Patent ID: 6388897
Filing Date: 2002-05-14
Classification: H02M

Abstract:
A DC-to-DC converter, comprising:a power supply for providing a first direct current (DC); a first capacitor electrically connected to said power supply for being charged by said power supply; a first switch assembly electrically connected to said first capacitor for converting said first direct current (DC) into a first alternating current by switching said first switch assembly; a transformer having a primary winding and a secondary winding for converting said first alternating current to a second alternating current, wherein said primary winding is electrically connected to said first switch assembly and said secondary winding has a tap; a rectifying circuit electrically connected to said secondary winding for rectifying said second alternating current to a second direct current; a filtering circuit electrically connected to said rectifying circuit for filtering said second direct current; and a range winding assembly electrically connected to said secondary winding and being one portion of said secondary winding for adjusting a turn ratio of said transformer to maintain an output voltage of said second direct current in response to a voltage drop of said first direct current.