initial commit / add all books

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diff --git a/1754/CH5/EX5.8/Exa5_8.sce b/1754/CH5/EX5.8/Exa5_8.sce
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+//Exa 5.8

+clc;

+clear;

+close;

+//Given data :

+A=10000;//gain without feedback(unitless)

+Zi=10;//in kOhm

+Zo=100;//in Ohm

+R1=2;//in Ohm

+R2=18;//in Ohm

+//Part (i) :

+Beta=R1/(R1+R2);//feedback fraction(unitless)

+disp(Beta,"(i) Feedback Fraction :");

+//Part (ii) :

+Af=A/(1+A*Beta);//Gain with negative feedback(unitless)

+disp(round(Af),"(ii) Gain with negative feedback :");

+//Part (iii) :

+inputVoltge=0.5;//in mV

+outputVoltge=Af*inputVoltge;//in mV

+disp(round(outputVoltge),"(iii) Output Voltage in milli volts :");

+//Part (iv) :

+Zif=Zi*(1+Beta*A);//in kOhm

+disp(Zif*10^-3,"(iv) Input impedance of feedback amplifier in Mohm : ");

+//Part (v) :

+Zof=Zo/(1+Beta*A);//in kOhm

+format('v',4);

+disp(Zof,"(v) Output impedance with feedback in Ohm : ");
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