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  • 微电脑型RS-485显示电表(24*48mm/48*96mm)

    微电脑型RS-485显示电表(24*48mm/48*96mm) 特点: 5位数RS-485显示电表 显示范围-19999-99999位數 通訊协议Modbus RTU模式 宽范围交直流兩用電源設計 尺寸小,穩定性高 主要规格: 显示范围:-19999~99999 digit RS-485传输速度: 19200/9600/4800/2400 selective RS-485通讯位址: "01"-"FF" RS-485通讯协议: Modbus RTU Mode 显示幕: Red high efficiency LEDs high 10.16 mm (0.4") (MMX-RS-11X) Red high efficiency LEDs high 20.32 mm (0.8") (MMX-RS-12X) Red high efficiency LEDs high 10.16 mm (0.4")x2 (MMX-RS-22X) 参数设定方式: Touch switches 记忆方式: Non-volatile E²PROM memory 绝缘耐压能力: 2KVac/1 min. (input/power) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001

    标签: 48 mm 485 RS

    上传时间: 2015-01-03

    上传用户:feitian920

  • 微电脑型单相交流集合式电表(单相二线系统)

    微电脑型单相交流集合式电表(单相二线系统) 特点: 精确度0.25%满刻度±1位数 可同时量测与显示交流电压,電流,頻率,瓦特,(功率因數/視在功率) 交流電壓,電流,瓦特皆為真正有效值(TRMS) 交流電流,瓦特之小數點可任意設定 瓦特單位W或KW可任意設定 CT比可任意設定(1至999) 輸入與輸出絕緣耐压 2仟伏特/1分鐘( 突波測試強度4仟伏特(1.2x50us) 數位RS-485界面 (Optional) 主要规格: 精确度: 0.1% F.S.±1 digit (Frequency) 0.25% F.S.±1 digit(ACA,ACV,Watt,VA) 0.25% F.S. ±0.25o(Power Factor) (-.300~+.300) 输入负载: <0.2VA (Voltage) <0.2VA (Current) 最大过载能力: Current related input: 3 x rated continuous 10 x rated 30 sec. 25 x rated 3sec. 50 x rated 1sec. Voltage related input: maximum 2 x rated continuous 过载显示: "doFL" 显示值范围: 0~600.0V(Voltage) 0~999.9Hz(Frequency)(<20% for voltage input) 0~19999 digit adjustable(Current,Watt,VA) 取样时间: 2 cycles/sec. RS-485通讯位址: "01"-"FF" RS-485传输速度: 19200/9600/4800/2400 selective RS-485通信协议: Modbus RTU Mode 温度系数: 100ppm/℃ (0-50℃) 显示幕: Red high efficiency LEDs high 10.16 mm(0.4") 参数设定方式: Touch switches 记忆型式: Non-volatile E²PROM memory 绝缘抗阻: >100Mohm with 500V DC 绝缘耐压能力: 2KVac/1 min. (input/output/power) 1600 Vdc (input/output) 突波测试: ANSI c37.90a/1974,DIN-IEC 255-4 impulse voltage 4KV(1.2x50us) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001

    标签: 微电脑 单相交流 单相 电表

    上传时间: 2015-01-03

    上传用户:几何公差

  • 集合式直流电能表(小功率的)

    集合式直流电能表(小功率的) 特点: 精确度0.05%满刻度±1位数 可同时量测与显示/直流电压/电流/瓦特(千瓦)/瓦特小时(千瓦小时) 电压输入(DC0-99.99V/0-600.0V)自动变档功能 显示范围0-9999(电流/瓦特/千瓦),0至99999999(八位數瓦特小时)可任意规划 数位RS-485 界面 (Optional) 主要规格: 辅助电源消耗功率:<0.35VA(DC12V/DC24V) <0.5VA(DC48V) <1.5VA(AC90-240V(50/60Hz)) 精确度: 0.05% F.S. ±1 digit (23 ±5℃) 输入范围:Auto range(DC0-99.99V/0-600.0V(DC voltage)) 输入抗阻:>5MΩ(DC voltage) 取样时间:10 cycles/second(total) 过载显示: " doFL " 显示值范围: 0-9999 digit(DCA/W(KW)) 0-9999999.999 digit(WH/(KWH)) RS-485传输速度: 19200/9600/4800/2400 selective RS-485通讯位址: "01"-"FF"(0-255) RS-485通信协议: Modbus RTU Mode 温度系数: 50ppm/℃ (0-50℃) 显示幕:Bight Red LEDs high 10.16 mm(0.4") 参数设定方式: Touch switches 记忆方式: Non-volatile E²PROM memory 绝缘耐压能力:2KVac/1min.(input/output)(RS-485(Isolating)) 1600 Vdc (input/output) (RS-485(Isolating)) 使用环境条件: 0-50℃(20 to 90% RH non-condensed) 存放环境条件: 0-70℃(20 to 90% RH non-condensed) CE认证: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001

    标签: 直流 电能表 小功率

    上传时间: 2013-11-20

    上传用户:s363994250

  • 电池组电压测量的研究

      Automobiles, aircraft, marine vehicles, uninterruptiblepower supplies and telecom hardware represent areasutilizing series connected battery stacks. These stacksof individual cells may contain many units, reaching potentialsof hundreds of volts. In such systems it is oftendesirable to accurately determine each individual cell’svoltage. Obtaining this information in the presence of thehigh “common Mode” voltage generated by the batterystack is more diffi cult than might be supposed.

    标签: 电池组 电压 量的研究

    上传时间: 2013-10-24

    上传用户:kang1923

  • SL811开发资料_包含源程序_电路图_芯片资料

    SL811开发资料_包含源程序_电路图_芯片资料:SL811HS Embedded USB Host/Slave Controller.The SL811HS is an Embedded USB Host/Slave Controller capable of communicate with either full-speed or low-speed USB peripherals. The SL811HS can interface to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others. The SL811HS USB Host Controller conforms to USB Specification 1.1.The SL811HS USB Host/Slave Controller incorporates USB Serial Interface functionality along with internal full-/low-speed transceivers.The SL811HS supports and operates in USB full-speed Mode at 12 Mbps, or at low-speed 1.5-Mbps Mode.The SL811HS data port and microprocessor interface provide an 8-bit data path I/O or DMA bidirectional, with interrupt support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others. Internally,the SL811HS contains a 256-byte RAM data buffer which is used for control registers and data buffer.The available package types offered are a 28-pin PLCC (SL811HS) and a 48-pin TQFP package (SL811HST-AC). Both packages operate at 3.3 VDC. The I/O interface logic is 5V-tolerant.

    标签: 811 SL 开发资料 源程序

    上传时间: 2013-12-22

    上传用户:a82531317

  • Proteus教程中涉及的基本概念

      基本的编辑工具(GENERAL EDITING FACILITIES)   对象放置(Object Placement)   ISIS支持多种类型的对象,每一类型对象的具体作用和功能将在下一章给出。虽然类型不同,但放置对象的基本步骤都是一样的。   放置对象的步骤如下(To place an object:)   1.根据对象的类别在工具箱选择相应模式的图标(Mode icon)。   2. Select the sub-Mode icon for the specific type of object.   2、根据对象的具体类型选择子模式图标(sub-Mode icon)。   3、如果对象类型是元件、端点、管脚、图形、符号或标记,从选择器里(selector)选择你想要的对象的名字。对于元件、端点、管脚和符号,可能首先需要从库中调出。   4、如果对象是有方向的,将会在预览窗口显示出来,你可以通过点击旋转和镜象图标来调整对象的朝向。   5、最后,指向编辑窗口并点击鼠标左键放置对象。对于不同的对象,确切的步骤可能略有不同,但你会发现和其它的图形编辑软件是类似的,而且很直观。   选中对象(Tagging an Object)   用鼠标指向对象并点击右键可以选中该对象。该操作选中对象并使其高亮显示,然后可以进行编辑。

    标签: Proteus 教程 基本概念

    上传时间: 2013-11-09

    上传用户:2525775

  • 系统可用编辑器1. Overview 2. System Requirements 3. Contents of the Distribution Package 4. List of Availab

    系统可用编辑器1. Overview 2. System Requirements 3. Contents of the Distribution Package 4. List of Available Command Line Flag Options 5. Contents of the Extracted Files 6. Installing the Software in Interactive Mode 7. Installing the Software in Silent Mode 8. Installing the INF Files Prior to OS Installation 8A. Installing the Windows* XP INF Files Prior to OS Installation

    标签: Distribution Requirements Overview Contents

    上传时间: 2015-02-23

    上传用户:wab1981

  • This program will ask how many numbers you want to find the average of, then it will allow you to en

    This program will ask how many numbers you want to find the average of, then it will allow you to enter your numbers(yes they can even be decimals) then it will calculate the mean, median, Mode and range of what you enter.

    标签: will you program average

    上传时间: 2015-03-23

    上传用户:skhlm

  • This program demonstrates how to do disconnected briefcase applications with ADO. When the Connected

    This program demonstrates how to do disconnected briefcase applications with ADO. When the Connected checkbox is unchecked the application is switched into offline Mode. If the application is exited at that point then the data is persisted to a file on disk (along with any edits to the data). When the application is restarted it will load the persisted data if present, otherwise it will fetch the data from the database.

    标签: demonstrates applications disconnected Connected

    上传时间: 2015-03-24

    上传用户:xcy122677

  • 通子的考试系统 本程序版权属于通子 程序功能: 1。考生可以选择科目进行考试 2. 考过科目不再重新登陆考试 2。考题时随机的

    通子的考试系统 本程序版权属于通子 程序功能: 1。考生可以选择科目进行考试 2. 考过科目不再重新登陆考试 2。考题时随机的,避免考生之间互相抄袭。 3。考题为五题,设定30秒后自动提交 4。提交后可以直接得到你的成绩,并知道你是否通过了考试了 5. 可以了解你的成绩与总成绩的对比 程序优缺点: 1。未使用javaBean技术。 2。使用的是声明语句在Conn.jsp,功能是进行数据库连接; 3。使用html处理的不好,页面不甚美观。 4。未采用MVC,M(Mode-database),V(view-jsp),C(controller-servlet). 程序流程: 进入 考生 —— 登录界面 ——进入——测试——提交——成绩 login.jsp —— test.jsp —— score.jsp test.mdb test.mdb test.mdb 抱歉: 由于时间不足,未能把java(2)班全体同学的信息全部添加到数据库中。 附: java(2)班全体同学信息打包在里面了,有意者可以添加。 希望对此程序作改进的有我联系。我的QQ:120244312 E-Mail:zuotongyousai@163.com

    标签: 程序 随机

    上传时间: 2015-03-25

    上传用户:wfeel