Triac Schematics - works when the anode A with a positive voltage, BG1 and BG2 tubes are in the enlarged state. At this point, if a positive trigger signal input from the control electrode G SCR BTA312, BG2 there ib2 base flow flowing through BG2 zoom, its collector current ic2 = β2ib2. Because direct collector electrode connected BG2 and BG1 base, so ib1 = ic. In this case, then by BG1 amplified current ic2, so BG1 collector current ic1 = β1ib1 = β1β2ib2. This current also flows back BG2 base SCR, table positive feedback, so ib2 increasing, and the results so positive feed cycle, two tubes of current surge SCR BTA212, SCR saturate guide pass. Bright with fingertip moving - SCR dimming control chip Abstract: Today SCR BTA208, to tell you a very competitive TRIAC dimming control chip SM7700P. What a little SM7700P achieve that is - when the night falls, even if only a lamp, you can also have the freedom to control one shade, bright changing world body:? SCR dimming according to people! The need to adjust the brightness of the lighting, to humanity, resource conservation, rational purpose lighting. So in the field of LED lighting and dimming scheme SCR dimmers applications emerged. The SCR dimming the core part of the program is to control management chip. As if the whole scheme of the brain chip, performance will directly affect the triac dimmer compatibility is good or bad, thereby affecting the dimming effect is good or bad. Ming Microelectronics according to market demand, the introduction of high-performance TRIAC dimming control management chip SM7700P. Today, small'll tell you about this very competitive TRIAC dimming control chip SM7700P. SCR BTA208, 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) (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_41162695.html), for more information about the company.