| 摘要 |
<p>PURPOSE:To maintain the actions of the information processing functions except that of a package even in case the package is loaded or unloaded for the maintenance purpose by controlling the power supplies for each package via a power supply control circuit. CONSTITUTION:The power is supplied to a power unit 11 of a power supply control circuit of an information processor (not shown in figure) via an AC cable 12. The unit 11 is connected to packages 14-1...14-N of the information processor via a DC cable 13. Then the control circuits 15-1...15-N are connected to the packages 14-1...14-N respectively. A power switch 21 is turned on for the circuits 15-1...15-N and a relay 20 works via a delay circuit 23 to supply the DC voltage to a DC cable 16-1 after a fixed time. Furthermore one of both sides of an AND circuit 25 is set at logic '1' via a delay circuit 27 and a power supply fixing signal line 17-1 is set at logic '0'. Thus it is possible to supply the power to each information processor and to confirm the control of said processor.</p> |
