| 摘要 |
<p>PROBLEM TO BE SOLVED: To display battery voltage information under ON state of a power source switch even after the power source switch is transited to the OFF state. SOLUTION: The device is equipped with a recognition means 21 for recognizing state of a power source switch 11, a voltage detection holding means 22 for detecting and holding voltage information of a battery 12, a means 23 for detecting that a held voltage under the ON state of the power source switch is below a normal value, a counting means 25 operating when the held voltage is below the normal value and the power source switch 11 transits to OFF state, and a display/warning 26 for having a time up output of the counting means 25 regularly generate low voltage warning. Also, the device can be constituted in such a manner that, when time-up occurs to the counting means 25, power switch ON state is automatically transited to and the device generates the low voltage warning based on the information held in the voltage detection holding means 22.</p> |
