一种用于任意功率因数的过零触发器

A Cross-zero Trigger for Any Power Factor

介绍了一种新型过零触发器,电路简单、性能优越。由于采用了全周波处理和零电流触发方式,使之可以适用于任意功率因数负载;由于采用了晶闸管漏电触发方式,便可以使小小的触发器去触发大容量的晶闸管,而且只有一次隔离便可同时实现同步与触发两大功能,使触发器既不需同步变压器又不需脉冲触发器,实现全电子化。

The author introduced a new cross-zero trigger in this article. It has simple circuit and super performance. Because of the whole wave disposal and the zero current trigger mode, it can apply the load with any power factor. A small trigger can trigger a large capacity transistor by the transistor leakage trigger mode. Only once insulation can complete the synchronization and trigger functions. The trigger can be whole electronic with no synchronous transformer and impulse trigger.