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clear//
//Variables
hie = 1.1 * 10**3 //hie (in ohm)
hre = 2.5 * 10**-4 //hre
hoe = 25.0 * 10**-6 //hoe (in mho)
RS = 10000.0 //Source resistance (in ohm)
hfe=50.0;beta=50.0;
rL = 1000.0 //ac.c load resistance (in ohm)
RB = 200.0 * 10**3 //Feedback resistor (in ohm)
RC = 5.0 * 10**3 //Collector resistance (in ohm)
//Calculation
rL = RC * RB / (RC + RB) //a.c. load resistance (in ohm)
Ai = hfe /(1 + hoe * rL) //Current gain
Ri = hie + hre * Ai * rL //Input resistance of the amplifier looking into the base (in ohm)
Av = Ai * rL / Ri //Voltage gain
RB1 = RB/(1 - (-17.4)) //Resistance (in ohm)
Ris = Ri * RB1 / (Ri + RB1) //Input resistance looking from source terminals (in ohm)
Avs = Av * Ris / (RS + Ris) //Voltage gain of the stage
//Result
printf("\n Ai is %0.2f \nAv is %0.2f \nAvs is %0.1f \nRi is %0.3f kilo-ohm.",Ai,Av,Avs,Ri*10**-3)
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