Piezoelectric transformation driving apparatus

Details Piezoelectric transformation driving apparatus Piezoelectric transformation driving apparatus

2005-09-13

2005-09-13

Hjerpe, Richard (Department: 2675)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S211000, C310S311000, C310S316010, C310S317000, C310S318000, C315S055000, C315S307000

Reexamination Certificate

active

06943785

ABSTRACT:
A piezoelectric transformation driving apparatus for driving elements or products to be driven by a high or a low voltage includes a driving module consisting of a pulse-width modulation (PWM) control unit and a single driving unit. The driving module outputs driving signals of the same phase and the same frequency to drive a plurality of transformation units, a plurality of piezoelectric units and a plurality of loads.

REFERENCES:
patent: 3707636 (1972-12-01), Inoue
patent: 5341061 (1994-08-01), Zaitsu
patent: 5736807 (1998-04-01), Hakamata et al.
patent: 6075325 (2000-06-01), Kouno et al.
patent: 6278226 (2001-08-01), Danov et al.
patent: 6724126 (2004-04-01), Chou
patent: 2001/0035698 (2001-11-01), Nakatsuka et al.

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