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- With the development of hand-held devices which have several white LEDs as their backlights, the white LED boost converter is in largely demand. 随着使用白光LED作为背光光源的手持彩屏产品的发展,对白光LED驱动电路的需求也越来越大。
- More light and higher efficacy for white LEDs are essential to opening new lighting markets and to expand the reach of LED lighting into residential lighting segments. 更亮,更高效,是白光LED开启新的照明市场,并且扩大在家居照明中市场份额的决定性因素。
- LT3466 is a full function dual step-up DC/DC converter specifically designed to drive up to 20 white LEDs,possessing the functions of soft-start,open LED protection,undervoltage lockout and so on. LT3466是凌特公司生产的一款全功能双输出升压型DC/DC转换器,可驱动多达20个白光LED,并具有软启动、LED开路保护及欠压闭锁等功能。
- Burgess et al.LED Update:Alternate Packag ing Improves White LEDs[J].Photonics Spectra,2005,39(7):118. 龙乐.;发光二极管封装结构与技术[J]
- The solid state lighting is mainly based on phosphor luminescence conversion of white LEDs. 荧光粉光转换白光LED是当今固态照明的主流方案。
- Typically, a small panel LCD display backlight is implemented with a couple of white LEDs. 一般而言,小型LCD显示屏背光照明都是用一组白光LED来实现的。
- The ADM8845 charge pump is designed for driving up to six white LEDs in parallel while ensuring uniform brightness of a backlit LCD display. ADM8845电荷泵适合用于驱动高达6只并联的白色LED,同时能够保证背光照明液晶显示的亮度均匀。
- Finally,by using the Arrhenius relationship,the lifetime of the white LEDs used in our experiments was calculated as 23 000 h. 最后使用阿列纽斯关系计算出所用白光LED的寿命为2.;3万小时。
- White LEDs combine the low power consumption and long life of fluorescent bulbs with the pleasing light spectrum of incandescent bulbs. 白光LED兼具省电灯泡耗能低、寿命长,以及白炽灯泡光谱宜人的优点。
- The ZXLD1350 is a PFM inductive back converter designed to drive up to three 1W series connected white LEDs from a 12V source. ZXLD1350做为一个PFM诱导回落转换器,是专为驱动3个1瓦的由12V电源供给的白色串联LED设计的。
- Stabiliser rams are now mounted with reflectors and 10,000hr white LEDs, which can be wired into the truck’s electrical system to flash in sequence. 减震器则安置了传感器和寿命达10000小时的白光LED(白光可发光二极管),这些二极管可通过电缆接到卡车的电气系统,从而可按顺序发光。
- It has also been verified the Arrhenius model is suitable for white LEDs,the acceleration equation is: lgt = a + b(1/T) Here, a and b are constants dependence on types of LEDs. 通过实验验证了Arrhenius模型也适用于白光LED器件,器件使用寿命t以温度T为加速变量的加速方程为: lgt = a + b(1/T)(系数a、b随具体器件的种类调整)。
- A key step will be the design of the return, or uplink, signal systems by which the wireless devices communicate with the white LEDs and thus the backbone infrastructure. 其中一个关键步骤就是回传(或上连)讯号系统的设计,用来让无线装置和白光LED沟通,以便和骨干网路沟通。
- These infrared-based optical wireless systems will most likely be supplanted at some point by local-area networks based on white LEDs, which offer still more bandwidth, along with other benefits. 这类红外线光学无线系统再过一段时间,极可能被白光LED区域网路系统取代,因为白光LED能提供更多频宽及其他好处。
- A white lead pigment, sometimes used in cosmetics. 铅白一种白色铅颜料,有时用于化妆品制造
- I heard John was the republican's great white hope. 我听说约翰是共和党人寄予巨大希望的人。
- The land is laid down with red or white clover. 这块土地种上了红花和白花苜蓿。
- This cloth has a pattern of blue and white squares. 这种布有蓝白格子的图案。
- England are playing in the blue and white strip. 英格兰队穿著蓝白色运动衣进行比赛。
- Black and white show a striking contrast. 黑和白形成明显的对比。