These cores are composed of a powdered alloy of about 50% nickel and 50% iron alloy. It has the highest saturation level of the powdered cores mentioned above. Saturation level is 15 kilogauss. Core loss is significantly lower than the core loss of powdered iron cores. Its high saturation level permit the smallest D.C biased inductors (assuming sufficiently small A.C. flux).

Core Types Used by Butler Winding