Whatsminer P21 PSU auxiliary power circuit
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Whatsminer P21 PSU has a total of 2 auxiliary power circuits. Their output voltage has the following functions: one is to supply power to the CPU board; the other is to supply power to the PFC chip and No. 2 auxiliary power chip; the third is to supply power to control panel used. This video will explain each part of the auxiliary power area in detail, so as to understand their detailed circuit connections.
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