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:
May. 28, 2013
Filed:
Oct. 06, 2010
Applicant:
Jussi Lahteenmaki, Hyvinkää, FI;
Inventor:
Jussi Lahteenmaki, Hyvinkää, FI;
Assignee:
Kone Corporation, Helsinki, FI;
Primary Examiner:
Int. Cl.
CPC ...
H02P 5/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a power supply apparatus and also to a power supply arrangement. The power supply apparatus comprises an interface to the load. The power supply apparatus also comprises at least one controllable solid-state switch, for supplying power between the aforementioned load and the power supply apparatus. The power supply apparatus comprises a controller, which is fitted to control the at least one controllable solid-state switch at the selected switching frequency. The switching frequency is selected such that the noise of the load corresponding to the selected switching frequency meets the selection criterion.