Method and apparatus for driving capacitive element

Details Method and apparatus for driving capacitive element Method and apparatus for driving capacitive element

2005-01-11

2005-01-11

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S317000

Reexamination Certificate

active

06841920

ABSTRACT:
A method and apparatus for driving a capacitive element are provided wherein: (i) when charging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is charged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance; and (ii) when discharging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is discharged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance.

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U.S. Appl. No. 09/559,964 filed Apr. 27, 2000, entitled Capacitive Element Driving Apparatus, inventor: J. Takamura, et al.
U.S. Patent Office Action dated Oct. 4, 2001 issued in related U.S. Appl. No. 09/559,864, filed Apr. 27, 2000; Applicants: Jun Takamura et al. Title: Capacitive Element Driving Apparatus.

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