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clear//
//Variables
hie = 1500.0 //hie (in ohm)
hfe = 50.0 //hfe
hre = 50.0 * 10**-4 //hre
hoe = 20.0 * 10**-6 //hoe
R1 = 20.0 * 10**3 //Resistance (in ohm)
R2 = 10.0 * 10**3 //Resistance (in ohm)
RC = 5.0 * 10**3 //Collector resistance (in ohm)
RE = 1.0 * 10**3 //Emitter resistance (in ohm)
RL = 10.0 * 10**3 //Load resistance (in ohm)
RS = 0 //Source resistance (in ohm)
//Calculation
Ai = -hfe
rL = RC * RL /(RC + RL) //a.c. load resistance (in ohm)
Ri = hie //Input resistance (in ohm)
Ris = (R1*R2*Ri)/(Ri*R1 + Ri*R2 + R1*R2) //Input resistance of the amplified stage (in ohm)
Ro = 1 / hoe //Output resistance (in ohm)
Ros = Ro * rL /(Ro + rL) //Output resistance of the stage (in ohm)
Av = Ai * rL / Ri //Voltage gain
Avs = Av * Ris / (RS + Ris) //Voltage gain of the stage
Ais = Ai //Current gain of the stage
//Result
printf("\n Input resistance of the stage is %0.2f kilo-ohm.\nOutput resistance of the stage is %0.1f kilo-ohm.\nVoltage gain of the stage is %0.0f .\nCurrent gain of the stage is %0.3f .",Ris*10**-3,Ros*10**-3,Avs,Ai)
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