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. 18, 2022
Filed:
Sep. 23, 2016
Epcos Ag, Munich, DE;
Michael Weilguni, Hagenberg, AT;
Franz Rinner, Deutschlandsberg, AT;
EPCOS AG, Munich, DE;
Abstract
The invention relates to a piezoelectric transformer having a piezoelectric element () of the length L, wherein an input voltage Ucan be applied on an input side () for being transformed into an output voltage Uon the output side () according to a transformation ratio U/U=K. The piezoelectric element () comprises multiple plies () of inner electrodes, which are arranged in multiple different layers (S, S, S). Each ply () of inner electrodes extends along at least one predetermined sub-section of a predetermined length, wherein sub-sections of plies () of a first group of layers (S, S) and sub-sections of plies () of a second group of layers (S) have different dimensions, so that the piezoelectric transformer satisfies the following condition: C≤NC, wherein Cindicates the input capacitance, Cindicates the output capacitance, and N indicates the transformation ratio of the ideal transformer.