| 摘要 |
<p>PURPOSE:To prevent a trouble which can not be recovered such as the stoppage of the operation of a CPU, or the volatilization of the content of a memory due to the delay of a power supply from an incorporated power source to an electronic equipment at the time of the disconnection of an attachable and detachable battery or an alternating current power source. CONSTITUTION:This system is equipped with a detecting means 18 which detects the connection state of a first power source 2. When the disconnection of the first power source 2 is detected, a driving power source is temporarily switched to a third auxiliary power source device 19, a DC-DC converter 17 which is operated by a second power source 16 is allowed to rise, and the driving power source is switched to the second power source 16.</p> |
