Piezoelectric element driving circuit and pump device

Details Piezoelectric element driving circuit and pump device Piezoelectric element driving circuit and pump device

2008-07-21

2010-06-08

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S318000

Reexamination Certificate

active

07732978

ABSTRACT:
A piezoelectric element driving circuit includes: a transformer; a switch circuit; a reactance element connected in parallel with the piezoelectric element on one of the primary side and the secondary side of the transformer, the reactance element forming a resonant circuit that performs parallel resonance at the driving frequency with a capacitance component in an equivalent circuit of the piezoelectric element and an inductance component of the transformer; a pulse generating circuit for generating a driving pulse for the switch circuit; and a duty ratio controlling circuit for being supplied with the driving pulse, limiting a duty ratio of the driving pulse such that a value of the driving voltage falls within a range equal to or lower than the specification voltage value on the load side, and outputting the driving pulse whose duty ratio is limited to the switch circuit.

REFERENCES:
patent: 6791239 (2004-09-01), Chou et al.
patent: 6943785 (2005-09-01), Chou et al.
patent: 7525234 (2009-04-01), Martin
patent: 2003/0164658 (2003-09-01), Saraf
patent: 2005/0225203 (2005-10-01), Chou
patent: 01-107681 (1989-04-01), None
patent: 02-149358 (1992-02-01), None

Affiliated with

Also associated with

Rating

Piezoelectric element driving circuit and pump device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoelectric element driving circuit and pump device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric element driving circuit and pump device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4249370