MODULATION SCHEME FOR DRIVING A PIEZO ELEMENT

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United States of America Patent

APP PUB NO 20140285121A1
SERIAL NO

14355874

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present disclosure is directed to a modulation scheme for driving a piezo element. In one embodiment, a device may comprise, for example, a piezo element, voltage rails and bridge circuitry. The bridge circuitry may be coupled between the piezo element and the voltage rails. The bridge circuitry may include at least signal sources configured to generate drive signals that cause the piezo element to generate mechanical movement while being coupled to at least one of the voltage rails. In the same or a different embodiment the bridge circuitry may further include comparators, the output of the comparators being usable to determine the resonant frequency of the piezo element. The operating frequency of the bridge circuitry may be configured based on the resonant frequency of the piezo element.

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Patent Owner(s)

Patent OwnerAddress
FAIRCHILD SEMICONDUCTOR CORPORATION5005 E MCDOWELL ROAD MAILDROP A700 PHOENIX AS 85008

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Balogh, Laszlo Merrimack, US 14 228
Slater, Daniel Robert Reading, GB 2 24

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