Triac - voltage characteristic way thyristor when the voltage increases, the characteristics of the occurrence of the bending SCR, such as the characteristics of OA segment, the bend is called UBO: Forward breakover voltage thyristor, the voltage rise high to junction J2 after avalanche breakdown voltage, J2 junction avalanche multiplication effect occurs SCR BT136S-600E, a large amount of electrons and holes in the junction region triac - Another feature of this circuit triggering circuit is two Main SCR alternately conducting patch SCR, a forward voltage drop is another reverse drop, so there is no problem of reverse breakdown. However, when the applied voltage exceeds the transient blocking voltage, SCR1, SCR2 mislead pass, turned the extent determined by the potentiometer R2. Patch SCR, it is fertile Electronics (certified), SCR provided by the Dongguan City, is Wo Electronic Technology Co., Ltd. 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.