Acceleration sensor circuit
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United States of America Patent
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Dec 19, 2017
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N/A
app pub date -
Sep 28, 2012
filing date -
Sep 30, 2011
priority date (Note) -
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Abstract
An acceleration sensor circuit 1 of the invention includes an acceleration sensor 11 having a first capacitor C1 whose capacitance changes according to a position of a first movable electrode and a second capacitor C2 whose capacitance changes as opposed to the first capacitor according to a position of a second movable electrode moved together with the first movable electrode, a first circuit 15A for generating a sinusoidal AC signal of a predetermined frequency, a second circuit 12 for generating a signal according to the positions of the movable electrodes, and an arithmetic circuit 14 for analyzing data in which a signal generated by the second circuit 12 is encoded and outputting data of acceleration.
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