Triac 1 : A three terminal, five-layer, silicon bistable switch comprising two anti-parallel thyristor elements in a single silicon element. Typically used to control small electric motors, e. g. in foodmixers and washing machines
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}