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SPAN

  • ns 2.28 下 SPAN節(jié)能協(xié)議源碼

    ns 2.28 下 SPAN節(jié)能協(xié)議源碼,含有IEEE 802.11 PSM功能,SPAN協(xié)議等

    標簽: 2.28 SPAN ns 節(jié)能

    上傳時間: 2013-12-14

    上傳用戶:ljt101007

  • 利用數(shù)字電位器調(diào)整并校準升壓型DC-DC轉(zhuǎn)換器

    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).

    標簽: DC-DC 數(shù)字電位器 升壓型 校準

    上傳時間: 2014-12-23

    上傳用戶:781354052

  • 高集成四通道工業(yè)控制應用的電壓輸出DAC

      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.

    標簽: DAC 集成 四通道 工業(yè)

    上傳時間: 2013-11-22

    上傳用戶:元宵漢堡包

  • 西門子S7-300 PLC模擬量轉(zhuǎn)換

    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.

    標簽: 300 PLC 西門子 模擬量

    上傳時間: 2013-11-17

    上傳用戶:3294322651

  • This paper presents the results of the Finnish national "Technology Vision of the Future Distributio

    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.

    標簽: the Distributio Technology national

    上傳時間: 2013-12-18

    上傳用戶:李彥東

  • 利用javascript在一個div快內(nèi)縱向計算打印出該行的圓上兩點

    利用javascript在一個div快內(nèi)縱向計算打印出該行的圓上兩點,采用生成SPAN塊的方法打印點

    標簽: javascript div 計算 打印

    上傳時間: 2014-12-04

    上傳用戶:lgnf

  • 演示中使用的數(shù)據(jù)庫為省、市、縣三級數(shù)據(jù)庫 演示程序?qū)崿F(xiàn)了省、市、縣三級聯(lián)動(ajax技術) 程序調(diào)用方法: 1:把 <script language="javascript" src="

    演示中使用的數(shù)據(jù)庫為省、市、縣三級數(shù)據(jù)庫 演示程序?qū)崿F(xiàn)了省、市、縣三級聯(lián)動(ajax技術) 程序調(diào)用方法: 1:把 <script language="javascript" src="js/jquery.js"></script> <script language="javascript" src="js/firste_city.js"></script> 貼到網(wǎng)頁<head></head>之間 2:把 <SPAN id="f"></SPAN><SPAN id="floading"></SPAN><SPAN id="ferr"></SPAN> 貼到需要顯示省、市、縣下拉列表的地方 程序中使用了jquery庫,感謝其作者John Resig。

    標簽: javascript language script ajax

    上傳時間: 2017-05-26

    上傳用戶:6546544

  • CSS樣式表實用

    簡單的介紹CCS樣式表的運用 Class id的區(qū)分 div和SPAN的概述

    標簽: css

    上傳時間: 2015-06-28

    上傳用戶:liux11

  • 用于鋰 - 硫電池的納米結構金屬氧化物和硫化物(1)

    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.

    標簽: 電池 納米結構 硫化物 金屬氧化物

    上傳時間: 2017-11-23

    上傳用戶:653357637

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