Loop powered isolated contact input circuit and method for operating the same
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United States of America Patent
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Jan 10, 2017
Grant Date -
Oct 30, 2014
app pub date -
Apr 29, 2013
filing date -
Apr 29, 2013
priority date (Note) -
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Abstract
A voltage is sensed at a switching device and the voltage is associated with a status of a switching device. The sensed voltage is converted to a useable voltage regardless of the value and type of the sensed voltage. At a single self-contained integrated circuit that is powered by the sensed voltage, the usable voltage is converted into a digital representation. The digital representation is configured to be usable by a processing device to determine the value of the voltage at the switching device.
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