抄録
Recently, applications of small induction heater are evolving into various fields for high heating efficiency, saving energy and environmental improvement. The purpose of this study is to improve heating efficiency and to get a wide uniform heating region in iron hot plate for cooking, by devising a shape and a position of plural induction coils wound on ferrite cores of induction heater. Proposed induction heater for iron hot plate was realized a high temperature rise more than 200 degree on iron hot plate, and was proved practically and economically.