断电延时型时间继电器的研究与设计

介绍了断电延时型继电器的典型原理线路及在使用过程中的注意事项，给出了工作时序图和继电器中所使用的2绕组闭锁继电器内部线圈及触点框图。具有延时精度高、断电延时长、可控制较大负载、抗干扰能力强等特点的断电延时继电器将在自动控制领域中起到更为重要的作用。

Study and Design of Powerdown Time Delay Relay

Introduction was made to the typical principle circuit of powerdown time delay relay and cautions in the using process, working sequential chart and block diagram of internal coils and contacts of 2-winding locking relay used in the relay given out.The powerdown time delay relay is with high accuracy in time delay,long time delay in powerdown,large load control and strong capability in anti-interference etc features.Such kind of relay will play a more important role in automatic control field.