PRIMARY SIDE CORE OF TRANSFORMER FOR CONTACTLESS ENERGY TRANSMISSOIN SYSTEM

摘要

PURPOSE: To make it possible to suppress raising in the temp. of a transformer to be used for percutaneous charging system for a pace maker and to improve the efficiency of a charging system by preventing the overcurrent of a primary side core of this transformer. CONSTITUTION: The surface facing the secondary core of a circumferential outer leg 14 of the primary side core 16 is provided with an expanded width part 15 expanded in an inner circumferential direction. This expanded width part 15 is radially provided with many slits 21 from its center. The eddy current of the expanded width part 15 is prevented by these slits 21, by which the efficiency of the system is improved and heat generation is suppressed.