然而，还有一种称为“三端交流开关”或简称Triac的半导体器件，也是晶闸管家族的一员，可以用作固态功率开关器件。但Triac相对于可控硅整流器（SCR）的最大优势在于它是一种“双向”开关器件。

This is exactly what [Daniel Jose Viana] did when his 110 volt Dremel tool popped its TRIAC after he plugged it into a 220 volt outlet. [Daniel] knew how the TRIAC functioned in the circuit and ...