Triac Schematics - aka "Triac" triac is a silicon single crystal for P1N1P2N2 four three-terminal device base material, is evolved on the basis of the ordinary SCR AC switch devices, namely, its English name TRIAC triac AC switch meaning, invented in 1957. Triac unidirectional conductivity switch can replace two parallel SCR reverse polarity, and only a trigger circuit. SCR has a turn-on and turn-off thyristor two states C106M, to distinguish from the appearance are: bolt-shaped, flat-shaped and flat-bottom shape categories. Because triac thyristor characteristics similar vacuum, so called silicon transistor gate through the international flow tube, called SCR T; and because thyristor controlled rectifier aspects initially applied to SCR C106G, so called silicon controlled rectifier elements, referred to as SCR SCR. Triac Schematics - phase control TRIAC phase control thyristor SCR is very similar, available DC signal, AC phase signal and the pulse wave signal to trigger, except those who are negative voltage V T1-T2, you can still trigger TRIAC. TRIAC can double conduction, can trigger the positive and negative half-cycle, use it as a full-wave power control, so in addition to the advantages of having a SCR TRIAC, more convenient AC power control. Figure 5 (a) for the phase control circuit TRIAC SCR 2P6M, only the appropriate adjustments RC time constant can change the excitation angle; Fig. 5 (b), 5 (c) are the excitation angle of 30 degrees when the VT1 -T2 and load voltage waveform, generally beyond the control of the load than TRIAC SCR small, generally speaking about 600V, 40A or less. SCR SCR _ T405-800T_ are fertile Electronics 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_48691430.html), for more information about the company.