Metal working – Piezoelectric device making
Patent
1996-05-29
1998-06-02
Hall, Carl E.
Metal working
Piezoelectric device making
264 22, H01L 4122
Patent
active
057583978
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.
REFERENCES:
patent: 5463266 (1995-10-01), Fukuoka et al.
patent: 5504384 (1996-04-01), Lee et al.
Y. Kodama et al.; "The Study of Piezoelectric Ceramic Transformer for High Voltage Generation"; pp. 144-149.
Inoi Takayuki
Sato Yuko
Hall Carl E.
NEC Corporation
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