REFRIGERATOR
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United States of America Patent
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app pub date -
Apr 26, 2016
filing date -
Jul 31, 2015
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Abstract
A refrigerator according to an embodiment of the present invention includes a power input part through which power is input from a UPS device connected to a commercial power source and an auxiliary power source; a voltage sensor configured to sense a voltage of the power input through the power input part; and a control part configured to analyze a voltage signal sensed by the voltage sensor and to determine whether the input power is commercial power or auxiliary power.
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