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书籍 Power Over Ethernet
December 2007, San Jose, California: It seems a long time ago.
I walked into a big networking company to head their small
Power over Ethernet (PoE) applications team. Surprisingly,
I hardly knew anything about PoE prior to that day, having been a
switching-power conversion engineer almost all my lif ...
书籍 smart grid --
In order to enhance the efficiency and reliability of the power grid, diversify energy
resources, improve power security, and reduce greenhouse gas emission, many
countries have been putting great efforts in designing and constructing their smart
grid(SG) infrastructures.Smart gridcommunicationsnetw ...
书籍 RFID+Essentials
LIKE SO MANY OTHERS , THIS BOOK WAS WRITTEN BECAUSE WE COULDN ’ T FIND ONE LIKE IT . We
needed something to hand to all of those people who have come to us asking for “a good
book to read on RFID.” When we looked for candidates we found some great books, but
most were aimed at electrical engineer ...
技术资料 一种智能红外避障自动扫地机器人的设计
研究一种智能扫地机器人。从硬件系统控制模块设计到主要技术调试进行了较详细的阐述。以STM32单片机为控制核心与电机驱动、红外线路径识别模块等相互协调应用。进行电路搭建和程序编写。实现了智能扫地机器人红外线避障和自动扫地功能,其清扫面积能达到约70%,清扫率约60%,很大程度受到自身机械机构的限制,后期将对小车的机 ...
技术资料 分立元件IGBT驱动电路的改进与测试
摘要：本文在分析1GBT的动态开关特性和过流状态下的电气特性的基础上，通过对常规的IGBT推挽驱动电路进行改进，得到了具有良好过流保护特性的IGBT驱动电路。该电路简单，可靠，易用，配合DSP等控制芯片能达到很好的驱动效果Abstract：Based on the studies on the dynamic switching and over-current characteristics of I ...