公开(公告)号：US20190123919A1

公开(公告)日：2019-04-25

申请号：US16220891

申请日：2018-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang ZHANG ,  Xin Jia

IPC: H04L12/10 ,  H04L12/28 ,  H04B10/80 ,  H04M19/04

Abstract: The present invention discloses a switching device. The switching device includes: a reverse voltage conduction module, configured to receive a first voltage, where the reverse voltage conduction module is further configured to conduct the first voltage after receiving the first voltage; and a switching circuit, configured to switch, by using the first voltage conducted by the reverse voltage conduction module, a device connected to a terminal device from a source device to a target device, so that the terminal device reversely supplies power to the target device. This can reduce engineering complexity and reduce human costs.