| 摘要 |
<p>PURPOSE:To prevent the inflow of charging current into a battery pack type AC adapter. CONSTITUTION:It is judged that an object mounted on a mounting part 10 is battery pack 1 or a battery pack type AC adapter 4 based on terminal voltage detected by a voltage detection circuit 13. When the AC adapter 4 is mounted, a switch 15 is opened and the charging current to be supplied from a charging circuit 14 to the mounting part 10 is stopped. Thus, there is no fear that the circuit components of the battery pack type AC adapter 4 are damaged, and the external AC adapter can be connected even when the battery pack type AC adapter is mounted.</p> |
