie-hre*hfe/(hoe+1/rL)
Ai=hfe/(1+hoe*rL)
Av=-hfe/(Zin*(hoe+1/rL))
printf("input impedence = %.3f ohm \n",Zin)
printf("current gain = %.3f \n",Ai)
printf("voltage gain = %.3f \n",-Av) // considering magnitude of Av,we neglect its negative sign and so we display -Av instead of Av
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