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//Example6.14 // to design a summing amplifier
clc;
clear;
close;
// the output of the summing amplifier is given by
//Vo = -R2*((VIa/RIa)+(VIb/RIb)+(VIc/RIc)+(VId/RId)); equation 1
// the equation given is
//Vo = -(3*VIa+12*VIb+15*VIc+18*VId); equation 2
// comparing equation 1 and 2
//R2/RIa = 3 ;
//R2/RIb = 12 ;
//R2/RIc = 15 ;
//R2/RId = 18 ;
// the feedback resistance R2= 270 K ohm
R2 = 270 ; // K ohm
RIa = R2/3 ;
disp('The value of resistance RIa is = '+string(RIa)+ ' K ohm ');
RIb = R2/12 ;
disp('The value of resistance RIb is = '+string(RIb)+ ' K ohm ');
RIc = R2/15 ;
disp('The value of resistance RIc is = '+string(RIc)+ ' K ohm ');
RId = R2/18 ;
disp('The value of resistance RId is = '+string(RId)+ ' K ohm ');
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