Piezo-electric transformer

Details Piezo-electric transformer Piezo-electric transformer

1997-09-16

1999-10-05

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310357, H01L 4108

Patent

active

059629541

ABSTRACT:
A piezo-electric transformer comprising a piezo-electric body (PEB) including a driving region having input electrodes (1, 3) and at least one driven region having output electrodes (E11). These regions have opposite faces with at least one of the regions comprising a number of sections polarized in a direction perpendicular to the opposite faces and one pole of each section being connected to an opposite pole of another section by electrically conductive elements (2, 1', 2') in such a way that the sections form a series arrangement.
These sections are in a very simple way effectively arranged in series, thereby increasing the input impedance of the piezo-electric transformer. Because the sections are polarized in opposing directions the electrically conductive elements can be of a very simple construction which do not require external conduction wires.

REFERENCES:
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 5365141 (1994-11-01), Kawai et al.
patent: 5371430 (1994-12-01), Sato et al.
patent: 5463266 (1995-10-01), Fukuoka et al.
patent: 5504384 (1996-04-01), Lee et al.
patent: 5701049 (1997-12-01), Kanayama et al.
patent: 5751092 (1998-05-01), Abe
patent: 5818150 (1998-10-01), Yamamoto et al.

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