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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中间继电器的作用

2014/1/13 19:47:19点击:
中间继电器的作用
1、中间继电器隔离。控制系统的输出信号与负载端电气隔离;
2、中间继电器转换。比如控制系统输出信号为DC24V,但负载使用AC220V供电,对于输入,可逆;
3、中间继电器“放大”。控制器输出的信号的带负载的能力往往有限,在mA或者数A的级别,如果有需要更大电流的负载,只能通过中间继电器来转换。
4、中间继电器便于维护。即使是满足负载电流要求的输出端,但因为集成在控制器内部,中间继电器如果损坏,更换维修比较麻烦,但如果通过中间继电器,中间继电器输出端的负载只是继电器的线圈,中间继电器减轻了控制器输出级的负载,中间继电器从而降低损坏的几率。而当中间继电器触点因为频繁的使用损坏时,中间继电器很容易通过简单的插拔完成更换。