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//Example6.10 // To determine the range of the differential voltage gain
clc;
clear;
close;
//R1 = 1 K ohm to 25 K ohm ;
R2 = 50 ; // K ohm
R3 = 10 ; // K ohm
R4 = 10 ; // K ohm
// the output of instrumentation amplifier is given by
//Vo = (R4/R3)*(1+(2*R2/R1))*(VI@-VI1);
// the differential voltage gain of the instrumentation amplifier can be written as
//Av = (Vo/(VI2-VI1)) = (R4/R3)*(1+(2R2/R1));
// For R1 = 1 K ohm the maximum differential voltage gain of the instrumentation amplifier is
R1 = 1 ; // K ohm
Av = (R4/R3)*(1+(2*R2/R1));
disp('the maximum differential voltage gain of the instrumentation amplifier is = '+string(Av)+ ' ');
// For R1 = 25 K ohm the mminimum differential voltage gain of the instrumentation amplifier is
R1 = 25 ; // K ohm
Av = (R4/R3)*(1+(2*R2/R1));
disp('the minimum differential voltage gain of the instrumentation amplifier is = '+string(Av)+ ' ');
disp(' the range of the differential voltage gain of the instrumentation amplifier is ');
disp(' 5 <= Av <= 101 ');
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