Auxiliary power circuit of Antminer APW12 1215 power supply

There are 2 auxiliary powers in the APW12 power supply. The first auxiliary power consists of transformer and thick film chip, the other one consists of transformer, MOS tube, auxiliary power chip, and optocoupler. The auxiliary power input voltage is provided by the negative pole of the 450V capacitor on the PFC circuit. Therefore, this lesson will explain the powering process and measurement method of the auxiliary powers on the APW12 PSU.

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