Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following Londonfl jerseys supplyn Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of swomen nfl jerseystaying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yecheap nfl jerseys wholesales," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won http://govoriotkrito.bg/libs/nflcn08.htmthe globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.cheap nfl jerseys
新闻动态 News
搜索 Search
你的位置:首页 > 新闻动态 > 行业新闻

浙江通信继电器的发展趋势

2013/11/22 10:03:18点击:
按输入信号不同确定浙江通信继电器的种类

  按输入信号是电、温度、时间、光信号确定选用电磁、温度、时间、光电继电器,这是没有问题的。这里特别说明电压、 电流继电器的选用。 若整机供给继电器线圈是恒定的电流应选用电流继电器,是恒定电压值则选用电压继电器。

  浙江通信继电器的发展趋势:

  1、小型化

  随着通信设备的快速发展,安装板空间不断缩小,在不损害性能的前提下,小型化成为每个厂商面临的必然趋势。通讯继电器从第一代到第四代尺寸已从20.0×10.0×10.0mm降至10.0×6.5×5.0mm,体积缩小了6倍多。

  2、可靠性

  针对第四代通讯继电器制定的国际标准-IEC61811-55对浪涌耐压、绝缘耐压及防护浪涌的绝缘间距以及输入与输出之间的隔离均提出了更加苛刻的要求;良好的继电参数一致性、高可靠性使整机运行无误。

  3、低功耗

  从第二代到第四代,通讯继电器功耗由200mW降至100mW,减小了50%;并且具有节能和记忆功能,有效地减少了整机电源的投入。

  4、产品结构

  第三、四代通讯继电器结构形式与第一、二代截然不同,采用含高能永磁体的双线圈对称平衡翘板式磁路结构,触点点焊在带料上后整体注塑,精度要求更高、极灵敏、用料要求也较高。

  5、磁系统效率

  永磁体材料将快速发展,通过搀加成分来改善磁材料性能。硬磁和软磁将组合应用以产生高持久性和高矫顽力的材料;有些高端深圳通信继电器的设计为降低继电器的体积已经不用永磁体,出现了扁平线圈系统,还有的采用静电驱动方式。