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authorpriyanka2015-06-24 15:03:17 +0530
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+//chapter 16
+//example 16.10
+//page 504
+clear all;
+clc ;
+//given
+Vo=10;//op voltage
+I2=1;//error amplifier ip bias current
+Vref=7.15;//V reference
+VR2=Vref;
+R2=Vref/I2;
+printf("\nR2=%.2f kohm,standard value 6.8 kohm",R2);R2=6.8;
+I2=Vref/R2;//mA
+R1=(Vo-Vref)/I2;
+printf("\nR1=%.1f kohm,standard value 2.7 kohm",R1);
+Vs=Vo+5;//for satisfactory opertation of pass Xtor
+I=25;//internal ckt current Istandby+Iref
+//internal power dissipation
+Pi=Vs*I;
+printf("\ninternal power dissipation=%d mW",Pi)
+//max power dissipation in series pass Xtor
+PDmax=1000;
+P=PDmax-Pi;
+printf("\nmax power dissipation in series pass transistor=%d mW",P)
+//maximum load current
+Ilmax=P/(Vs-Vo);
+printf("\nmaximum load current=%d mA",Ilmax);
+
+
+
+
+