MR16 LED射燈MR16 LED燈驅(qū)動程序是與大多數(shù)電子兼容

　　MR16 LED射燈MR16 LED燈驅(qū)動程序是與大多數(shù)電子兼容

　　本文討論了低頻交流變壓器和電子變壓器，電源電流為MR16燈的操作之間的差異。這也解釋了為MR16鹵素燈和MR16的LED燈電流的差異。這些差別是很重要的因為電流通常可以防止MR16 LED燈與大多數(shù)電子變壓器的運行。本文將展示如何高亮度（HB）的LED驅(qū)動器的MR16燈優(yōu)化將使LED燈可以與大多數(shù)電子變壓器兼容性。然而，本文并沒有深入到調(diào)光器和電子變壓器組合的LED MR16燈的閃爍自由操作。

　　電阻性負載和電子變壓器的重要性

　　MR16鹵素燈正常工作的低壓交流電源的低頻交流變壓器、高頻電子變壓器通常產(chǎn)生。在大多數(shù)MR16應(yīng)用，由電力公司提供的高壓交流轉(zhuǎn)換為交流的高頻電子變壓器、低頻磁變壓器低壓。高頻電子變壓器有一個初級繞組，直接連接到120伏交流電/ 230伏交流電。它采用高開關(guān)頻率提供低電壓（12伏），應(yīng)用于MR16鹵素燈。

　　A low-frequency AC transformer is bulky， heavy， and occupies a lot of space. In comparison， an electronic transformer is small and compact， designed to power a resistive load with a typical power demand exceeding 20 W. When an electronic transformer is powered by 120 VAC/230 VAC， most will not work if the resistive load on the output is set to draw less than 20 W.

　　Conventional halogen MR16 lamps draw more than 20 W of power from the AC source under normal operating conditions， so they operate well with electronic transformers. MR16 LED lamps， however， only need 7 W of power to provide the same light output as a 35 W MR16 halogen lamp.