公开(公告)号：US20190140162A1

公开(公告)日：2019-05-09

申请号：US16095324

申请日：2017-04-04

Applicant: EPCOS AG

Inventor： Denis OROSEL ,  Markus PUFF ,  Bernhard DOELLGAST ,  Michael SCHOSSMANN

IPC: H01L41/187 ,  C04B35/493 ,  C04B35/626 ,  C04B35/64 ,  H01L41/047 ,  H01L41/083 ,  H01L41/273

Abstract: A hard lead zirconate titanate (PZT) ceramic of the general structure ABO3 is specified, wherein the PZT ceramic has doping with Mn on the B sites and doping with Cu on the A sites and/or on the B sites. A process for producing a ceramic material and an electroceramic component are moreover specified.

公开(公告)号：US20160284970A1

公开(公告)日：2016-09-29

申请号：US15035198

申请日：2014-08-27

Applicant: EPCOS AG

Inventor： Peter KRAXNER ,  Markus PUFF

IPC: H01L41/107 ,  H01L41/047

CPC classification number: H01L41/107 ,  H01L41/047 ,  H05H2001/2481

Abstract: What is specified is a piezoelectric transformer (10) having a surface structure which has at least one protruding surface structure segment (5), wherein the piezoelectric transformer has a contour (3) and is suitable for discharging a gas in conjunction with a counter electrode (10) for generating a plasma, wherein the surface structure is configured such that the gas discharge takes place at a multiplicity of discharge initiation points (6) on the contour (3). A width of the surface structure segment (5) is smaller than the width of the piezoelectric transformer (1).

Abstract translation: 规定的是具有表面结构的压电变压器（10），其具有至少一个突出表面结构段（5），其中压电变压器具有轮廓（3），并且适于与对电极一起排出气体 （10），其中所述表面结构被配置为使得所述气体放电发生在轮廓（3）上的多个放电起始点（6）处。 表面结构段（5）的宽度小于压电变压器（1）的宽度。

公开(公告)号：US20190008027A1

公开(公告)日：2019-01-03

申请号：US15748590

申请日：2016-07-08

Applicant: EPCOS AG

Inventor： Michael WEILGUNI ,  Markus PUFF

IPC: H05H1/24 ,  H01L41/107 ,  H01L41/04

Abstract: A method for frequency control of a piezoelectric transformer and a circuit arrangement including a piezoelectric transformer are disclosed. In an embodiment, the method includes exciting a piezoelectric transformer on an input side with an AC voltage of predetermined frequency as input voltage, capturing a phase information for an input impedance of the piezoelectric transformer in a feedback path, evaluating the captured phase information in respect of a predetermined phase criterion, and regulating the frequency of the AC voltage on a basis of the evaluated phase information.

公开(公告)号：US20180212138A1

公开(公告)日：2018-07-26

申请号：US15746763

申请日：2016-06-27

Applicant: EPCOS AG

Inventor： Bernhard DOELLGAST ,  Markus PUFF ,  Pavol KUDELA

IPC: H01L41/047 ,  H01L41/187 ,  H01L41/053 ,  H01L41/107 ,  H01L23/32

CPC classification number: H01L41/0475 ,  H01L23/32 ,  H01L41/053 ,  H01L41/107 ,  H01L41/187

Abstract: The present invention relates to a holder (5) for a piezoelectric component (1), having a clamping device (6) and two contact elements (8) which contain a conductive rubber material, wherein the clamping device (6) is designed to clamp the piezoelectric component (1) between the contact elements (8) in a closed state, and wherein the contact elements (8) are in electrical contact with the piezoelectric component (1) in the closed state of the clamping device (6).

公开(公告)号：US20170208675A1

公开(公告)日：2017-07-20

申请号：US15327642

申请日：2015-07-10

Applicant: EPCOS AG

Inventor： Bernhard DOELLGAST ,  Markus PUFF ,  Pavol KUDELA ,  Michael WEILGUNI

IPC: H05H1/24 ,  H01L41/047 ,  H01L41/053 ,  H01L41/107

Abstract: The present invention relates to a piezoelectric transformer (1) which is divided in the longitudinal direction (L) into an input region (2) and an output region (3), wherein electrodes (4) and piezoelectric material (5) are alternately stacked in the input region (2) and an alternating voltage can be applied to the electrodes (4) in the input region (2), wherein the output region (3) comprises piezoelectric material (9) which effectuates the build-up of an electrical field when alternating voltage is applied in the input region (2), wherein the piezoelectric transformer (1) has an output-side end face (10) which faces away from the input region (2), and lateral edges (13) which extend in the longitudinal direction (L), and wherein the piezoelectric transformer (1) is designed for ionizing atoms or molecules at the output-side end face (10), thereby avoiding ionization of atoms or molecules at the lateral edges (13)