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-rwxr-xr-x69/CH8/EX8.13/8_13.sce26
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diff --git a/69/CH8/EX8.13/8_13.sce b/69/CH8/EX8.13/8_13.sce
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+clear; clc; close;
+
+yos = 30*10^(-6);
+Idss = 10*10^(-3);
+Idq = 10*10^(-3);
+Vp = -4;
+Vgsq = 0;
+Rg = 10*10^(6);
+Av = -15;
+Vdd = 30;
+
+gmo = 2*Idss/abs(Vp);
+gm = gmo;
+rd = 1/yos;
+
+//let x = Rd||rd
+x = -Av/gm;
+Rd = 100*10^(3)/30.33;//found by solving for x
+Vdsq = Vdd-Idq*Rd;
+Zi = Rg;
+Zo = Rd*rd/(Rd+rd);
+
+
+disp(Rd,'Rd(ohms) = ');
+disp(Zi,'Zi(ohms) = ');
+disp(Zo,'Zo(ohms) = ');