| 摘要 |
<p>PURPOSE:To prevent stop of load by a discharged battery by providing a main battery having a large battery capacity and an auxiliary battery having a small battery capacity and driving a load through preferencial connection of main battery by switch operation. CONSTITUTION:A main battery 11 having a large battery capacity and an auxliary battery 12 having a small battery are connected to a motor 16 of an electric shaver, etc. The motor is driven by the main battery 11 with th contact 13 turned ON by operation of a main switch 6, or it is driven by the auxiliary battery 12 with the contact 15 turned OFF by operation of an auxiliary switch 7. Such operations are displayed by a display circuit Z. The batteries 11, 12 are connected to the charging circuit X through the rectifiers 9, 10 for realizing the charging. Discrepancy by discharged battery can be prevented by constituting the switch in a variety of structures, for example, that the main battery 11 is preferencially connected than the auxiliary battery 12 and the auxiliary battery 12 can be used only when the main battery 11 is discharged.</p> |
