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:
Jun. 27, 2000
Filed:
Mar. 22, 1999
Applicant:
Inventors:
Assignee:
Fuji Electric Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H02M / ;
U.S. Cl.
CPC ...
363 24 ; 363 15 ; 363127 ;
Abstract
A switch circuit comprising a semiconductor switch and an inverse-parallel diode is connected between a main electricity storage unit 4 and a primary winding 142P of an insulating transformer 142 and a switch circuit including a semiconductor switch and a diode is connected in inverse-parallel between a secondary winding 142S of the insulating transformer 142 and an auxiliary electricity storage unit 10. The switch circuits are controlled on/off, whereby power is supplied from the main electricity storage unit 4 to the auxiliary electricity storage unit 10 or from the auxiliary electricity storage unit 10 to the main electricity storage unit 4 for charging the electricity storage unit 10 or 4.