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贴片电解电容交流电和储存电荷的特点
Edit:管理员 Browse: Times Date:2016-05-21
贴片电解电容交流电和储存电荷的特点
在前面的产品文章中我们有说道过
贴片电解电容
的特点应用,以及贴片电解电容的极性选择的介绍了,一般的我们需要知道大概的信息就好了,但是对于电子产品的开发的则需要了解的更多,才能更好的运用贴片
电解电容
。那么我们现在就来说说贴片电解电容它的交流电和储存电荷的特点。
在电子线路中,贴片电解电容用来通过交流而阻隔直流,也用来存储和释放电荷以充当滤波器,平滑输出脉动信号,不同的电容器储存电荷的能力也不相同,规定把
电解电容
器外加1伏特直流电压时所储存的电荷量称为该
电容
器的电容量。
贴片电解电容
有个铝壳,里面充满了电解质,并引出两个电极,作为正(+)、负(-)极,与其它
电容
器不同,它们在电路中的极性不能接错,而其他
电容
则没有极性,把贴片电解电容器的两个电极分别接在电源的正负极上,过一会儿即使把电源断开,两个引脚间仍然会有残留电压,所以我们说贴片电解电容储存了电荷。
电路中,
贴片电解电容
场被用作耦合,旁路,滤波等,都是利用它“通交流,隔直流”的特性。那么交流电为什么 能够通过贴片电解电容呢?我们先来看看交流电的特点,交流电不仅方向往复交变,它的大小也在按规律变化。贴片电解电容接在交流电源上,贴片电解电容连续的充电,放电,电路中就会流过与交流电变化规律一致(相位不同)的充电电流和放电电流。
东莞市祥如电子有限公司
官方网站:
www.xiangrudz.com
如需转载此文请注明文章出处链接:
www.xiangrudz.com
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