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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小型继电器主要参数

2013/12/31 14:13:38点击:
小型继电器主要参数
1、小型继电器线圈直流电阻,指用万用表测出的线圈的电阻值。
2、小型继电器额定工作电压或额定工作电流,这是指继电器正常工作时,线圈的电压或电流值。有时,手册中只给出额定工作电压或额定工作电流,这时就可以用欧姆定律算出没给出的额定电流或额定电压值:即/=U/R,U=IxR,R为继电器线圈的直流电阻。
3、小型继电器吸合电压或电流,它是指继电器产生吸合时的最小电压或电流。如果只给继电器的线圈上加上吸合电压,这时的吸合是不牢靠的。一般吸合电压为额定工作电压的75%左右。
4、小型继电器释放电压或电流,是指继电器两端的电压减小到一定数值时,继电器从吸合状态转到释放状态时的电压值。释放电压要比吸合电压小得多,一般释放电压是吸合电压的1/4左石。
5、小型继电器触点负载,是指继电器的触点在切换时能承受的电压和电流值。