Antminer APW3 plus power supply EMI filter circuit

This video will demonstrate the design of the EMI circuit and the direction of the circuit in the Bitmain APW3+ power supply. The function of the EMI circuit is to filter the 220V AC voltage, thereby allowing the frequency signal of the device to enter the device during normal operation, and blocking high-frequency interference signals. The EMI filter circuit mainly includes two common mode inductors, two large X capacitors, and six Y capacitors. Additionally, there is a varistor that prevents external high voltage spikes from damaging the power supply. Under normal circumstances, this part of the circuit does not affect the performance parameters of the power supply.

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