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  • 相敏检波电路鉴相特性的仿真研究

    分析了调幅信号和载波信号之间的相位差与调制信号的极性的对应关系,得出了相敏检波电路输出电压的极性与调制信号的极性有对应关系的结论。为了验证相敏检波电路的这一特性,给出3 个电路方案,分别选用理想元件和实际元件,采用Multisim 对其进行仿真实验,直观形象地演示了相敏检波电路的鉴相特性,是传统的实际操作实验所不可 ...

    /dl/21390.html

    标签: 相敏检波 电路 仿真研究 鉴相

    上传时间: 2013-11-23

    上传用户:guanhuihong

  • 电感开关稳压器提高输入电压

    Abstract: Uses the MAX641 switching controller and an external discrete charge pump to step up the input voltage. This circuitcan service low loads and is efficient when the output is two, three, four times the input voltage. Adding the MAX627 MOSdriver can further increase the output current capa ...

    /dl/24146.html

    标签: 电感 开关稳压器 输入电压

    上传时间: 2013-11-15

    上传用户:zwei41

  • 无需检测电阻的小型DFN封装电路断路器

      Traditionally, an Electronic Circuit Breaker (ECB) comprisesa MOSFET, a MOSFET controller and a current senseresistor. The LTC®4213 does away with the sense resistorby using the RDS(ON) of the external MOSFET. The resultis a simple, small solution that offers a signifi cant lowinserti ...

    /dl/24312.html

    标签: DFN 检测电阻 封装 电路断路器

    上传时间: 2014-03-02

    上传用户:lixinxiang

  • 运用LT3092电流源以高线性度来实现温度至电流转换

      One of the fi rst lessons in a basic electronics coursecovers the symbols for resistors, capacitors, inductors,voltage sources and current sources. Althougheach symbol represents a functional component of areal-world circuit, only some of the symbols have directphysical counterparts. For ...

    /dl/24350.html

    标签: 3092 LT 电流源 温度

    上传时间: 2013-11-24

    上传用户:simonpeng

  • 单片机控制的铅酸蓄电池充电电源

     为了有效地提升铅酸蓄电池的使用寿命,同时实现对充电过程的监控,设计出一种用单片机控制的36 V铅酸蓄电池充电电源。本电路采用反激式拓扑,连续电流工作模式,电源管理IC设计在电源的副边,由ELAN公司的EM78P258N单片机模拟,是用可编程器件模拟电源管理IC,实现智能电源低成本化的一次成功尝试,通过对单片机的软 ...

    /dl/29124.html

    标签: 单片机控制 充电电源 铅酸蓄电池

    上传时间: 2013-11-16

    上传用户:cepsypeng

  • 基于凌阳单片机的步进电机加减速的控制方法

    提出一种基于凌阳单片机的步进电机加减速的控制方法。采用凌阳科技推出的16位结构工控单片机SPMC75F2413A为控制器,由Allegro公司生产的两相步进电机专用驱动器件SLA7042M构成步进电机的驱动电路,在传统的3段直线加减速控制算法基础上增加至7段S形曲线加减速过程,控制步进电机的启动和停止。实验结果表明,该控制方法克服 ...

    /dl/29171.html

    标签: 凌阳单片机 步进电机 控制方法

    上传时间: 2013-12-08

    上传用户:jiangfire

  • 基于C8051F060的数据采集存储系统的设计

    介绍一种基于C8051F060单片机和NAND Flash的数据采集存储系统,该系统可实现3路信号采样,每路采样率为5KS/s,通过异步串行通信接口实现数据传输。并详细说明系统的软件设计。 Abstract:  An acquisition and storage system based on C8051F060and NAND Flash is designed in this paper.The system is used to sam ...

    /dl/29207.html

    标签: C8051F060 数据采集 存储系统

    上传时间: 2013-10-12

    上传用户:Jesse_嘉伟

  • SN65LBC170,SN75LBC170,pdf(TRIP

    The SN65LBC170 and SN75LBC170 aremonolithic integrated circuits designed forbidirectional data communication on multipointbus-transmission lines. Potential applicationsinclude serial or parallel data transmission, cabledperipheral buses with twin axial, ribbon, ortwisted-pair cabling. These devices ...

    /dl/29512.html

    标签: 170 LBC SN TRIP

    上传时间: 2013-10-13

    上传用户:ytulpx

  • 1A SIMPLE STEP-DOWN SWITCHING

    The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due totheir high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink isrequired. Optimized for use with standard series of inductors available from s ...

    /dl/31041.html

    标签: STEP-DOWN SWITCHING SIMPLE 1A

    上传时间: 2013-11-20

    上传用户:jelenecheung

  • 3-V TO 5.5-V MULTICHANNEL RS-2

    The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with±15-kV ESD (HBM and IEC61000-4-2, Air-Gap Discharge) and ±8-kV ESD (IEC61000-4-2, Contact Discharge)protection on serial-port connection pins. The device meets the requirements of TIA/EIA-23 ...

    /dl/31075.html

    标签: MULTICHANNEL 5.5 TO RS

    上传时间: 2013-10-19

    上传用户:ddddddd