1.在高增益放大電路中.應(yīng)選用噪聲電動勢小的電阻器，如金屬膜也阻器、碳膜電阻器和線繞電阻器。

   2.針對電路的工作頻率選用不同類堪的電阻器。線繞電阻器的分布參數(shù)較大，即使采用無感繞制的線繞電阻器，其分布參數(shù)也比非線繞電阻器大得多，因而線繞電阻不適合在高頻電路中工作。在低于50kHz 的電路中，由于電阻器的分布參數(shù)對電路工作影響不大，可選用線繞電阻器。

3.在高頻電路中的電阻器，要求其分布參數(shù)越小越好。所以，在高達(dá)數(shù)百兆赫的高頻電路中應(yīng)選用碳膜電阻器、金屬膜電阻器和金屬氧化膜電阻器。在超高頻電路中，應(yīng)選用超高頻碳膜電阻器。

五、電阻器的型號

RQ52-180L-6/3H17KW電阻器RQ52-200L-6/4H26KW電阻器RQ52-225M-6/5H34KW電阻器RQ52-250M1-6/5H42KW電阻器RQ52-250M2-6/6H52KW電阻器RQ52-280S-6/7H63KW電阻器RQ52-280M-6/9H85KW電阻器RQ52-160L-8/2H9KW電阻器RQ52-180L-8/3H13KW電阻器RQ52-200L-8/3H18.5KW電阻器RQ52-225M-8/3H26KW電阻器RQ52-250M1-8/5H35KW電阻器RQ52-250M2-8/5H42KW電阻器RQ52-280S-8/5H52KW電阻器RQ52-280M-8/7H63KW電阻器RQ52-315S-8/9H85KW電阻器RQ52-315M-8/11H100KW電阻器RQ52-280S-10/6H42KW電阻器RQ52-280M-10/6H55KW電阻器 電阻器RQ52-315M-10/10H85KW電阻器RQ52-355M-10/12H110KW電阻器RQ52-355L1-10/13H132KW電阻器RQ52-355L2-10/18H150KW電阻器RQ52-400L1-10/20H190KW電阻器RQ52-400L2-10/24H240KW電阻器RQ54-180L-6/4H15KW電阻器RQ54-200L-6/4H22KW電阻器RQ54-225M-6/5H30KW電阻器RQ54-250M1-6/5H37KW電阻器RQ54-250M2-6/7H45KW電阻器RQ54-280S-6/9H55KW電阻器RQ54-280M-6/10H75KW電阻器RQ54-160L-8/3H7.5KW電阻器RQ54-180L-8/3H11KW電阻器RQ54-200L-8/3H15KW電阻器RQ54-225M-8/5H22KW電阻器RQ54-250M1-8/5H30KW電阻器RQ54-250M2-8/6H37KW電阻器R

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