High-voltage driver and piezoelectric pump with built-in driver

Details High-voltage driver and piezoelectric pump with built-in driver High-voltage driver and piezoelectric pump with built-in driver

2011-03-08

2011-03-08

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S328000, C310S348000

Reexamination Certificate

active

07902720

ABSTRACT:
A digital waveform generating circuit having a DC voltage as an input and generating a sinusoidal digital signal, an active filter extracting low-frequency components from the sinusoidal digital signal generated in the digital waveform generating circuit, and a high-voltage control circuit generating a high-voltage drive signal using the sinusoidal digital signal after passing through the active filter are provided. A smooth waveform without steep voltage changes is generated.

REFERENCES:
patent: 5578888 (1996-11-01), Safabakhsh
patent: 2006/0186757 (2006-08-01), Pletner et al.
patent: 6-109068 (1994-04-01), None
patent: 8-205563 (1996-08-01), None
patent: 2000-60847 (2000-02-01), None
esp@cenet patent abstract for Japanese Publication No. 6109068, Publication date Apr. 19, 1994 (1 page).
esp@cenet patent abstract for Japanese Publication No. 8205563, Publication date Aug. 9, 1996 (1 page).
esp@cenet patent abstract for Japanese Publication No. 2000060847, Publication date Feb. 29, 2000 (1 page).

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