FERRITE CORE INDUCTORS 



281 



1.30 



1.28 



.26 



1.24 



1.20 



Q 1.18 



5 1.12 



.06 



.04 



1.02 



.00 



0.34 0.36 0.38 0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.60 0.62 



P 



Fig. 7 — Effect of core proportions on dissipation factor when hysteresis loss 

 is predominate. 



This information is shown graphically in Fig. 7. It will be seen that 

 when the hysteresis losses are important both the post diameter and the 

 axial height should be about half of the overall diameter. These propor- 

 tions are not far different from those derived as optimum from (37). 

 This is fortunate since it means that cores of the same proportions will 

 be suitable in different applications regardless of which core losses pre- 

 dominate. 



