at low flux densities. The equation has three loss components: hysteresis, residual, and eddy current, and it is given by where is the effective core loss resistance (ohms), is the material permeability, is the inductance (henrys), is the hysteresis loss coefficient, is the maximum flux density (gauss), is the residual loss coefficient, is the frequency (hertz), and e is the eddy loss coefficient. Steinmetz coefficients Losses in magnetic materials can be characterized by the Steinmetz coefficients, which however do not take into account temperature variability. Material manufacturers provide data on core losses in tabular and graphical form for practical conditions of use. See also Balun Magnetic-core memory Pole piece Toroidal inductors and transformers References External links Online calculator for ferrite coil winding calculations What are the bumps at the end of computer cables? How to use ferrites for EMI suppression via Wayback Machine by Murata Manufacturing Electromagnetic components Radio electronics Electromagnetic radiation Iron compounds