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+// Example 3.15: (a) Series resistance
+//               (b) Power dissipation rating of zener diode
+clc, clear
+// In Fig. 3.38
+Vz=6; // in volts
+ILmin=0;
+ILmax=0.5; // in amperes
+Vmin=8; // in volts
+Vmax=10; // in volts
+Izmin=0;
+
+disp("Part (a)");
+Rs=(Vmin-Vz)/(ILmax+Izmin); // Series resistance in ohms
+disp(Rs,"Series resistance (Ω) =");
+
+disp("Part (b)");
+Izmax=((Vmax-Vz)/Rs)-ILmin; // in amperes
+Pzmax=Vz*Izmax; // in watts
+disp(Pzmax,"Power dissipation rating of zener diode (W) =");
+\ No newline at end of file