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电阻简介以及电阻烧坏的原因

选伊萨,找光伟达

电阻种类及特点简介

  电阻,英文名resistance,通常缩写为R,它是导体的一种基本性质,与导体的尺寸、材料、温度有关。欧姆定律说,I=U/R,那么R=U/I,电阻的基本单位是欧姆,用希腊字母“Ω”表示,有这样的定义:导体上加上一伏特电压时,产生一安培电流所对应的阻值。电阻的主要职能就是阻碍电流流过。事实上,“电阻”说的是一种性质,而通常在电子产品中所指的电阻,是指电阻器这样一种元件。师傅对徒弟说:“找一个100欧的电阻来!”,指的就是一个“电阻值”为100欧姆的电阻器,欧姆常简称为欧。表示电阻阻值的常用单位还有千欧(kΩ),兆欧(MΩ)。

  YI、DIANZUQIDEZHONGLEI

  DIANZUQIDEZHONGLEIYOUHENDUO,TONGCHANGFENWEISANDALEI:GUDINGDIANZU,KEBIANDIANZU,TEZHONGDIANZU。ZAIDIANZICHANPINZHONG,YIGUDINGDIANZUYINGYONGZUIDUO。ERGUDINGDIANZUYIQIZHIZAOCAILIAOYOUKEFENWEIHAODUOLEI,DANCHANGYONG、CHANGJIANDEYOURTXINGTANMODIANZU、RJXINGJINSHUMODIANZU、RXXINGXIANRAODIANZU,HAIYOUJINNIANLAIKAISHIGUANGFANYINGYONGDEPIANZHUANGDIANZU。XINGHAOMINGMINGHENYOUGUILV,RDAIBIAODIANZU,T-TANMO,J-JINSHU,X-XIANRAO,SHIPINYINDEDIYIGEZIMU。ZAIGUOCHANLAOSHIDEDIANZICHANPINZHONG,CHANGKEYIKANDAOWAIBIAOTUFULVQIDEDIANZU,NEIJIUSHIRTXINGDE。ERHONGYANSEDEDIANZU,SHIRJXINGDE。YIBANLAOSHIDIANZICHANPINZHONG,YILVSEDEDIANZUJUDUO。WEISHENMENI?ZHEISHEJIDAOCHANPINCHENGBENDEWENTI,YINWEIJINSHUMODIANZUSUIRANJINGDUGAO、WENDUTEXINGHAO,DANZHIZAOCHENGBENYEGAO,ERTANMODIANZUTEBIEJIALIAN,ERQIENENGMANZUMINYONGCHANPINYAOQIU。

  DIANZUQIDANGRANYEYOUGONGLVZHIFEN。CHANGJIANDESHI1/8WADE“SEHUANTANMODIANZU”,TASHIDIANZICHANPINHEDIANZIZHIZUOZHONGYONGDEZUIDUODE。DANGRANZAIYIXIEWEIXINGCHANPINZHONG,HUIYONGDAO1/16WADEDIANZU,TADEGETOUXIAODUOLE。ZAIZHEJIUSHIWEIXINGPIANZHUANGDIANZU,TASHITIEPIANYUANJIANJIAZUDEYIYUAN,YIQIANDUOJIANYUJINKOUWEIXINGCHANPINZHONG,XIANZAIDIANZIAIHAOZHEYEKEYIMAIDAOLE(ZUOWUXIANQIETINGQI?)

  ER、DIANZUQIDEBIAOSHI

  ZHEIXIEZHIJIEBIAOZHUDEDIANZU,ZAIXINMAILAIDESHIHOU,HENRONGYISHIBIEGUIGE。KESHIZAIZHUANGPEIDIANZICHANPINDESHIHOU,BIXUKAOLVDAOWEIYIHOUJIANXIUDEFANGBIAN,BABIAOZHUMIANCHAOXIANGYIYUKANDAODEDIFANG。SUOYIZAIWANJIAODESHIHOU,YAOTEBIEZHUYI。ZAISHOUGONGZHUANGPEISHI,DUOZHEIYIDAOGONGXU,BUSHISHENMEDAWENTI,DANSHIZIDONGSHENGCHANXIANSHANGDEJIQIMEIYOUNEIMECONGMING。ERQIE,DIANZUQIYUANJIANYUEZUOYUEXIAO,ZHIJIEBIAOZHUDEBIAOJINANYIKANQING。YINCI,GUOJISHANGGUANYONG“SEHUANBIAOZHUFA”。SHISHISHANG,“SEHUANDIANZU”ZHANJUZHEDIANZUQIYUANJIANDEZHULIUDIWEI。“SEHUANDIANZU”GUMINGSIYI,JIUSHIZAIDIANZUQISHANGYONGBUTONGYANSEDEHUANLAIBIAOSHIDIANZUDEGUIGE。YOUDESHIYONG4GESEHUANBIAOSHI,YOUDEYONG5GE。YOUQUBIEME?SHIDE。4HUANDIANZU,YIBANSHITANMODIANZU,YONG3GESEHUANLAIBIAOSHIZUZHI,YONG 1GESEHUANBIAOSHIWUCHA。5HUANDIANZUYIBANSHIJINSHUMODIANZU,WEIGENGHAODIBIAOSHIJINGDU,YONG4GESEHUANBIAOSHIZUZHI,LINGYIGESEHUANYESHIBIAOSHIWUCHA。XIABIAOSHISEHUANDIANZUDEYANSE-SHUMADUIZHAOBIAO:

河南快3  YAN SE YOUXIAOSHUZI CHENG SHU YUNXUPIANCHA

河南快3  HEI SE 010DE0CIFANG

  ZONG SE 1 10DE1CIFANG +/- 1%

  HONG SE 2 10DE2CIFANG +/- 2%

  CHENG SE 3 10DE3CIFANG -----

河南快3  HUANG SE 4 10DE4CIFANG -----

河南快3  LV SE5 10DE5CIFANG +/- 0.5%

  LAN SE 610DE6CIFANG +/- 0.2%

  ZI SE 7 10DE7CIFANG+/- 0.1%

  HUI SE 8 10DE8CIFANG -----

  BAI SE 9 10DE9CIFANG +5~-20%

河南快3  WU SE ---- ----- +/- 20%

  YIN SE ----- ----- +/- 10%

  JIN SE ----- ----- +/- 5%

  SEHUANDIANZUDEGUIZESHIZUIHOUYIQUANDAIBIAOWUCHA,DUIYUSIHUANDIANZU,QIANERHUANDAIBIAOYOUXIAOZHI,DISANHUANDAIBIAOCHENGSHANGDECIFANGSHU。BUYAOPA,JIZHUYANSEHESHUMAJIUXINGLA,QITADEBUYONGJI。YOUYIGEMIJUE:MIANDUIYIGESEHUANDIANZU,ZHAOCHUJINSEHUOYINSEDEYIDUAN,BINGJIANGTACHAOXIA,CONGTOUKAISHIDUSEHUAN。LIRUDIYIHUANSHIZONGSEDE,DIERHUANSHIHEISEDE,DISANHUANSHIHONGSEDE,DISIHUANSHIJINSEDE,NEIMETADEDIANZUZHISHI1、0,DISANHUANSHITIANLINGDEGESHU,ZHEIGEDIANZUTIAN2GELING,SUOYITADESHIJIZUZHISHI1000Ω,JI1kΩ。

  SAN、KEBIANDIANZU

  可变电阻又称为电位器,电子设备上的音量电位器就是个可变电阻。但是一般认为电位器都是可以被手动调节的,而可变电阻一般都较小,装在电路板上不经常调节。可变电阻有三个引脚,其中两个引脚之间的电阻值固定,并将该电阻值称为这个可变电阻的阻值。第三个引脚与任两个引脚间的电阻值可以随着轴臂的旋转而改变。这样,可以调节电路中的电压或电流,达到调节的效果。

  SI、TEZHONGDIANZU

  GUANGMINDIANZU SHIYIZHONGDIANZUZHISUIWAIJIEGUANGZHAOQIANGRUO(MINGAN)BIANHUAERBIANHUADEYUANJIAN,GUANGYUEQIANGZUZHIYUEXIAO,GUANGYUERUOZUZHIYUEDA。RUGUOBAGUANGMINDIANZUDELIANGGEYINJIAOJIEZAIWANYONGBIAODEBIAOBISHANG,YONGWANYONGBIAODE R×1kDANGCELIANGZAIBUTONGDEGUANGZHAOXIAGUANGMINDIANZUDEZUZHI:JIANGGUANGMINDIANZUCONGJIAOANDECHOUTILIYIDAOYANGGUANGXIAHUODENGGUANGSHANG,WANYONGBIAODUSHUJIANGHUIFASHENGBIANHUA。ZAIWANQUANHEIANCHU,GUANGMINDIANZUDEZUZHIKEDAJIZHAOOUYISHANG(WANYONGBIAOZHISHIDIANZUWEIWUQIONGDA,JIZHIZHENBUDONG),ERZAIJIAOQIANGGUANGXIANXIA,ZUZHIKEJIANGDAOJIQIANOUSHENZHI1QIANOUYIXIA。

  LIYONGZHEIYITEXING,KEYIZHIZUOGEZHONGGUANGKONGDEXIAODIANLULAI。SHISHISHANGJIEBIANDELUDENGDADUOSHIYONGGUANGKONGKAIGUANZIDONGKONGZHIDE,QIZHONGYIGEZHONGYAODEYUANQIJIANJIUSHIGUANGMINDIANZU(HUOZHESHIGUANGMINSANJIGUAN,YIZHONGGONGNENGXIANGSIDEDAIFANGDAZUOYONGDEBANDAOTIYUANJIAN)。GUANGMINDIANZUSHIZAITAOCIJIZUOSHANGCHENJIYICENGLIUHUAGE(CdS)MOHOUZHICHENGDE, SHIJISHANGYESHIYIZHONGBANDAOTIYUANJIAN。XINCUNLISHENGKONGLOUDAODENGZAIBAITIANBUHUIDIANLIANG,YESHIYINWEIGUANGMINDIANZUZAIQIZUOYONG。WOMENKEYIYONGTAZHIZUODIANZIBAOXIAOJI,QINGCHENTIANLIANGSHIWOWOJIAO。

河南快3  REMINDIANZUSHIYIGETESHUDEBANDAOTIQIJIAN,TADEDIANZUZHISUIZHEQIBIAOMIANWENDUDEGAODIDEBIANHUAERBIANHUA。TAYUANBENSHIWEILESHIDIANZISHEBEIZAIBUTONGDEHUANJINGWENDUXIAZHENGCHANGGONGZUOERSHIYONGDE,JIAOZUOWENDUBUCHANG。XINXINGDEDIANNAOZHUBANDOUYOUCPUCEWEN、CHAOWENBAOJINGGONGNENG,JIUSHILIYONGLEDEREMINDIANZU。

河南快3GENGDUODIANZUCHANPINCANSHUJIBAOJIAQINGDIANHUAZIXUN:138-0229-2180,YUANXIANSHENG

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