Whatsminer P221C main power chip optocoupler feedback circuit

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Whatsminer P221C main power chip optocoupler feedback circuit

The optocoupler feedback circuit of the P221C main power chip is one of the important circuits. It consists of three parts, namely the optocoupler feedback of the No. 1 auxiliary power chip, the optocoupler feedback of the No. 2 auxiliary power chip, and the optocoupler feedback of the PFC chip. Learn how these optocoupler feedback circuits work and measure them for easy troubleshooting.

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