Triac detect two short wires will then A2, G very short instant, giving G pole with a positive trigger voltage, A2, A1 between the resistance of about 10 ohms. Then disconnect the A2, between G short wiring SCR C106M, multimeter reading should remain around 10 ohms. Interchangeable red and black pen wiring SCR 2P4M, the red pen then the second anode A2, black pen then the first anode A1. Likewise meter pointer deflection should not occur, resistance is infinite. With short connection to A2, G again very short moment between, plus resistance to G very negative trigger voltage, A1, A2 is between about 10 ohms. Then disconnect the A2, G extremely short wiring between the multimeter reading should remain unchanged, maintained at about 10 ohms. SCR to meet the above law, indicating that the test triac undamaged and three pins to determine the polarity is correct. 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 short for G-pole plus positive trigger signal, the resistance value is still about ten in Europe, after the G pole disengaged if the resistance is not Variable SCR C106D, then the tube after being triggered, in a direction T1 T2 a conduction state can be maintained, thus having a two-way trigger properties. Thus proving that these assumptions are correct. Otherwise it is assumed that inconsistent with the actual need and then make assumptions, 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 RXl0 file for more tube 3A and 3A, to be elected RXl file, otherwise it is difficult to maintain the conduction state. SCR BTA225, are fertile Electronics (certified), SCR provided by the Dongguan City is Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) (www.dgmydz.com) is Dongguan, FET leader, 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-electronics leader in the positive with the staff warmly welcome all inquiries negotiations to create a positive future Wal-electron better. You can also access (www.dgmydz.com/supply_details_44238715.html), for more information about the company.