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  • G3-PLC技术使电动汽车智能化充电

    Abstract: This article explores criteria necessary for reliable communication between electric vehicles (EVs) and electric vehicleservice equipment (EVSE). Data will demonstrate that a G3-PLC system has already met the criteria established by the automotiveand utility industries. Multiple internat ...

    /dl/24050.html

    标签: PLC 电动汽车 智能化 充电

    上传时间: 2014-12-24

    上传用户:逗逗666

  • 电源调整与虚拟地

    Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the ...

    /dl/24151.html

    标签: 电源调整 虚拟地

    上传时间: 2013-10-23

    上传用户:wushengwu

  • 测量和控制电路的热管理技术

      Designers spend much time combating thermal effects incircuitry. The close relationship between temperature andelectronic devices is the source of more design headachesthan any other consideration.

    /dl/24362.html

    标签: 测量 控制电路 管理技术

    上传时间: 2013-10-17

    上传用户:风之骄子

  • 雪崩光电二极管的偏置电压和电流检测电路

      Avalanche photodiodes (APDs) are widely utilized in laserbased fiberoptic systems to convert optical data intoelectrical form. The APD is usually packaged with a signalconditioning amplifier in a small module. An APD receivermodule and attendant circuitry appears in Figure 1. TheAPD modul ...

    /dl/24376.html

    标签: 雪崩 光电二极管 偏置电压 电流检测电路

    上传时间: 2013-10-25

    上传用户:brain kung

  • 测量和控制的实用电路分析

      This collection of circuits was worked out between June1991 and July of 1994. Most were designed at customerrequest or are derivatives of such efforts. All representsubstantial effort and, as such, are disseminated here forwider study and (hopefully) use.1 The examples areroughly arranged ...

    /dl/24386.html

    标签: 测量 控制 实用电路

    上传时间: 2013-11-15

    上传用户:凌云御清风

  • 西门子S7-300 PLC模拟量转换

    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 ra ...

    /dl/29048.html

    标签: 300 PLC 西门子 模拟量

    上传时间: 2013-11-17

    上传用户:3294322651

  • 基于CH341A的USB串口通讯设计

    为解决当前计算机串行通讯接口只有USB,难以满足旧型号设备或某些单片机要求RS232通讯的问题,设计出两款RS232/USB电路。采用CH341A与MAX223集成电路芯片构建标准9线RS232/USB通用接口转换器,无需编程。采用CH341A与PIC16F877A构建单片机与计算机之间的USB通讯电路,软件遵循RS232通讯协议,硬件进行电平转换。实际使用表 ...

    /dl/29127.html

    标签: 341A 341 USB CH

    上传时间: 2013-11-03

    上传用户:siying

  • 基于C8051F040的以太网-CAN转换电路设计

    以太网和CAN总线应用广泛,但由于其通信协议不同,两种总线器件间无法进行数据通信,因此,设计了基于CP2200与C8051F040的以太网总线与CAN总线接口转换电路,并给出部分相关硬件电路与软件设计分析。在保证数据完整和协议可靠的前提下,通过握手协议和简化的以太网协议,不仅实现了以太网数据与CAN数据的转发,同时还顺利的 ...

    /dl/29170.html

    标签: C8051F040 CAN 以太网 转换

    上传时间: 2013-10-15

    上传用户:Ants

  • 工控软件组态王与单片机多机串口通讯的设计

    详细介绍工控软件组态王与单片机多机串口通讯的设计原理。分析组态王提供的直接与单片机串口通信方法的优点,给出系统基于RS-485总线传输的接口电路原理图。根据组态王提供的通讯协议和单片机多机串口通讯的原理,给出程序设计流程与思路。 Abstract:  In this paper,the design principle of communication betwe ...

    /dl/29186.html

    标签: 工控软件 单片机 串口通讯 多机

    上传时间: 2013-12-19

    上传用户:tecman

  • H.264高清编解码器的片上系统MG3500

    MG3500SoC是支持H.264高清编解码器的片上系统,内部集成一个嵌入式ARM926处理器,支持高清H.264编解码、MPEG鄄2解码和JPEG编解码。介绍了MG3500SoC的主要性能特点、引脚排列、主要接口功能及在DVR上的应用,以及MG3500SoC及其周围器件的硬件设计,提出了在设计中应注意的问题。 Abstract:  The MG3500System-on-Chi ...

    /dl/29192.html

    标签: 3500 264 MG 编解码器

    上传时间: 2013-11-12

    上传用户:elinuxzj