| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power unit and a power supply system that reduce standby power to be consumed by a system comprising a plurality of servers. <P>SOLUTION: A DC power supply da (5V DC) output from an AC/DC conversion part 12 is supplied to a control part 13. When a predetermined delay time elapses after the start of supplting the DC power supply da, it is checked whether or not a DC power supply db is supplied from the power unit 20 via an external power line 14. If it is not supplied, the DC power supply da is output to the power unit 20 via the external power line 14, or if it is supplied, an off-control signal fc is supplied to a switch part 11 and the DC power supply db is supplied. The control part 13 supplies the DC power supply da as a DC power supply ds to an electronic apparatus (for example, server 30) when the DC power supply db is not supplied, and when it is supplied, supplies the DC power supply db as the DC power supply ds to the server 30. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
