| 摘要 |
<p>PURPOSE:To prevent a trouble such as a breakdown of the contents of a memory, etc. by constituting the titled circuit so that it is not shifted to an operating state, even if a start command is given, when an electronic apparatus is in a battery alarm state. CONSTITUTION:A battery voltage detecting circuit 11 monitors a voltage of a battery 1, and in case it is normal, logic '1' is outputted to a sub-control part 12. In this state, when a manual switch 9 is operated and a start command is generated, a power ON signal is outputted in order to operate a power switch 8, from the sub-control part 12 to a power switch controller 10. When an electronic apparatus is in an alarm state, logic '0' is outputted to the sub-control part 12 from the battery voltage detecting circuit 11. In this state, when the manual switch 9 is operated, the sub-control part 12 does not output the power ON signal to the power switch controller 10, therefore, the power switch 8 is in an OFF state, and no power source is supplied to a main control part 7.</p> |
