Method and apparatus for converting capacitance to voltage
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United States of America Patent
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Mar 12, 2002
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N/A
app pub date -
May 9, 2000
filing date -
May 9, 2000
priority date (Note) -
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Abstract
An apparatus for converting capacitance in a capacitive sensor into a voltage signal. A capacitive sensor monitors a physical parameter. A capacitance of the sensor varies with the physical parameter. A voltage supply applies an alternating voltage to the capacitive sensor, which creates an output signal from the sensor. A modulator modulates the output signal, which produces a voltage signal that corresponds to the capacitance of the sensor.
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