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:
Sep. 06, 1994
Filed:
May. 21, 1993
Applicant:
Inventors:
Masayoshi Sato, Hitachi, JP;
Kenichi Onda, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H02M / ;
U.S. Cl.
CPC ...
363 24 ; 363133 ;
Abstract
A power source having a first rectifier, a transformer having a primary coil and a secondary coil, switching elements having one end thereof connected to one of the terminals of the primary coil, a capacitor connected between other ends of the switching elements, diodes respectively connected between the terminals of the primary coil and the other ends of the switching elements, a choke coil for supplying the input DC voltage from the first rectifier directly to one of the terminals of the primary coil, and a second rectifier for supplying an output DC voltage to a load by rectifying the output AC voltage from the secondary coil.