Optocoupler feedback circuit of APW12 1215b PFC chip
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There are multiple optocouplers on the Antminer apw12 1215b power board. The topic of this video is about the optocoupler feedback circuit of the PFC chip. That is, the optocoupler can detect and feedback whether the PFC chip is working abnormally. If the PFC chip does not work properly, the power supply will fail and cannot provide power to the hash board normally.
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