Detection methods described below use a multimeter RXl profile determination Triac electrode method, and also the ability to check the trigger. (3) the red pen then T1 very, very black pen then T2, then T2 and G shorted SCR BTA208, coupled to G extremely positive trigger signal, the resistance value is still about ten in Europe, and very disengaged after G If the resistance is constant, then the tube after the trigger on a T1 T2 direction but also to maintain the conduction state SCR BTA216, thus triggering a two-way nature. Thus proving that these assumptions are correct. Otherwise it is assumed that inconsistent with the actual need and then make assumptions SCR, repeat the above measurements. Obviously, the identification G, T1, in the process, it checks the ability to trigger the TRIAC. If it is assumed to measure according to which, do not make Triac trigger conduction, proved to Pat damaged pipe. For pipe lA, and can also be used to detect the SCR file RXl0 BTA312, 3A and 3A for more than a pipe, to be elected RXl file, otherwise it is difficult to maintain the conduction state. Triac structure principle and application of typical applications zero trigger AC solid state relays (AC-SSR) internal circuitry. Includes input circuit, optocouplers, zero trigger circuit, switching circuit (including bidirectional thyristor), the protection circuit (RC absorption network). When coupled with the input signal VI (usually high), and AC load power supply voltage through the zero point, Triac is triggered, the load power is turned on. Solid state relay has a drive power of small, non-contact, low noise, anti-jamming, pull, release time is short, long life, can be compatible with TTL\CMOS circuit can replace the traditional electromagnetic relay SCR T435-800T, SCR, 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!