SYSTEM ZUR ERZEUGUNG VON WÄRME IN MAGNETISCHEN WECHSELFELDERN

摘要

A system for providing heating in an alternating magnetic field comprises a combination of particles (31, 32) wherein the first particles (31) are lossy heat producing particles, which have a preselected Curie temperature to provide self-regulating heating in the magnetic field, and the second particles (32) are non lossy particles which have high permeability which are not heat producing but which maintain the coupling of the magnetic circuit and the desired magnetic field focus and intensity through the area in which the first lossy particles (31) are positioned. When the first lossy particles (31) approach their Curie temperature and have declining permeability and would otherwise lose the desired coupling with the magnetic circuit, the second nonlossy particles (32) maintain the coupling of the magnetic circuit and the intensity of the magnetic field through the first lossy particles (31) to provide the desired field strength throughout the heating period.