[SOLVED] Permeability of Cores

[sabu31]

Dear All,

I need to use toroidal cores for various applications such as power factor correction, common mode chokes. The cores are coming in permeability values of 26u, 60u, 75u ,125u. What is preferred for what current levels. Generally i have seen 60u is being used for current level at 15A -30. Is there any criteria for this. Thanks & Regards,

 

[D.A.(Tony)Stewart]

Sounds right in general to avoid excess losses or saturation.

26µ for higher (f, power or current) > 30A
125µ for the opposite < 10A