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. 23, 2018
Filed:
May. 14, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Cornelis Leonardus Gerardus Ham, Eindhoven, NL;
Martin Alexander Hollander, Eindhoven, NL;
Marinus Johannes Adrianus Maria Van Helvoort, Eindhoven, NL;
Michael Paul Bax, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A power supply unit () powers at least one gradient coil () of a magnetic resonance (MR) examination system () with a main magnet () having, in at least one state of operation, a substantially static magnetic field strength, and with an MR measurement signal bandwidth. The power supply unit () includes a switched-mode power converter () for powering the at least one gradient coil (), and including at least one switching member provided to switch between a conducting state configuration and an essentially non-conducting state configuration at a first fundamental switching frequency (fSW). A pulse control unit () is designed to provide switching pulses at the first fundamental switching frequency (fSW) for controlling the switching of the at least one switching member. Upon triggering by a trigger signal (), the pulse control unit () is provided to change the first fundamental switching frequency (fSW) to at least a second fundamental switching frequency (fSW).