| 摘要 |
Embodiments of the present invention provide a power supply circuit and panel. The power supply circuit includes: a power supply module (10), which supplies power to a distribution point; a switch module (20), which is separately connected to the power supply module (10), a terminal device, and the distribution point, and is connected to the distribution point and the terminal device when the distribution point does not need to be supplied with power, and is connected to the power supply module (10) and the distribution point when the distribution point needs to be supplied with power; a control module (30), which is connected to the power supply module (10), and controls, according to an electrical signal output by the power supply module (10), the switch module (20) to perform line switching; an isolation module (40), which is separately connected to the power supply module (10) and the switch module (20), prevents an external service from being output to the power supply module (10), and prevents a voltage provided by the power supply module (10) from being output to the terminal device; and a service backhaul module (50), which is separately connected to the isolation module (40) and the terminal device, and outputs the external service to the terminal device when the distribution point needs to be supplied with power. The embodiments of the present invention further provide a power supply panel. According to the present invention, a power supply line can be switched adaptively according to whether power needs to be supplied to a distribution point, thereby ensuring normal and safe use of another terminal device in a circuit. |
