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+//Example 1_26
+clc;
+clear;close;
+
+//Given data: 
+Tj=125;//degreeC
+Ts=80;//degreeC
+theta_jc=0.7;//degree C/W
+theta_cs=0.4;//degree C/W
+//part (a)
+Pav1=(Tj-Ts)/(theta_jc+theta_cs);//W
+disp(Pav1,"(a) Average power loss in W")
+//part (b)
+Ts=50;//degreeC
+Pav2=(Tj-Ts)/(theta_jc+theta_cs);//W
+disp(Pav2,"(b) Permisible average power loss in W")
+rating_increase=(sqrt(Pav2)-sqrt(Pav1))/sqrt(Pav1)*100;//%
+disp(rating_increase,"Percentage increase in rating")