The thyristor is a power semiconductor that is used as a switch, either to conduct or interrupt the electric current, this component is known as power because they are used to handle large amounts of current and voltage, compared to the others semiconductors that handle relatively low quantities. When talking about thyristors, the thyristor is commonly cataloged as an SRC (silicon controlled rectifier), but this is not quite correct since this type is the most popular and well known but it is not the only one that exists.