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1. 发明授权

US5872419A Piezoelectric transformer with voltage feedback 失效
标题翻译：带电压反馈的压电变压器
公开(公告)号：US5872419A
公开(公告)日：1999-02-16
申请号：US923652
申请日：1997-09-04
申请人： Dale G. Hall , James R. Phillips , Gary L. Vaughn , Donald Forst , Harold W. Mech
发明人： Dale G. Hall , James R. Phillips , Gary L. Vaughn , Donald Forst , Harold W. Mech
IPC分类号： H01L41/107 , H01L41/08
CPC分类号： H01L41/107
摘要： A piezoelectric transformer with voltage feedback is disclosed. The transformer comprises a piezoelectric plate of predetermined length, width and height with a driving section formed by alternately stacking a plurality of piezoelectric ceramic layers having internal interdigitated electrode layers. A driven section including an unpolarized dielectric section, a voltage feedback section in the form of a multilayer electrode structure or an outer strip, and a normally polarized dielectric section is also disclosed. The transformer generates an output voltage at an output terminal by the piezoelectric vibration transmitted from the driving section. A feedback control circuit is connected to the voltage feedback section. The isolated voltage feedback provides feedback control to keep the transformer operating at the proper resonant frequency even as there is a change in output load of the transformer.
摘要翻译：公开了一种具有电压反馈的压电变压器。变压器包括具有预定长度，宽度和高度的压电板，驱动部分通过交替地堆叠具有内部交叉电极层的多个压电陶瓷层而形成。还公开了一种包括非偏振电介质部分的驱动部分，多层电极结构或外部条带形式的电压反馈部分和常平极化电介质部分。变压器通过从驱动部传递的压电振动在输出端产生输出电压。反馈控制电路连接到电压反馈部分。隔离电压反馈提供反馈控制，以保持变压器工作在正确的谐振频率，即使变压器的输出负载有变化。

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