Air conditioner and compressor protection circuit thereof
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United States of America Patent
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Oct 3, 2017
Grant Date -
Nov 10, 2016
app pub date -
Dec 30, 2014
filing date -
Apr 2, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An air conditioner and a compressor protection circuit thereof are provided. When overcurrent occurs in a phase current of a compressor, an overcurrent level signal is output by a voltage comparison module, and is latched and output to an intelligent power module by a signal latching module, and the intelligent power module shuts off the output of the phase current according to the overcurrent level signal, so as to achieve the overcurrent protection of the compressor; and subsequently, a conventional level signal is output to the signal latching module by the voltage comparison module, the signal latching module keeps outputting the overcurrent level signal, and outputs the conventional level signal until a latching cancel signal output by a signal processing circuit is received, so that the intelligent power module starts the output of the phase current, thereby enabling the compressor to normally operate.
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