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. Three thyristor switch is to play the role and the role of the regulator, often applied to the AC circuit, since it is triggered at different times, so that only a portion of it by the alternating current cycle, voltage is only through its full voltage part, and thus play a role in regulating the output voltage. Way thyristor trigger characteristic test for larger power SCR turn-on voltage drop due to a larger holding current difficult to maintain, causing poor conduction state, you should at the SCR anode (A) on A dry cells connected in series thyristor BTA412Y, 3 test thyristor circuit shown in (b) as shown, in order to avoid false positives. For high-power SCR should be on the circuit of Figure 3 (b) of the previous section and then string batteries, so test the effect is obvious. Generally in the following way thyristor 10A test with Figure 3 (a) coupling circuit shown; 10A with an SCR 100A Figure 3 (b) connecting the circuit shown, more than one-way controlled test 100A Silicon should figure 3 (b) on a string and then dry. On the basis of the test-way thyristor SCR on BTA312, for other types of SCR, according to its basic structure, can also be used to test multimeter SCR BTA412Y, are fertile Electronics (certified), controllable Silicon is provided by Dongguan City is fertile Electronic Technology Co., 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_41645385.html), for more information about the company.