When detecting standby signal, microcomputer gives structure to relay switch to cut off the current, then standby power is eliminated so as to realize energy saving.
Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.
介绍了一种采用CMOS数字电路、数字拨盘开关整定、无辅助电源的断电延时继电器的组成及工作原理。
3
The proposed method can be used both on-line and off-line in the relay parallel setting and coordination of a large-scale power system.