Whatsminer P21 PSU main power circuit

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Whatsminer P21 PSU main power circuit

Whatsminer P21’s main power area is to output 12V DC voltage to power the M20 series hash board. It is mainly composed of a small CPU board, transformers, switching MOS tubes, rectifying MOS tubes and filter capacitors. If the previous EMI circuit, PFC circuit and auxiliary power circuit are all normal, but there is no 12V output, we need to diagnose the problem in the P21 main power area.

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