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
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中间继电器动作原理

2014/1/8 20:21:25点击:

中间继电器动作原理

中间继电器当继电器线圈施加激励量等于或大于其动作值时,中间继电器衔铁被吸向导磁体,同时衔铁压动触点弹片,中间继电器使触点接通、断开或切换被控中间继电器制的电路。当继电器的线圈被断电或激励量降低到小于其返回值时,衔铁和接触片返回到中间继电器原来位置。

中间继电器结构与工作原理

继电器采用JK-4壳体。,其外形尺寸、中间继电器背后端子及安装开孔图见附录2。背后端子接线图见图1。继电器是在DM1电码继电器的基础上,增加底座和外壳而成。当在继电器线圈上加电压,中间继电器且等于或大于动作电压时,中间继电器衔铁就被电磁吸力吸靠在铁心上,而接触片在衔铁顶板的推动下,触点接通、断开或转换被控制电路,当继电器线圈被断电或电压降低到小于返回电压时,中间继电器衔铁在接触片的作用下返回到原来位置