OVERCURRENT PROTECTION FOR AN AUTOMOTIVE INSTRUMENT CLUSTER
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United States of America Patent
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Issued Date -
Apr 7, 2016
app pub date -
Oct 1, 2014
filing date -
Oct 1, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for protecting an instrument panel circuit from overcurrents includes a differential amplifier that magnifies a voltage drop across at least one power input component. The magnified voltage drop is provided to a hysteresis comparator that compares the voltage drop against a pair of hysteresis thresholds. When the voltage drop exceeds the thresholds, an overcurrent is detected and a default state of a power switching element is changed from closed to open.
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