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//Tested on Windows 7 Ultimate 32-bit
//Chapter 3 Semiconductor Diodes and Miscellaneous Devices Pg no. 97
clear;
clc;
//Given Data
//From Figure 3.28
V=15;//value of voltage source in volts
Vz=10;//zener breakdown voltage in volts
Rs=300;//series resistance R in ohms
Rp=900;//shunt resistance R' in ohms
Izmax=10;//maximum zener current in milli-amperes
//Solution
//Assuming ideal diode Vz=12V and Rz=0 ohms
Vrs=V-Vz;//voltage across resistor in volts
Irs=Vrs/Rs*1000;//current through resistor R in milli-amperes
Irp=Vz/Rp*1000;//current through resistor R' in milli-amperes
Iz=Irs-Irp;//current through diode in milli-amperes
if Iz<Izmax then
printf("The diode is properly biased.\n");
else printf("The diode is not biased properly.\n");
end
Pd=Vz*Iz;//power dissipation in milli-watts
printf("The dissipated power = Pd = %.1f mW",Pd);
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