The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positive sequence component of the supply voltage in real time.

这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。

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Depending on the polarity of an ESD event you apply to the circuit's input connector, its high-voltage spike discharges through diode D1A or D1B into the positive or the negative power-supply rail.

依靠ESD适用电路输入连接器的极性，其高电压放电通过二极管d 1a或d1b进入供电正向或负向电源。

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Surface activation: activation plating must take positive power supply, plating document connected with negative voltage 8-15v, time, 60-90s.

表面活化处理：活化时镀件必须接电源正极，化工泵镀笔接负极，电压8 - 15v，时间60 - 90s。

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