| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power distribution system capable of supplying DC power to electric equipment of different actuating voltage with high utilizing efficiency of an electric power. <P>SOLUTION: A DC power is supplied to a DC equipment 20 from a DC power supply 10 through a power supplying line Lp. The power supplying line Lp has two wires, and the DC power supply 10 selects a voltage level applied across the power supplying line Lp in three stages, to apply each of the voltages to the line in circulation. The DC equipment 20 has a voltage detecting means 21 for detecting whether the voltage applied to the power supplying line Lp is suitable to the actuating voltage level of its own. The DC power supplied from the power supplying line Lp in an adjusted period of time when the voltage suitable to its own is applied is stored in a power supplying means 22, and supplied to an internal circuit 23 at a constant voltage level. <P>COPYRIGHT: (C)2009,JPO&INPIT |
