Effective magnetic parameters in the presence of hysteresis

Hysteresis-based effective parameters (I/sub eHys/ and A/sub eHys/) are described that are extracted from minor and major loop measurements, and are thus more suitable for computations involving these loops. For three commercial power ferrites, formulae are given for I/sub eHys/ and A/sub eHys/ of toroids with radius ratio k/sub r/ between 0.2 and unity.