The Antminer APW9+ power supply has 2 auxiliary power circuits, they have different roles. One is used to supply power to the No. 1 PFC chip, fan interface, CPU, and main power chip; the other is used to supply power to the No. 2 PFC chip, fan interface and control board interface. This lesson will demonstrate the structure and direction of the auxiliary circuit in the Bitmain APW9+ power supply. Understanding the circuit direction of the auxiliary power circuits is helpful to better overhaul the Bitmain APW9+ PSU.
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