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:
Dec. 13, 2022
Filed:
Aug. 31, 2020
Applicants:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Inventor:
Hideki Kimura, Yokohama Kanagawa, JP;
Assignees:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/18 (2006.01); H02P 7/29 (2016.01); H02P 29/032 (2016.01); H02P 7/03 (2016.01);
U.S. Cl.
CPC ...
H02P 1/18 (2013.01); H02P 7/04 (2016.02); H02P 7/29 (2013.01);
Abstract
According to an embodiment, a driving apparatus of a DC brush motor includes: a drive circuit that supplies motor current to a coil of a DC brush motor; and a control circuit configured to: after a predetermined time interval has elapsed since starting-up of the DC brush motor, drop down step-by-step a limit value that sets an upper limit of the motor current; and detect turning into a state where the motor current is limited by the limit value.