Piezoelectric transformer with monitor electrodes for sensing un

Details Piezoelectric transformer with monitor electrodes for sensing un Piezoelectric transformer with monitor electrodes for sensing un

1997-07-29

1999-10-05

LaBalle, Clayton

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310366, H01L 4104, H01L 4108

Patent

active

059629533

ABSTRACT:
A piezoelectric transformer includes at least a pair of monitor electrodes for monitoring unbalanced vibration of the piezoelectric element. The transformer also has a plurality of input electrodes for a transformer input signal and a pair of output electrodes for a transformer output signal. While driven by the input signal to produce the output signal, the piezoelectric transformer produces a pair of monitor signal components at the monitor electrodes to individually indicate vibration components produced in the piezoelectric transformer collectively as a state of unbalanced operation of the transformer.

REFERENCES:
patent: 5420548 (1995-05-01), Nakajima
patent: 5463266 (1995-10-01), Fuuoka et al.
patent: 5654605 (1997-08-01), Kawashima
patent: 5701049 (1997-12-01), Kanayama et al.
patent: 5705877 (1998-01-01), Shimada
patent: 5705879 (1998-01-01), Abe et al.
patent: 5818150 (1998-10-01), Yamamoto et al.

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