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+// Example 4.6;  Design of given circuit to obtain I_D=0.5mA and V_D=3V
+// MOSFET is in saturation
+V_DD=5; // (V)
+V_D=3; // (V)
+I_D=0.5*10^-3; // (A)
+V_t=-1; // (V)
+K=1*10^-3; // K=k'_n(W/L)
+V_OV=sqrt(2*I_D/K);
+V_GS=V_t+(-V_OV)
+R_D=V_D/I_D;
+V_Dmax=V_D-V_t; // - sign as magnitude of V_t is considered
+R_D=V_Dmax/I_D;
+disp(R_D,"R_D (ohm)")
+\ No newline at end of file