| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce unnecessary power consumption from a power accumulator to a control section, when the voltage of a main power supply drops. <P>SOLUTION: Since a passage for supplying power from a power accumulator 13 to a control section 17, when the voltage of a main power supply 1 drops is constituted through a third diode 19, having a cathode connected with the power supply terminal 18 of the control section 17 and an anode, connected with the junction point of a transfer switch 15 and a first diode 25, power can be supplied from the power accumulator 13 to the control section 17, if the transfer switch 15 is switched on, and only when power is supplied from the power accumulator 13 to a load 7, and thereby unnecessary power consumption can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
