| 摘要 |
PURPOSE:To avoid an instantaneous service interruption, by connecting a rectifying device between a load device and a switch device to prevent the reverse current and then connecting an accumulator between the rectifying device and the load device as well as between the load device and the negative side of a DC power supply respectively. CONSTITUTION:When the short circuit occurs at a load device 4, the voltage of an accumulator 12 suddenly drops. Accordingly, the voltage of a DC power supply 1 also lowers. However, the voltage of an accumulator 13 receives no offset of the voltage drop at the side of the power supply 1 owing to the preventing function of reverse current of a rectifying device 11. Thus the power is supplied consecutively to a load device 5, and the voltage drops slowly in accordance with the accumulated capacity of the device 13. Accordingly, the voltage of the device 13 becomes minute if the short circuit of the device 4 is quickly cut off by a switch device 2. |
