| 摘要 |
In the present invention, if an AC/DC adapter is connected only to an FE device, external power which is supplied to the FE device is then supplied to a load inside the FE device, and is also supplied to a battery inside the FE device as needed. A portion of the external power is sent to a BE device as interchange power. The interchange power is supplied to a load inside the BE device, and is also supplied to a battery inside the BE device as needed. If the adapter is not connected to the FE device, a switch circuit inside the FE device performs a blocking action. If the adapter is connected to the BE device, the BE device limits the power reception. |
