SCR is used as the role of non-contact switch, often used in automation equipment, instead of general purpose relays, with no noise, long life. Third is to play the role of the thyristor switch and the role of the regulator, often applied to the thyristor AC circuit, which is triggered at different times due to SCR C106G, so that only a part of the cycle of the alternating current flowing through it, through which only a part of the full voltage of the voltage, and thus can modulate the output voltage. Triac schematics - Structural diagram triac thyristor devices belong NPNPN five C106M, three electrodes are T1, T2, G. Although the form can be seen as two ordinary triac thyristor combinations, but in fact it is more than just seven transistors and resistors power integrated devices. Because the device can double conduction, so the two gate electrodes in addition to the main terminal G collectively, with T1, T2. Said that no longer divided into the anode or cathode. Characterized in that when G electrode with respect to the pole and T2 T1, the voltages are both positive, T2 is the anode, T1 is a cathode. On the contrary, when the G electrode with respect to the pole and T2 are negative when the voltage of T1, T1 becomes the anode of SCR BTA312, T2 is a cathode. Since the triac, the reverse characteristic curve has symmetry, so that it can be turned in either direction. Compared to the way thyristor, triac biggest difference is that we can double conduction in principle, no anode-cathode points, replaced with T1 and T2, the structure diagram in the following figure 2 (a) as shown If you do not consider the G-class is different, it is divided into Figure 2 (b) shows, we can see that the equivalent of two-way thyristor SCR made antiparallel BTA208, SCR, are fertile electronic Dongguan City is provided by Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-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 the electronics are fertile and you hand into the brilliant, for a better future! You can also access (www.dgmydz.com/supply_details_39938390.html), for more information about the company.