Triac - product identification and then swap the two pens, plastic packaging, repeat the above steps measured once blister packaging suppliers pointer should be slightly larger than the last time to a few dozen in Europe, then the SCR is good, and the trigger voltage (or current) is small. If you remain on A pole or pole disconnect G T2 pole position pointer immediately return ∞, then the current is too large or damaged SCR trigger triac - Isolated three golden rules triac Rule 7 . Good choice of gate trigger circuit plastic, avoid three quadrants conditions of Taiwan-funded factory blister packaging, can maximize the triac dIT / dt affordability. Rule 8. If the triac dIT / dt is likely to be exceeded, the load is preferably connected in series an inductance of several μH coreless, or a negative temperature coefficient thermistor. Electronic plastic boxes, are fertile Electronics (certified), plastic Dongguan City is provided by Wal-Electronic Technology Co., Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) (www.dgmydz.com) is Dongguan, FET leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Wal-electronics leader in the positive with the staff warmly welcome all inquiries negotiations to create a positive future Wal-electron better.