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diff --git a/181/CH3/EX3.22/example3_22.sce b/181/CH3/EX3.22/example3_22.sce
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+// DC output voltage and ripple voltage
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 3-22 in page 164
+
+clear; clc; close;
+
+// Given data
+C=4; // Capacitances in micro-F
+L=20; // Inductance choke in H
+Il=50*10^-6; // Load current in micro-A
+R=200; // Resistance of choke in ohm
+
+// Calculation
+Vdc=(300*sqrt(2))-((4170/C)*0.05)-(0.05*R);
+r=(3300*0.05)/(4*4*20*353);
+Vrms=r*Vdc;
+
+printf("(a)Output voltage = %0.2f V\n",Vdc);
+printf("(b)Ripple voltage = %0.3f V",Vrms);
+
+// Result
+// (a) Output voltage = 362.13 V
+// (b) Ripple voltage = 0.529 V
+\ No newline at end of file
diff --git a/181/CH3/EX3.22/example3_22.txt b/181/CH3/EX3.22/example3_22.txt
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+ (a)Output voltage = 362.14 V
+(b)Ripple voltage = 0.529 V 
+\ No newline at end of file