TYN1225 import supply manufacturers authentic way thyristor Thyristor thyristor characteristic "explosive." However, if the anode or the control electrode is applied reverse voltage thyristor can not be turned on. The role of the control electrode by applying a positive trigger pulse to the thyristor SCR, but can not make it off. So, the method used to make the thyristor is turned off it? Make conducting thyristor is turned off, the anode can disconnect the power supply (Fig. 3 switch S) or to maintain the anode current is less than the minimum conduction (called maintain current). If applied between the anode and cathode of the thyristor AC voltage or pulsed DC voltage, SCR BTA216, at zero voltage thyristor itself off. SCR 1, single, triac distinction: the first one of the two test poles SCR BTA140, if the positive and negative test pointer not moving (R × 1 block), may be A, K or G, A pole (unidirectional SCR) may be T2, T1 or T2, G pole (for triac). If there have been a measure indicative of tens to hundreds of Europe, it certainly is way thyristor. And a red pen for the connected K-pole, black pen then for G pole, namely A remaining pole. If the positive and negative test instructions are tens to hundreds of Europe, certainly for the triac. Then dial knob to R × 1 or R × 10 block retest, during which time the resistance must be slightly larger, slightly larger than a red pen is connected to G pole, black pen pole connected to T1, T2 remaining is extremely . 2, the function is not the same: the knob dial to R × 1 block, about 1 ~ 6A way thyristor, red pen then K pole, black pen together turned G, A pole, while adhering to the black pen without departing from the A pole Disconnect the G under extreme conditions, the pointer should indicate dozens of Europe to one hundred Euro SCR BTA412Y, this time the SCR has been triggered, and the trigger voltage is low (or trigger current is small). A pole momentary disconnect and then on again, the pointer should be returned ∞ position, then marked SCR outstanding. About 1 ~ 6A triac, red pen then T1 pole, black pen together pick G, T2 pole, black pen in ensuring the premise without departing from the T2 pole disconnect G pole, the pointer should be instructed to tens to hundred Europe (depending on the current size of the SCR, the manufacturers are not the same but different). Then swap the two pens, repeat the process measured once, pointer even slightly larger than the last time to a few dozen in Europe, it marked SCR outstanding, and the trigger voltage (or current) is small. If you insist on turning A pole or pole disconnect G T2 pole position pointer immediately return ∞, then clarify the SCR trigger current is too large or damaged. Figure 2 can be further measured way, on a one-way SCR, closing the switch K, lights should be lit, disconnect the lamp is still interest K off, or to clarify SCR damage. About triac, closing the switch K, lights should be lit, disconnect K, lights should be quenched. Then reverse battery, repeat the process, the outcome should be the same, it is good to clarify. Otherwise stated that the equipment has been damaged. SCR SCR _ BTA208_ 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_45273485.html), for more information about the company.