By linking the DC relay contactor with power electronic device, the DC hybrid switch apparatus without switching arcing was designed and accomplished.
采用直流开关电器与电力电子器件相结合方式，设计并实现了能够实现无弧通断的直流混合开关电器。
2
The utility model relates to a controlled silicon power economizer for an AC contactor, belonging to the field of power electronic technology.
交流接触器可控硅节电器属于电力电子技术领域内一种可控硅的应用范围。
3
Method The automatic ventilation and gas exchange system consisted of 2 electronic modulators, alternating current contactor, 1 switch, 1 oxygen meter and some seamless steel tubes.