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light-Emitting

  • a semaphore (light changer - red, yellow and green) application using VHDL platform

    a semaphore (light changer - red, yellow and green) application using VHDL platform

    标签: application semaphore platform changer

    上传时间: 2014-01-18

    上传用户:zycidjl

  • Light dimmer application firmware code.

    Light dimmer application firmware code.

    标签: application firmware dimmer Light

    上传时间: 2017-08-04

    上传用户:kbnswdifs

  • 凌力尔特芯片电路总汇

    Over the past several years Linear Technology, the magazine, has come of age. From nothing, the publication has come into its own, as has its subscriber list. Many innovative circuits have seen the light of day in the pages of our now hallowed publication.

    标签: 凌力尔特 芯片电路

    上传时间: 2014-12-23

    上传用户:crazyer

  • 确保电解电容器的寿命长-LED灯泡为例

    Abstract: Electrolytic capacitors are notorious for short lifetimes in high-temperature applications such asLED light bulbs. The careful selection of these devices with proper interpretation of their specifications isessential to ensure that they do not compromise the life of the end product. This application notediscusses this problem with electrolytic capacitors in LED light bulbs and provides an analysis that showshow it is possible to use electrolytics in such products.  

    标签: LED 电解电容器 寿命

    上传时间: 2013-11-17

    上传用户:asdfasdfd

  • DN445微型模块LED驱动器

      Once relegated to the hinterlands of low cost indicatorlights, the LED is again in the spotlight of the lightingworld. LED lighting is now ubiquitous, from car headlightsto USB-powered lava lamps. Car headlights exemplifyapplications that capitalize on the LED’s clear advantages—unwavering high quality light output, tough-assteelrobustness, inherent high effi ciency—while a USBlava lamp exemplifi es applications where only LEDs work.Despite these clear advantages, their requirement forregulated voltage and current make LED driver circuitsmore complex than the venerable light bulb, but some newdevices are closing the gap. For instance, the LTM®8040μModule™ LED driver integrates all the driver circuitryinto a single package, allowing designers to refocus theirtime and effort on the details of lighting design criticalto a product’s success.

    标签: 445 LED DN 微型模块

    上传时间: 2013-10-16

    上传用户:togetsomething

  • 笔记本电脑的功率调节系统

      Notebook and palmtop systems need a multiplicity ofregulated voltages developed from a single battery. Smallsize, light weight, and high efficiency are mandatory forcompetitive solutions in this area. Small increases inefficiency extend battery life, making the final productmuch more usable with no increase in weight. Additionally,high efficiency minimizes the heat sinks needed onthe power regulating components, further reducing systemweight and size.

    标签: 笔记本电脑 功率调节

    上传时间: 2013-11-11

    上传用户:大三三

  • 基于ATmega8的双轴太阳跟踪器设计

    为提高太阳能的利用率,以ATmega8单片机为控制核心,设计了一套光电跟踪与视日运动轨迹跟踪互补控制的双轴太阳跟踪器。该跟踪器在晴天时,利用光敏电阻采集光强判断太阳位置,控制步进电机实现光电跟踪;在阴天时,采集时钟器件PCF8583的时间信息,计算当前太阳位置来实现视日运动轨迹跟踪。实验表明:该太阳跟踪器能在不同天气状况下对太阳进行较准确地跟踪,能量接收效率提高了30%,达到充分利用太阳能的目的。 Abstract:  To improve the utilization rate of solar energy,a kind of solar tracking controller which effectively combined the sun angle tracking and photo electric tracking based on ATmega8is designed.In the sunny days,the solar tracking con-troller determines the sun's position by using photosensitive resistances to collect light intensity and control stepper motors to achieve photo electric tracking,n cloudy days,it collects clock chip PCF8583time information to calculate the current position of the sun and achieve the sun angle tracking.Experimental results show the solar tracking controller accurately tracks the sun in different weather conditions,improves received energy efficiency by30%and reaches the purpose of full use of solar energy.

    标签: ATmega8 跟踪器

    上传时间: 2013-10-15

    上传用户:urgdil

  • 基于CAN总线的综自通讯规约设计

    介绍一种基于CAN总线的牵引变电站自动化系统通讯规约的设计,CAN通讯规约采用标准帧,报文采用主动发送和发送查询两种处理形式。该设计在城市轻轨与地铁牵引变电站中的应用表明:可实现间隔层和通讯处理层的数据快速、可靠的交换,提高牵引变电站的安全性和稳定性 。 Abstract:  This paper firstly presents a kind of design dealing with communicational protocol to the traction substation automation system based on CAN bus,and then comes up with the ideas that all frames of CAN communicational protocol should adopt the standard frame,and that messages be processed by two ways:sending initiatively and sending quiries.Subway and light rail application shows that the use of the CAN bus is possible to exchange data quickly and reliably between the layers of the middle and the communicational processing,hence to improve the safety and stability of traction substations.

    标签: CAN 总线 通讯规约

    上传时间: 2013-11-07

    上传用户:bs2005

  • FREERTOS的官方移植文档

    FeaturesThe following standard features are provided.• Choice of RTOS scheduling policy1. Pre-emptive:Always runs the highest available task. Tasks of identical priorityshare CPU time (fully pre-emptive with round robin time slicing).2. Cooperative:Context switches only occur if a task blocks, or explicitly callstaskYIELD().• Co-routines (light weight tasks that utilise very little RAM).• Message queues• Semaphores [via macros]• Trace visualisation ability (requires more RAM)• Majority of source code common to all supported development tools• Wide range of ports and examples

    标签: FREERTOS 移植 文档

    上传时间: 2013-10-13

    上传用户:13162218709

  • 飞思卡尔S12处理器培训讲义

    飞思卡尔S12处理器培训讲义   In this LAB, we will: Get familiar with CodeWarrior 4.7 IDE; How to work with project wizard; Light the LEDs

    标签: S12 飞思卡尔 处理器 培训讲义

    上传时间: 2013-11-13

    上传用户:LIKE