The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
May. 18, 2000
Kyoji Moro, Chiba-ken, JP;
Ren Mukai, Chiba-ken, JP;
Miyachi Technos Corporation, Chiba-Ken, JP;
Abstract
In odd-numbered current-supplying periods of a plurality of current-supplying periods constituting a gross current-supplying time, a control unit allows continuous switching actions of only a first set of switching elements at an inverter frequency, with a second set of switching elements remaining OFF. In even-numbered current-supplying periods, the control unit allows continuous switching actions of only the second set of switching elements at the inverter frequency, with the first set of switching elements ( ) remaining OFF. As a result of this, a secondary circuit of the power supply apparatus allows a secondary current i , namely a fusing current I having a substantially trapezoidal current waveform to flow in a positive direction in the odd-numbered current-supplying periods, and to flow in a negative direction in the even-numbered current-supplying periods.