| 摘要 |
PURPOSE:To prevent misoperation before occurrence, when turning on a main power supply, due to decreased voltage of a cell, in an electronic equipment using the cell as the power supply. CONSTITUTION:In a power supply control means 3, when a main power supply 2 is turned on, the voltage of a cell 5 is measured, and the main power supply 2 is turned on when the voltage of the cell 5 is the prescribed threshold level or higher, but it is not turned on when the voltage of the cell 5 is lower than prescribed threshold level so as to perform a battery end process. |
