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  • 如何保护集成FET的电源开关

    Abstract: Some types of loads require more current during startup than when running. Other loads can be limited to a lower-powercurrent during startup but require a higher operating current. This article describes an application circuit that automatically adjusts apower circuit’s overcurrent ...

    /dl/24193.html

    标签: FET 保护 集成 电源开关

    上传时间: 2013-10-23

    上传用户:swaylong

  • 100-15V TO 12V DCDC 原理图 PCB BOM表

    高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture t ...

    /dl/24277.html

    标签: DCDC 100 12V BOM

    上传时间: 2013-10-24

    上传用户:wd450412225

  • 快速,高效,独立型NiMH,NiCd电池充电

      Although recent popular attention is focused on LithiumIon batteries, one must not forget that other batterychemistries, such as Nickel Cadmium (NiCd) and NickelMetal Hydride (NiMH) have advantages in rechargeablepower systems. Nickel-based batteries are robust, capableof high discharge r ...

    /dl/24299.html

    标签: NiMH NiCd 独立 电池充电

    上传时间: 2013-11-04

    上传用户:qq10538412

  • DN1011 简单高效率隔离型反激式电源

      While simplicity and high effi ciency (for cool running) areno longer optional features in isolated power supplies, itis traditionally diffi cult to achieve both. Achieving higheffi ciency often requires the use of advanced topologiesand home-brewed secondary synchronous rectifi cationsch ...

    /dl/24301.html

    标签: 1011 DN 高效率 隔离型

    上传时间: 2013-10-16

    上传用户:wayne595

  • 高功率PoE PD接口与集成反激式控制器

      To this day, Power over Ethernet (PoE) continues to gainpopularity in today’s networking world. The 12.95Wdelivered to the Powered Device (PD) input supplied bythe Power Sourcing Equipment (PSE) is a universal supply.Each PD provides its own DC/DC conversion from anominal 48V supply ...

    /dl/24317.html

    标签: PoE 高功率 PD接口 集成

    上传时间: 2014-12-24

    上传用户:jasson5678

  • 基于MAX7219的LED数码显示驱动电路设计

      现有基于MAX7219芯片的数码管驱动电路只适用于小尺寸LED,为扩展其使用范围,在介绍动态显示芯片MAX7219功能的基础上,提出了一个基于该芯片的8位高亮度8英寸数码管驱动电路。电路保留了MAX7219芯片的功能强大、编程简单等优点,通过74LS273锁存器和ULN2803达林顿驱动器,实现了对任意大尺寸数码管提供较高电压和电流 ...

    /dl/29097.html

    标签: 7219 MAX LED 数码显示

    上传时间: 2013-10-23

    上传用户:31633073

  • 基于ARM单片机的自动测高测距小车

    生活中许多目标的高度和水平距离需要进行测量。目前主要的测量方法,仍以传统的皮尺丈量为主,测量效率不高,有时还很不方便,没有技术成熟的数字式测高测距产品。以基本的数学方法为理论依据,利用遥控小车做为载体,采用角度传感器测量角度、霍尔传感器测量水平距离等,通过单片机LM3S615进行数据计算,实现了对待测目标 ...

    /dl/29167.html

    标签: ARM 单片机 自动

    上传时间: 2013-10-30

    上传用户:jackandlee

  • 串行时钟PCF8583在微机保护装置中的应用

    实时时钟是微机保护装置的重要部件,在讨论PCF8583结构与功能的基础上,提出采用dsPIC33F系列微处理器与串行I2C时钟PCF8583的接口设计方案,给出了相应的接口电路与软件流程。该设计方案结构简单,可靠性高,开发周期短,具有一定的实用与参考价值。所设计的微机保护装置已投入现场运行,效果良好。 Abstract:  Rea ...

    /dl/29188.html

    标签: 8583 PCF 串行时钟 中的应用

    上传时间: 2013-11-18

    上传用户:Thuan

  • PCA9534—带中断的低功耗8位I2C和SMBus IO口

    The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, l ...

    /dl/30569.html

    标签: SMBus 9534 PCA I2C

    上传时间: 2013-11-17

    上传用户:vodssv

  • LPC1769 LPC1768 LPC1767 LPC176

    The LPC1769/68/67/66/65/64 are ARM Cortex-M3 based microcontrollers for embedded applications featuring a high level of integration and low power consumption. The ARM Cortex-M3 is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support blo ...

    /dl/30647.html

    标签: LPC 1769 1768 1767

    上传时间: 2014-02-20

    上传用户:13215175592