ns 2.28 下 SPAN节能协议源码，含有IEEE 802.11 PSM功能，SPAN协议等
上传时间： 2013-12-14
上传用户：ljt101007
The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC converter (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an input supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and SPAN a range wide enough to account for resistance, potentiometer and DCDCconverter tolerances (27.6V to 36.7V).
上传时间： 2014-12-23
上传用户：781354052
Digital-to-analog converters (DACs) are prevalent inindustrial control and automated test applications.General-purpose automated test equipment often requiresmany channels of precisely controlled voltagesthat SPAN several voltage ranges. The LTC2704 is ahighly integrated 16-bit, 4-channel DAC for high-endapplications. It has a wide range of features designed toincrease performance and simplify design.
上传时间： 2013-11-22
上传用户：元宵汉堡包
Analog Inputs and Outputs in an S7 PLC are represented in the PLC as a 16-bit integer. Over the nominal SPAN of the analog input or output, the value of this integer will range between - 27648 and +27648. However, it is easier to use the analog values if they are scaled to the same units and ranges as the process being controlled. This applications tip describes methods for scaling analog values to and from engineering units.
上传时间： 2013-11-17
上传用户：3294322651
This paper presents the results of the Finnish national "Technology Vision of the Future Distribution Network" project. The aim of the project was to create a technology vision of future distribution networks. Because the life SPAN of networks is very long, a long term vision is very important for guiding network investments and technology development.
标签： the Distributio Technology national
上传时间： 2013-12-18
上传用户：李彦东
利用javascript在一个div快内纵向计算打印出该行的圆上两点，采用生成SPAN块的方法打印点
标签： javascript div 计算 打印
上传时间： 2014-12-04
上传用户：lgnf
演示中使用的数据库为省、市、县三级数据库 演示程序实现了省、市、县三级联动（ajax技术） 程序调用方法： 1：把 <script language="javascript" src="js/jquery.js"></script> <script language="javascript" src="js/firste_city.js"></script> 贴到网页<head></head>之间 2：把 <SPAN id="f"></SPAN><SPAN id="floading"></SPAN><SPAN id="ferr"></SPAN> 贴到需要显示省、市、县下拉列表的地方 程序中使用了jquery库，感谢其作者John Resig。
标签： javascript language script ajax
上传时间： 2017-05-26
上传用户：6546544
简单的介绍CCS样式表的运用 Class id的区分 div和SPAN的概述
标签： css
上传时间： 2015-06-28
上传用户：liux11
Lithium–sulfur (Li–S) batteries with high energy density and long cycle life are considered to be one of the most promising next-generation energy-storage systems beyond routine lithium-ion batteries. Various approaches have been proposed to break down technical barriers in Li–S battery systems. The use of nanostructured metal oxides and sulfides for high sulfur utilization and long life SPAN of Li–S batteries is reviewed here. The relationships between the intrinsic properties of metal oxide/sulfide hosts and electrochemical performances of Li–S batteries are discussed. Nanostructured metal oxides/ sulfides hosts used in solid sulfur cathodes, separators/interlayers, lithium- metal-anode protection, and lithium polysulfides batteries are discussed respectively. Prospects for the future developments of Li–S batteries with nanostructured metal oxides/sulfides are also discussed.
上传时间： 2017-11-23
上传用户：653357637
