公开(公告)号：US20220400348A1

公开(公告)日：2022-12-15

申请号：US17774802

申请日：2021-03-05

申请人： The Commonwealth of Australia

发明人： Scott Moss ,  Mason Paxevanos

IPC分类号： H04R17/00 ,  G01S7/521 ,  G01S15/87 ,  H01L41/187 ,  B06B1/06

摘要： Some embodiments relate to an energy transduction device or apparatus. An example device or apparatus includes: a piezoelectric transducer; electrical conductors electrically coupled to the piezoelectric transducer; and an axially aligned magnet assembly arranged to apply static compressive force to the piezoelectric transducer, the magnet assembly being coupled to a base at one end and having a free opposite end. The magnet assembly is coaxial with the piezoelectric transducer and at least part of the magnet assembly is concentric with the piezoelectric transducer. The magnet assembly defines a gap between axially adjacent parts of the magnet assembly, wherein the gap is dimensioned to be sufficiently small that the magnet assembly applies a static compressive force to the piezoelectric transducer while being sufficiently large to allow for axial movement of the piezoelectric transducer without closing the gap.