Liquid discharging apparatus, head unit, capacitive load driving circuit, and control method of capacitive load driving circuit

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United States of America Patent

PATENT NO 9475284
APP PUB NO 20160221332A1
SERIAL NO

15003165

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A liquid discharging apparatus includes a modulation portion that generates a modulation signal obtained by pulse-modulating a source signal; an amplifier that includes a first transistor and a second transistor operating based on the modulation signal; an operation control portion that controls operations of the amplifier; a low-pass filter that generates a driving signal by demodulating an amplification modulation signal generated based on operations of the first transistor and the second transistor; and a piezoelectric element that is displaced by applying the driving signal. The operation control portion performs a stopping process that stops an operation of the amplifier by allowing the first transistor to be in a non-conductive state in which a current does not flow through the first transistor and the second transistor to be in a conductive state in which the current flows through the second transistor.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sano, Takafumi Matsumoto, JP 23 97

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