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频敏变阻器相关信息了解

发布时间:2015-09-22 09:46

7m体育PINMINBIANZUQI-TASHIYUANERCIHUILUXITONGDEDUOCHUDIANYUANJIANZUCHENGYIGEWUCHUDIANDIANCIYUANJIAN,XIANGDANGYUYIGEDENGZHIZUKANGCHUANRURAOXIANZHUANZIDEHUILUZHONG,ZUOWEIQIDONGSHIKEBIANZUDEQIDONGSHEBEI,TAYUCHUANTONGDEPINMINBIANZUQIDONGQI   DADEQUBIEJIUSHI:ZAIBANGZHUDIANDONGJIWANCHENGBIANZUQIDONGRENWUZHIHOURENGCANYUDIANDONGJITUODONGQUANGUOCHENG,ERCHUANTONGDEPINMINBIANZUQISHIBUNENGCANYUDIANDONGJITUODONGYUNXINGDE,YIQIANDADUOCAIYONGPINMINBIANZUQIQIDONG,DANQIGUZHANGLVTAIGAO。MUQIANJIAOWEICHENGSHUDEFANGSHISHICAIYONGYETIBIANZUQIDONGQI。TASHILIYONGLIANGJIWENDEYETIDIANZU,TONGGUOJIXIECHUANDONGZHUANGZHISHIJIBANDEJULIZHUBUJIEJIN,ZHIZHIJIECHU,DADAOCHUANRENZHUANZIHUILUZHONGDEDIANZUWUJIBIANXIAO   HOUWEILING,SHIXIANDIANDONGJIWUCHONGJIDEPINGHUAQIDONG。

PINMINBIANZUQIDEWENDINGXING:WENDINGXINGSHIHENGLIANGPINMINBIANZUQIZAIWAIJIETIAOJIAN(WENDU、SHIDU、DIANYA、SHIJIAN、FUHEXINGZHIDENG)ZUOYONGXIADIANZUBIANHUADECHENGDU

(1)WENDUXISHUa,BIAOSHIWENDUMEIBIANHUA1DUSHI,PINMINBIANZUQIZUZHIDEXIANGDUIBIANHUALIANG。

JI:SHIZHONG:R1、R2FENBIEWEIWENDUt1HEt2SHIDEDIANZUZHI

7m体育(2)DIANYAXISHUavBIAOSHIDIANYAMEIBIANHUA1FUSHI,PINMINBIANZUQIZUZHIDEXIANGDUIBIANHUALIANG,JI:SHIZHONG:R1、R2FENBIESHIDIANYAWEIU1HEU2SHIDEDIANZUZHI

7m体育ZAIDIANLUPINMINBIANZUQIHEDIANWEIQIDEDANWEIBIAOZHUGUIZE

ZUZHIZAIZHAOOUYISHANG,BIAOZHUDANWEIM。BIRU1ZHAOOU,BIAOZHU1M;2.7ZHAOOU,BIAOZHU2.7M。

ZUZHIZAI1QIANOUDAO100QIANOUZHIJIAN,BIAOZHUDANWEIk。BIRU5.1QIANOU,BIAOZHU5.1k;68QIANOU,BIAOZHU68k。

阻值在100千欧到1兆欧之间,可以标注单位k,也可以标注单位M。比如360千欧,可以标注360k,也可以标注0.36M。
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。