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clear//
//Variables
hie = 1.0 * 10**3 //hie (in ohm)
hre = 1.0 * 10**-4 //hre
hoe = 100.0 * 10**-6 //hoe (in mho)
RC = 1.0 * 10**3 //Collector resistance (in ohm)
RS = 1000.0 //Source resistance (in ohm)
hfe=50.0;beta=50.0;
//Calculation
rL = RC //a.c. load resistance (in ohm)
Ai = -hfe /(1 + hoe * rL) //Current gain of a transistor
Ri = hie + hre * Ai * rL //Input resistance looking directly into the base (in ohm)
Ris = Ri //Iput resistance of the amplified stage (in ohm)
dh = hie * hoe - hre * hfe //Change in h
Ro = (RS + hie)/(RS * hoe + dh) //Output resistance looking directly into collector (in ohm)
Ros = Ro * rL /(Ro + rL) //Output resistance of the amplified stage (in ohm)
Ais = Ai * RS / (RS + Ris) //Current gain of amplified stage
Av = Ai * rL / Ri //Voltage gain of transistor
Avs = Av * Ris / (RS + Ris) //Voltage gain of amplified stage
//Result
printf("\n Input resistance of the amplifier stage is %0.0f ohm.\nOutput resistance of amplifier stage is %0.0f ohm.\nCurrent gain of amplified stage is %0.1f \nVoltage gain of amplifier stage is %0.1f .",Ris,Ros,Ais,Avs)
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