Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-06-11
1999-03-02
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310366, 310328, H01L 4108
Patent
active
058775811
ABSTRACT:
The piezoelectric layers of a laminated piezoelectric transformer include outermost ceramic layers having first openings defined therein for connection to inner electrodes. The inner electrodes comprise full-face electrodes, each of the inner electrodes having a second opening defined in a corner thereof and filled with an electrically conductive electrode and a third opening defined in another corner thereof and filled with an electrically conductive electrode surrounded by an electrode-free gap. The piezoelectric layers are stacked such that the inner electrodes are alternately electrically interconnected through the second and third openings which are alternately superposed one on another. The electric generator comprises piezoelectric layers and web-shaped inner electrodes. Each of the web-shaped inner electrodes has a fourth opening defined in at least one end thereof and filled with an electrically conductive electrode.
REFERENCES:
Kumasaka et al., "Piezoelectric Transformers Using Multilayer Piezoelectric Vibrators for Lower Voltage Driving", Tokin Technical Review, Nov. 22,1995 .
Inoi Takayuki
Saitou Susumu
Budd Mark O.
NEC Corporation
Williams Timothy A.
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