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贴片电感的功能以及贴片电感在电路中的特点
Edit:管理员 Browse: Times Date:2016-04-25
贴片电感的功能以及贴片电感在电路中的特点
贴片电感
在实际电路中,即使是一个简单的线圈,不仅有电感,有还有
电阻
,不能分割,但可以用集中的电感L与电阻R串联电路模型来表示。作为具有代表性的典型模型,经常研究电阻、电感、
电容
串联电路。在RLC串联电路中,当电路端电压和电流同相时,电路呈电阻性。在RLC串联电路中,当电路端电压和电流同相时,电路呈电阻性,电路的这种状态叫串联谐振。谐振是正弦交流电路在特定条件下产生的一种特殊物理现象。谐振现象在无线电和电工技术中得到广泛应用,研究电路中的谐振现象有重要的实际意义。交流电路的谐振有很多用途,一般可用于测量电感、电容、频率,还可用于选频、陷波、调谐放大、作振荡器和频率补偿等。
贴片电感
在电路的Q值一般在50-200之间。因此,即使外加电源电压不高,在谐振时,电路元件上的电压仍然可能很高,特别对于电力电路来说,这就必须注意到元件的耐压问题和设法避免过电压问题。稳态时,电源不向电路输送无功功率。电感中的无功功率与电容中的无功功率大小相等,互相补偿,彼此进行能量交换。RLC串联电路谐振时的能量关系。
贴片电感
在RLC串联电路中,
电阻
是耗能元件,它把电、磁能转换成热;
电容
和电感是储能元件,它们时而储存电、磁能,时而放出’彼此交换能量,而不消耗、脉冲强磁体电阻电感实时自动测量。
东莞市祥如电子有限公司官方网站:
www.xiangrudz.com
如需装载此文请注明文章出处链接:
www.xiangrudz.com
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