| 摘要 |
A power supply circuit and a power supply panel. The power supply circuit includes: a power supply module (10) for supplying power for a distribution point; a switch module (20) respectively connected with the power supply module (10), a terminal device and the distribution point, for connecting the distribution point with the terminal device when the distribution point does not need power supply, and for connecting the power supply module (10) with the distribution point when the distribution point needs power supply; a control module (30) connected with the power supply module (10), for controlling the switch module (20), based on the electric signal outputted from the power supply module (10), to carry out circuit switching; an isolating module (40) respectively connected with the power supply module (10) and the switch module (20), for preventing the external business from being outputted to the power supply module (10) and preventing the voltage provided by the power supply module (10) from being outputted to the terminal device; and a business passing-back module (50) respectively connected with the isolating module (40) and the terminal device, for outputting the external business to the terminal device when the distribution point needs power supply. With the power supply circuit and the power supply panel, a power supply line can be self-adaptively switched according to whether the distribution point is supplied power or not, so as to make sure that other terminal devices in the circuit are normally and safely used. |
