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diff --git a/2444/CH4/EX4.23/ex4_23.sce b/2444/CH4/EX4.23/ex4_23.sce
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+// Exa 4.23
+clc;
+clear;
+close;
+format('v',5)
+// Given data
+V_GS = -1.0;// in V
+V_DS = 4.0;// in V
+I_DS = 1;// in mA
+I_DS = I_DS * 10^-3;// in A
+I_G = 0;// in A
+R_G = 500;// in k ohm
+R_G = R_G * 10^3;// in ohm
+V_DD = 10;// in V
+V_DS = 4;// in V
+V_G = I_G*R_G;// in V
+Vs = V_G-V_GS;// in V
+R_S = Vs/I_DS;// in ohm
+R_S= R_S*10^-3;// in k ohm
+disp(R_S,"The value of R_S in k ohm is");
+R_S= R_S*10^3;// in ohm
+// V_DD = I_DD*R_D + V_DS+ I_DS*R_S = I_DS*(R_D+R_S) + V_DS
+R_D = ((V_DD-V_DS)/I_DS)-R_S;// in ohm
+R_D = R_D * 10^-3;// in k ohm
+disp(R_D,"The value of R_D in k ohm is");