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clear//
//Variables
VS = 24.0 //Source voltage (in volts)
RS = 500.0 //Series resistance (in ohm)
VZ = 12.0 //Zener Voltage (in volts)
IZmin = 3.0 //Minimum Zener current (in milli-Ampere)
IZmax = 90.0 //Maximum Zener current (in milli-Ampere)
rZ = 0.0 //Zener resistance (in ohm)
//Calculation
IS = (VS - VZ) / RS //Current through RS (in Ampere)
ILmax = IS - IZmin * 10**-3 //Maximum value of load Current (in Ampere)
RLmin = VZ / ILmax //Minimum value of Load resistance (in ohm)
//Result
printf("\n Minimum value of load resistance is %0.0f ohm.",RLmin)
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