PRIMARY CORE OF NON-CONTACT ENERGY TRANSMISSION SYSTEM TRANSFORMER

摘要

PURPOSE: To obtain a primary core of a transformer for use in a pace maker charging system which executes electric charging through the skin, wherein the primary core is capable of increasing its coupling rate with a secondary core of the transformer, giving a prescribed magnetic flux to a secondary system with a less exciting current, restraining the transformer from increasing in temperature, and enhancing the pace maker charging system in efficiency. CONSTITUTION: The face 24 of the peripheral wall 23 of a primary core 21 confronting a secondary core is enlarged in width in an outer peripheral direction to turn into an enlarged part 25 so as to make the face 24 wider than the thickness of the peripheral wall 23.