Triac - Golden Rule Isolated Triac switch if using hard-line, spiral wire or shielded cable. Between the gate and MT1 plus resistance 1kΩ or less. High frequency bypass capacitor and resistor in series between the gate. Another solution, use H series of low sensitivity triac. Rule 5. If dVD / dt or dVCOM / dt can cause problems, triac - product identification and then swap the two pens, repeat the above steps measured once SCR BT134W-600E, pointer even larger than the last ten several to several tens of European thyristor, SCR indicates good and the trigger voltage (or current) is small. A pole or if T2 remains on pole pole disconnect G pointer immediately return ∞ position, then the SCR trigger current is too large or damaged SCR BT137S-600E_ positive Wo Electronics (certified) _ SCR provided by the Dongguan City is fertile Electronic Technology Co., Dongguan City is Wo Electronic Technology Co., Ltd (www.dgmydz.com) (www.dgmydz.com) Dongguan, Guangdong, FET leaders, 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-e-leadership in the positive with the staff warmly welcome all inquiries negotiations to create a positive fertile electronic better future.