Piezoelectric transformer and method for driving the same

Details Piezoelectric transformer and method for driving the same Piezoelectric transformer and method for driving the same

1993-02-16

1994-11-15

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310366, H01L 4108

Patent

active

053651413

ABSTRACT:
A piezoelectric transformer is constituted of a piezoelectric plate in the form of an elongated plate and electrodes formed thereon. A pair of driver sections and a generator section are formed in two opposite end regions of the piezoelectric plate containing a mechanical resonance node and in a central region of the piezoelectric plate containing a mechanical resonance node, respectively, in an oscillation mode of three times of 1/2 of the resonance wavelength .lambda. of the longitudinal mechanical oscillation in length of the piezoelectric plate. The driver sections are polarized in a thickness direction but in directions opposite to each other. The driver sections have a distance of .lambda./2 from the corresponding end of the piezoelectric plate.

REFERENCES:
patent: 2974296 (1961-03-01), Rosen
patent: 3562792 (1971-02-01), Berlincourt et al.
patent: 3707636 (1972-12-01), Inoue
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 3764848 (1973-10-01), Berlincourt et al.

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