1 files changed, 55 insertions, 0 deletions
diff --git a/929/CH2/EX2.9/Example2_9.sce b/929/CH2/EX2.9/Example2_9.sce
new file mode 100755
index 000000000..b4fa9815f
--- /dev/null
+++ b/929/CH2/EX2.9/Example2_9.sce
@@ -0,0 +1,55 @@
+//Example 2.9
+
+clear;
+
+clc;
+
+R1=10*10^3;
+
+R3=R1;
+
+R2=100*10^3;
+
+R4=R2;
+
+p=0.01;
+
+emax=4*p;
+
+Adm1=R2/R1;
+
+Adm2n=emax*(R1+2*R2);
+
+Adm2d=2*(R1+R2);
+
+Adm2=1-(Adm2n/Adm2d);
+
+Admin=Adm1*Adm2;
+
+Acmax=(R2/(R1+R2))*emax;
+
+cmrrm=20*log10(Admin/Acmax);
+
+printf("(a) CMRR min=%.1f dB",cmrrm);
+
+//2.9(b)
+
+vdm=0;
+
+vcm=10;
+
+vO=vcm*Acmax+vdm*Admin;
+
+printf("\n(b) Output Error vO=%.3f V",vO);
+
+//2.9(c)
+
+//CMRR=20*log((1+(R2/R1))/emax) -> 80=20*log((1+(R2/R1))/emax) -> 4=log((1+(R2/R1))/emax) ->10^4=(1+(R2/R1))/emax -> emax=10^4/(1+(R2/R1))
+
+emax1=(1+(R2/R1))/(10^(4));
+
+p=emax1/4;
+
+pper=p*100;
+
+printf("\n(c) Required Resistance Tolerance=%.4f percent",pper);
+\ No newline at end of file