The 36v AC usb charging socket cannot be directly connected, and the 220V AC needs to be converted into 36V AC when connecting.
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Alternating current is an alternating current whose size and direction change periodically with time.
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Direct current is the opposite. Power grid companies generally use alternating current for power transmission, but there are high-voltage direct current for long-distance high-power transmission, submarine cable transmission, and asynchronous communication between AC systems