Patent ID: 6469921
Filing Date: 2002-10-22
Classification: H02M

Abstract:
A power supply apparatus comprising:at least two power supply units having their inputs connected to a DC supply supplying a DC voltage, and having their outputs connected in parallel to a load, each of said power supply units comprising: a DC-to-high-frequency converter receiving said DC voltage from said DC supply and converting the received DC voltage into a high-frequency voltage; a transformer for voltage-transforming said high-frequency voltage; a rectifier for rectifying an output voltage of said transformer; and a reactor for smoothing an output of said rectifier; said reactors of said power supply units being formed on a single core; said single core including a center part and at least two outer legs disposed on opposite sides of said center part, each of said outer legs extending along said center part and including a gap therein, windings of said reactors being wound in such a manner as to cover said gaps in said respective outer legs.