Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-01-02
1999-04-06
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310357, 310359, 310366, H01L 4104
Patent
active
058923187
ABSTRACT:
A piezoelectric ceramic transformer made from a piezoelectric ceramic material stacked in a multilayer package which has a driving section 502 formed by alternately stacking piezoelectric ceramic layers polarized in a direction of thickness of the piezoelectric plate. The driving section 502 has internal interdigitated electrode layers 504A, 504B for causing piezoelectric vibration by a driving voltage applied to an input terminal (Vin). A first driven section 506, also made from piezoelectric ceramic layers polarized in the longitudinal direction of the piezoelectric plate, for generating a first output voltage (Vout1) at a first output by the piezoelectric vibration transmitted from the driving section 502. A second driven section 510, made from piezoelectric ceramic layers polarized in the thickness direction of the piezoelectric plate, for generating a second output voltage (Vout2) at a second output by the piezoelectric vibration transmitted from the driving section 502. Thus, a piezoelectric ceramic multilayer transformer with a multiple output is created.
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Dai Xunhu
Phillips James R.
Budd Mark O.
Cunningham Gary J.
Motorola Inc.
Raufer Colin M.
Williams Timothy A.
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