Supply of new RD-91 package BTA25-600B triac thyristor has a variety of classifications. (A) press off, conduction and control Category: SCR off their conduction and control methods can be divided into ordinary thyristor, triac, reverse guide SCR, gate turn-off thyristor (GTO), BTG SCR, temperature and light control thyristor SCR other. (B) the pins and polarity classification: SCR their pins and polarity can be divided into two very SCR, three-pole and four-pole SCR SCR. Supply of new RD-91 package BTA25-600B ordinary triac thyristor three electrodes can be blocked with a multimeter ohm R × 100 gear to measure. We all know that is a PN junction between the triac, thyristor G, K (a), the equivalent of a diode, G is positive, K is negative, so the way thyristor, diode according to the test method to identify three Two poles pole SCR 60a, to measure its positive and negative resistance, resistance hour, multimeter black pen then the control electrode G, can teach just the demo circuit board used. Turn the power switch S, click the button switch SB, light bulb is good, does not light is bad. SCR 60a | 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) 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!