duiyuxinshoulaishuo，dianzuqiyudianweiqishibijiaorongyihunxiaodelianggegainian。zhezhuyaoshiyouyudianweiqidetexingdaozhide，dianweiqinenggouzuoweisanduanhuozheerduanyuanjianlaishiyong，erzuoweierduanshidianweiqibiankedengtongyukebiandianzuqilaijinxingzuoyong。benwenjiangzhenduizheyitongxingjinxingfenxi，bangzhuduzhelejiedianweiqiyudianzuqideguanjianqubie。

 

在(zai)網(wang)絡(luo)上(shang)購(gou)買(mai)電(dian)子(zi)器(qi)件(jian)時(shi)，很(hen)多(duo)電(dian)阻(zu)器(qi)也(ye)是(shi)能(neng)夠(gou)進(jin)行(xing)三(san)腳(jiao)調(tiao)節(jie)的(de)，其(qi)功(gong)能(neng)與(yu)電(dian)位(wei)器(qi)完(wan)全(quan)相(xiang)同(tong)
，這(zhe)就(jiu)導(dao)致(zhi)很(hen)多(duo)人(ren)在(zai)選(xuan)購(gou)時(shi)產(chan)生(sheng)疑(yi)惑(huo)

，為(wei)何(he)這(zhe)些(xie)是(shi)電(dian)位(wei)器(qi)而(er)那(na)些(xie)則(ze)是(shi)可(ke)調(tiao)電(dian)阻(zu)器(qi)呢(ne)？

 

實shi際ji上shang

，電dian位wei是shi一yi個ge名ming詞ci，表biao示shi選xuan區qu的de某mou一yi點dian相xiang對dui於yu參can照zhao點dian的de電dian壓ya。經jing常chang被bei用yong作zuo分fen壓ya以yi改gai變bian電dian路lu中zhong的de某mou一yi點dian的de電dian位wei，電dian位wei器qi是shi用yong於yu分fen壓ya的de可ke變bian電dian阻zu器qi。在zai裸luo露lu的de電dian阻zu體ti上shang，緊jin壓ya著zhe一yi至zhi兩liang個ge可ke移yi金jin屬shu觸chu點dian。觸chu點dian位wei置zhi確que定ding電dian阻zu體ti任ren一yi端duan與yu觸chu點dian間jian的de阻zu值zhi。

 

按材料分線繞、炭膜
、實芯式電位器。按輸出與輸入電壓比與旋轉角度的關係分直線式電位器（呈線性關係）

、函數電位器（呈曲線關係）。主要參數為阻值
、容差
、額定功率。廣泛用於電子設備
，在音響和接收機中作音量控製用。

 

電dian位wei器qi是shi一yi種zhong可ke調tiao的de電dian子zi元yuan件jian。它ta是shi由you一yi個ge電dian阻zu體ti和he一yi個ge轉zhuan動dong或huo滑hua動dong係xi統tong組zu成cheng。當dang電dian阻zu體ti的de兩liang個ge固gu定ding觸chu電dian之zhi間jian外wai加jia一yi個ge電dian壓ya時shi，通tong過guo轉zhuan動dong或huo滑hua動dong係xi統tong改gai變bian觸chu點dian在zai電dian阻zu體ti上shang的de位wei置zhi，在zai動dong觸chu點dian與yu固gu定ding觸chu點dian之zhi間jian便bian可ke得de到dao一yi個ge與yu動dong觸chu點dian位wei置zhi成cheng一yi定ding關guan係xi的de電dian壓ya。它ta大da多duo是shi用yong作zuo分fen壓ya器qi
，這zhe是shi電dian位wei器qi是shi一yi個ge四si端duan元yuan件jian。電dian位wei器qi基ji本ben上shang就jiu是shi滑hua動dong變bian阻zu器qi
，有you幾ji種zhong樣yang式shi，一yi般ban用yong在zai音yin箱xiang音yin量liang開kai關guan和he激ji光guang頭tou功gong率lv大da小xiao調tiao節jie，初chu中zhong電dian學xue實shi驗yan中zhong常chang用yong的de滑hua動dong變bian阻zu器qi就jiu是shi一yi種zhong常chang見jian的de線xian繞rao電dian位wei器qi。