Piezoelectric transformer

Details Piezoelectric transformer Piezoelectric transformer

1997-02-14

1999-09-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, H01L 4108

Patent

active

059593911

ABSTRACT:
A piezoelectric transformer includes a plate-shaped piezoelectric member having a driving section located at a first portion of the piezoelectric member including a first end and a power-generating section located at a second portion of the piezoelectric member including a second end. The driving section is made by repeatedly and alternately laminating a driving electrode and a portion of the piezoelectric member which is polarized in the thickness direction. The power-generating section includes a power-generating electrode and a portion of the piezoelectric member which is polarized in the longitudinal direction. In the piezoelectric transformer, at least one of the driving section and the power-generating section has an area which is near a boundary between the driving section and the power-generating section which has a lower degree of polarization than the degree of polarization in areas spaced away from the boundary between the driving section and the power-generating section.

REFERENCES:
patent: 3549913 (1970-12-01), Moriki et al.
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 5440195 (1995-08-01), Ohnishi et al.
patent: 5576590 (1996-11-01), Ohnishi et al.

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