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宏泰介绍频敏变阻器影响因素

发布时间:2016-06-05 15:19

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频敏变阻器的高频特性:频敏变阻器使用在高频条件下,要考虑其固定有电感和固有电容的影响。这时,频敏变阻器变为一个直流电阻(R0)与分布电感串联,然后再与分布电容并联的等效电路,非线绕频敏变阻器的LR=0.01-0.05微亨,CR=0.1-5皮法,线绕频敏变阻器的LR达几十微亨,CR达几十皮法,即使是无感绕法的线绕频敏变阻器,LR仍有零点几微亨。