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:
Jan. 05, 2021
Filed:
Apr. 11, 2017
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Assignee:
ROHM CO., LTD., Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 7/53 (2006.01); H02M 7/5387 (2007.01); H02M 7/48 (2007.01); H01F 27/24 (2006.01); H02M 7/5395 (2006.01);
U.S. Cl.
CPC ...
H02M 7/5387 (2013.01); H01F 27/24 (2013.01); H02M 7/48 (2013.01); H02M 7/5395 (2013.01);
Abstract
The alternating-current power supply devicehas: an alternating-current generation bridgefor obtaining an alternating-current output; PWM control bridges, each including two switch components; and a coupling reactorconnected to the PWM control bridges. The coupling reactorincludes: a core; and windingswhich are connected at one end to respective output ends of the PWM control bridgeswhile being coupled with each other via the core. The windingsare respectively wound in such directions that magnetic fluxes generated in the corecancel each other out.