Patent · US Active

Piezoelectric transformer

US11101426B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Bernhard Döllgast · Wolfsberg, AT
Franz Rinner · Wolfsberg, AT
Pavol Kudela · Freiland bei Deutschlandsberg, AT

Key dates

Filing date	Nov 8, 2016
Grant date	Aug 24, 2021
Priority date	—
Expiry date	Nov 17, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/506
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A piezoelectric transformer is disclosed In an embodiment a piezoelectric transformer includes a cylindrical base body with an input region and an output region, wherein a cylinder axis of the base body extends in a longitudinal direction, wherein the input region is configured to convert an AC voltage into a mechanical vibration, wherein the output region is configured to convert a mechanical vibration into an electrical voltage, wherein the output region includes a single piezoelectric layer polarized in the longitudinal direction, wherein, in the input region, a first piezoelectric layer, on which a first internal electrode is arranged, and a second piezoelectric layer, on which a second internal electrode is arranged, are wound onto one another, and wherein the first piezoelectric layer and the second piezoelectric layer are polarized in a radial direction which is perpendicular to the longitudinal direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.