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:
Aug. 25, 1998
Filed:
Apr. 22, 1997
Katsunori Sugimori, Tokyo, JP;
Hiroshi Sakamoto, Kumamoto, JP;
Nippon Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A switching power circuit for battery charger, comprising a single-phase full-wave rectifier circuit formed of diodes, a half bridge circuit formed of first and second switching elements connected in series to each other via a diode; a reactor provided between the single-phase full-wave rectifier circuit and the half bridge circuit of the switching elements and having a secondary coil, a series circuit formed of two diodes connected in parallel across the half bridge circuit, a high-frequency transformer having a primary coil connected between the source terminal of the second switching element in the half bridge circuit and the common junction of the two capacitors in the two-capacitors series circuit a secondary coil at which a high-frequency power is delivered to a load forming a battery charger, and a control circuit consisting of a variable frequency multivibrator to turn on and off the first and second switching elements alternately.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile