Triac - Detection DIP4 pin type ZC TRIAC optocouplers 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, G pole for the other foot. (2) the black pen then T1 extremely SCR BT137S-600E, the red pen then T2 pole SMD SCR, the resistance is infinite. Followed by the red tip of the T2 and G shorted triac - Golden Rule Isolated Triac switch rules 1. For conducting thyristor (or triac) SCR BT136S-600E, must There are gate current ≧ IGT, until the load current reaches ≧ IL. This condition must be met, according to the lowest temperature likely to be encountered consider SCR T435-600T, SCR, is 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!