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clear//
//Variables
VZ = 10.0 //Zener voltage (in volts)
VSmin = 13.0 //Minimum source voltage (in volts)
VSmax = 16.0 //Maximum source voltage (in volts)
ILmin = 10.0 //Minimum load current (in milli-Ampere)
ILmax = 85.0 //Maximum load current (in milli-Ampere)
IZmin = 15.0 //Minimum zener current (in milli-Ampere)
//Calculation
RSmax = (VSmin - VZ)/ (IZmin + ILmax) //Maximum value of RS (in kilo-ohm)
IZmax = (VSmax - VZ)/ RSmax - ILmin //Maximum zener current (in milli-Ampere)
PZmax = IZmax * 10**-3 * VZ //Maximum power dissipation in zener (in watt)
//Result
printf("\n Maximum value of RS is %0.3f ohm.\nMaximum power dissipation be the zener diode is %0.3f W.",RSmax*10**3,PZmax)
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