找到约 9200 条相关结果
... suitable for the constant current source of the LED backlight, which comprises a mirror self regulating constant ... constant current principle to drive the multi-channel LED light string, which makes the light emitting intensity ...
... higher than 100 mA. LT3496, a three-channel LED driver, produced by Linear Technology Corporation, has the ... to choose the components were also described. Furthermore, LED dimming was realized by using NE555 to design ...
... -saving lamp and other traditional lamps, high-power LED lighting system is more energy-saving and environmental ... other high power applications. The traditional high power LED lighting drive circuit is composed of AC/DC ...
... effect of the neonatal jaundice phototherapy device LED light source,a LED drive circuit was designed for the ... modulation Dimming（ PWM dimming） for monochromatic LED lights with four different peak wavelength,to achieve ...
... high , energy saving etc advantages , LED lighting has been widely used. For LED＇s triac dimming methods ... . In the world many IC companies have produced LED triac dimming control ICs. This paper mainly discusses ...
随着科学技术的不断进步与发展，LED灯逐渐地取代了传统的白炽灯 ... 了自动对声光进行检测并控制LED灯亮灭的目的。 首先，使用NCP1200芯片设计的LED驱动电路，同时具有高功率因数整流 ... 高等优点。业界普遍认为1W的LED照明效果等同于3~5倍的节能灯 ...
... 依据CIE标准，开发了一套LED发光强度自动测量系统。该系统 ... 系统时，本文首先介绍了有关LED光度测量的基本理论及测量的 ... 及处理。然后，对典型的LED样品进行了测量，并利用Matlab ... 得出了1W级“食人鱼”白光LED发光强度在CIE标准条件下及 ...
... 研究可见太阳光波段，基于新型光源LED设计并制备了可见太阳光模拟器。 ... ，设计并制作了一种由LED(Light Emitting Diode，半导体发光二极管)、 ... ; （1）分析大功率LED主要性能特点，建立常用LED光谱数据库； （ ...
随着科学技术的不断进步与发展，LED灯已经进入千家万户，在我们的 ... 高领域，如今社会已经开始进入LED智能化社会。 但是目前大部分的 ... 使用NCP1200芯片与单片机结合设计的LED驱动电源，可以同时实现170V-250V ... 结果表明，本学位论文设计的LED灯驱动器采用双平均值检测技术， ...
... 的主要内容是对太阳能与半导体LED照明控制系统的研究，结合目前 ... 论文的研究内容和成果对太阳能LED照明系统的推广应用具有理论参考 ... ; 本文围绕太阳能光伏发电和白光LED照明技术，阐述了相关的基础理论 ... 中的硅太阳电池、铅酸蓄电池、LED负载等组成部分的配置。论文重点 ...
