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+// Chapter8
+// Design  a step down regulator
+// Page.No-288
+// Example8_6
+//Figure 8.27
+// Given
+clear;clc;
+Vout=12;            //in V
+R2=10000;          //in Ohm        (Assumption)
+R1=R2*(Vout-1);
+printf("\n Value of R1 is = %.f Ohm\n",R1); // Result
+Isw=0.75;               //in Amp
+R3=0.11/Isw;
+printf("\n Value of R3 is = %.2f Ohm\n",R3); // Result
+Iout=0.200;         //in Amp
+Df=0.2;
+delI =2*Iout*Df;
+printf("\n Value of del I is = %.3f Amp\n",delI); // Result
+F=50000;           //in Hz
+Vin=20;         //in V
+L1=Vout*(Vin-Vout)/(delI*Vin*F);
+printf("\n Value of L1 is = %.4f H\n",L1); // Result
+Vripple=0.040;      //in V
+C2=Vout*(Vin-Vout)/(8*F^2*Vin*Vripple*L1);
+printf("\n Value of C2 is = %.6f F\n",C2); // Result
+//C2 is ste a standard of 33microF or 47microF