Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-09-10
1998-10-27
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310359, H01L 4108
Patent
active
058281606
ABSTRACT:
A piezoelectric transducer has groups of a first part and second part therebetween. Thin piezoelectric ceramic layers in groups and thick piezoelectric ceramic layers in the second part are polarized in the direction of thickness A or B. All of electrodes are layers, and each electrode is provided between the piezoelectric ceramic layers. A step-up output voltage is generated between the piezoelectric ceramic layers of the second part by longitudinal vibration of the piezoelectric ceramic layers of the groups.
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Dougherty Thomas M.
Tierney Daniel E.
U.S. Philips Corporation
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