| 摘要 |
<p>PURPOSE:To increase the time during which a system has the breakdown from a low battery state by switching off the power supplies of the units having large power consumption when a low battery state is produced. CONSTITUTION:A low level state of a battery 11 is detected by a detecting means of a power supply device 12. Then an HDD (hard disk device) power supply 15 is turned off by a switching circuit with a logic power supply 16 kept turned on as it is. In such a way, the power supply of a unit having large power consumption is turned off in a low battery state together with other units having small power consumption kept turned on respectively. Thus, the time point when the breakdown of a system occurs can be prolonged. In addition, the breakdown of data can be avoided because the power supply is switched off in a ready state of the unit.</p> |
