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:
Jun. 02, 2015
Filed:
May. 16, 2011
Applicant:
Göran Cewers, Limhamn, SE;
Inventor:
Göran Cewers, Limhamn, SE;
Assignee:
MINDRAY MEDICAL SWEDEN AB, Sundbyberg, SE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 (2006.01);
U.S. Cl.
CPC ...
H02N 2/0075 (2013.01);
Abstract
The disclosure pertains to a method of charging or discharging a capacitive element, such as a piezoelectric crystal. The disclosure also pertains to a device that implements charging of a capacitive element according to said method. The device comprises a bipolar buck-boost converter, whereby a capacitive element can be charged with both positive and negative voltages. The discharge of the capacitive element is provided with energy recovery and feedback to the device's power supply.