| 摘要 |
PROBLEM TO BE SOLVED: To enable plural power sources to be turned on or turned off with a single main switch, and moreover, enable power to be supplied at required timings, even to multipower source load requiring different plural voltages by providing every power source with a switch means to turn on or turn off the power source, excluding the main power source. SOLUTION: A first power source 5 is connected to a commercial AC power source 1 through a main switch 2 and a switch 4 for control. Units A1 , A2 ,..., An in system A are connected to the first power source 5. Units B1 , B2 ,..., Bn in system B are connected to a second power source 8. Units C1 , C2 ,..., Cn in system C are connected to a third power source 9. A power sequence controller 11 connected to the first power source 5 turns on or turns off the second power source 8 by a first semiconductor switch 12, and also it turns on or turns off the third source 9 by a second semiconductor switch 13 and a control signal. |
