Triac - construction principle characteristic is that when G pole pole and T2 relative to T1, the voltages are positive, T2 is the anode of SCR, T1 is the cathode. On the contrary, when the G electrode with respect to the pole and T2 are negative when the voltage of T1, T1 becomes the anode, T2 is a cathode. Since the triac, the reverse characteristic curve has symmetry, so that it can be turned in either direction. Triac - trigger two control circuit between the respective cathode electrode and there 5V ~ 8V pulsating DC voltage generation SCR BT136S-600E, adjust potentiometer R2 can change the two SCR conduction angle, increasing the resistance R2 to a certain extent, would allow the two main thyristor block, so R2 also functions as a switch. SCR SCR _ BT134W-600E_ 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!