Triac - Detection DIP4 pin type ZC triac optocoupler triac T405-800T in measured resistance 肦 X files between any two feet, only between the G-T1 exhibits low resistance, positive and negative resistance is only tens of European thyristor BT136S-600E, and T2-G, positive and negative resistance between T2-T1 are infinite triac - Detection DIP4-pin type ZC three Triac optocoupler 2. After distinguishing G and T1 pole pole (1) identify the T2 pole, first assume that the rest of the feet in a foot of Tl pole SCR T435-600T, G pole for the other foot. (2) the black pen then T1 pole, the red pen then T2 pole, resistance is infinite. Followed by the red tip of the T2 and G _ SCR short circuit SCR T405-800T_ being provided by Wal-electronic Dongguan City is fertile Electronic Technology Co., Dongguan City is Wo Electronic Technology Co., Ltd (www.dgmydz.com) (www.dgmydz.com) strong, credible, FET and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead positive fertile electronic and you hand into the brilliant, for a better future!