Arrangement and method for monitoring a power supply
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United States of America Patent
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Jan 16, 2018
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app pub date -
Sep 2, 2014
filing date -
Sep 4, 2013
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Abstract
A method for monitoring a power supply connected to a superordinate controller via a signal line, wherein the superordinate controller queries whether the power supply is operating faultlessly at variable intervals, where during faultless operation, a power-good signal is continuously transmitted by the power supply to the superordinate controller via the signal line and, if a fault occurs, an indicating signal is transmitted by the power supply to the superordinate controller via the signal line as a switching sequence of high and low signals such that each signal change of the switching sequence occurs only after a time period that is longer than an expected greatest query interval and each signal of the switching sequence that does not correspond to the power-good signal is shorter than a specified signal duration for indicating a total failure of the power supply, whereby the superordinate controller receives more information than previously.
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