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Is the impedance of CM choke for differential noise will be 1.5 times as that of CM noise.


For example, CM inductance is of 47uH then the differential mode inductance will be 47uH + (47uH/2) = 47 + 23.5 = 70.5uH


This is because for DM noise the CM inductance should be splitted between two equal halves.


Is this analysis correct?


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