噜噜中文字幕一区二区,日本系列有码字幕中文字幕,国产自拍精品在线免费观看,国产一区二区三区我不卡,少妇下面好紧好多水真爽,人妖在线一区二区三区,三级日本理论在线观看,av成人一区二区三区,夜夜高潮夜夜爽免费观看,人妻少妇精品视频一区二区三

Welcome to Hangzhou Huatai Intelligent Technology Co., Ltd.!
Language:

LED lighting useful information

LED lighting useful information

LED (Light Emitting Diode). There are two types of LED lighting; Mains voltage and Low voltage, both of which operate on DC voltage via converters, either in the lamp itself or in the Driver. 

Mains voltage LED lamps are simple and can be used to replace a conventional light source, when they both have the same lamp holder requirements. (The most popular change is using a GU10 LED in a GU10 fitting. Here you will be substituting LED for a Halogen light source, so the level of illumination will be much lower). 

Low voltage LED lamps require a transformer (Driver). The transformer converts the 230 volts into either usually 12 or 24 volts DC. The number of lamps that can be used on a transformer is dependent on the total wattage of the lamps, which should be less than that of the total wattage capacity of the transformer. 

LED lighting works by passing a current through a diode element. Where a conventional lamp heats up a filament, which then glows, an LED gives off light when current flows through it, with almost no heat generated. An LED runs cool and is great where heat is an issue.

91在线观看国产自拍| 午夜性无码专区| 亚洲成a人片在线观看无码| 亚洲另类激情专区小说婷婷久| 一区二区三区日本在线| av免费播放网站在线| 日本老熟妇乱| 国产99re在线观看只有精品| 中文字幕国内一区二区| 亚洲毛片一区二区在线| 天堂√在线中文官网在线| 欧美一级三级在线观看| 日本精品国产1区2区3区| 在线播放草猛免费视频| 精品丰满人妻无套内射| 香蕉成人啪国产精品视频综合网| 亚洲中文字幕熟女五十| 在线日本看片免费人成视久网| 孕妇特级毛片ww无码内射| 91免费播放日韩一区二天天综合福利电影| 亚洲av色香蕉一区二区三区蜜桃| 亚洲国产中文字幕在线视频综合| 亚洲日韩国产一区二区三区在线| 乱伦一区二| 丰满熟女人妻一区二区三区| 天天做天天爱夜夜爽毛片毛片| 玩弄少妇高潮ⅹxxxyw| 久久亚洲第一视频黄色| 日韩精品免费av一区二区三区| 国产无套粉嫩白浆在线| 97久久久久人妻精品专区| 一本一道久久a久久精品综合蜜桃| 国产91色综合久久高清| 亚洲 另类 日韩 制服 无码| 国产精品美女久久久久久大全| 伊人狼人激情综合影院| 国产精品成熟老女人| 中国亚洲女人69内射少妇| 水蜜桃视频在线观看免费18| 偷拍夫妻视频一区二区| 亚洲国产精品成人无码区|