... possible applications of the vibrational energy harvester. A prototype of the Sustainable Energy Harvesting Technologies – Past, Present and Future 66 1.4.2 Four magnets vibrational generators ... 2010, pp. 207-211, Leuven, Belgium, December 1-3, 2010 Sustainable Energy Harvesting Technologies – Past, Present and Future 62 Fig. 6. Magnetic circuit model of a magnet using non-linear ... + Hp Hp Hp + Hc Sustainable Energy Harvesting Technologies – Past, Present and Future 68 mx(t)y(t)z(t)DpDek Fig. 12. Schematic representation of the vibrational...