Title:
【発明の名称】圧電トランスとその製造方法
Document Type and Number:
Japanese Patent JP2671871
Kind Code:
B2
Abstract:
A driving section applied with an input a.c. voltage and a generator section for generating an output potential are incorporated in a piezoelectric ceramic transformer, and the generator section is polarized through a two-step polarizing technique where an electric field is created in the generator section in high temperature atmosphere and, thereafter, the temperature is decreased without changing the electric field, thereby saturating the polarization without a crack.
Inventors:
Takayuki Inoi
Yuko Sato
Yuko Sato
Application Number:
JP13397695A
Publication Date:
November 05, 1997
Filing Date:
May 31, 1995
Export Citation:
Assignee:
NEC
International Classes:
H01L41/107; H01L41/22; H01L41/257; H02M3/24; (IPC1-7): H01L41/107; H01L41/22; H02M3/24
Domestic Patent References:
| JP6338643A | ||||
| JP5315668A | ||||
| JP4933589A | ||||
| JP847094A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)