随着半导体器件的发展,双向可控硅的品种和规格日益增多。作为连续或断续控制的功率元件双向可控硅,与两个反并联的单向可控硅的作用一样,但省去了一个元件(包括散热片和相应的触发线路)和过压保护环节,因而结构简单、经济省事,越来越广泛地应用于开关、调压、调光、温控、异 With the development of semiconductor devices, triac varieties and specifications are increasing. As a triac with continuous or intermittent control, it acts like the two antiparallel thyristors, but omits one element (including the heatsink and corresponding trigger line) and overvoltage protection , So the structure is simple, economical and easy, more and more used in switching, voltage regulation, dimming, temperature control, different