| 摘要 |
PURPOSE:To prevent the interruption of a system resulting from taking much time bypassing battery supply source at the interruption of both input power supplies by starting power supply immediately when it is detected that both external input power supplies are in terrnpted. CONSTITUTION:The system is provided with data transmitters 12, 13 for active and standby systems, power supply circuits 14, 15 for active and standby systems and a DC power supply for active and standby systems. When only one of external input power supplies is interrupted, a DC voltage is applied from a battery built in either of the DC power supply for active and standby systems after the lapse of a prescribed time. Moreover, when both external power supplies are interrupted, the DC voltage is applied from both batteries built in the DC power supply for active and standby systems immediately. Thus, the event of the interruption of the system resulting from taking much time constituting bypassed battery supply is prevented. |
