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clear//
//Variables
RC = 4.0 * 10**3 //Collector resistance (in ohm)
RB = 40.0 * 10**3 //Base resistance (in ohm)
RS = 10.0 * 10**3 //Source resistance (in ohm)
hie = 1100.0 //hie (in ohm)
hfe = 50.0 //hfe
hre=0;hoe=0;dh=0;
//Calculation
RB2 = RB //Resistance (in kilo-ohm)
rL = RC * RB2 /(RC +RB2) //a.c. load resistance (in ohm)
Ai = -hfe //Current gain
Ri = hie //Input resistance of the amplifier looking into the base (in ohm)
Av = Ai * rL / Ri //Voltage gain
RB1 = RB/(1 - Av) //Resistance (in ohm)
Ris = Ri * RB1 / (Ri + RB1) //Input resistance looking from source terminals (in ohm)
Ro = "infinite" //Output resistance (in ohm)
Ros = rL //Output resistance of the stage (in ohm)
Avs = Av * Ris / (RS + Ris) //Voltage gain of the stage
//Result
printf("\n Voltage gain is %0.1f .\nInput resistance is %0.0f ohm.\nOutput resistance is %0.0f ohm.",Avs,Ris,Ros)
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