【電(dian)位(wei)(wei)器(qi)接法】電(dian)位(wei)(wei)器(qi)的(de)工作原理是什么 電(dian)位(wei)(wei)器(qi)怎么接

電位器怎么接

一般的電位器，中間的是動(dong)片，所以測量電阻(zu)的話(hua)1。3腳(jiao)是總電阻(zu)，動(dong)片動(dong)不動(dong)阻(zu)值都不會變(bian)，接12，阻(zu)值從順時(shi)針(zhen)方向變(bian)大（動(dong)片動(dong)的話(hua)），接2，3就是反的.6個(ge)腳(jiao)叫雙聯電位器，就是2個(ge)單聯做在一(yi)起了，8腳(jiao)的應該(gai)是帶了一(yi)個(ge)開(kai)關，一(yi)般在汽車(che)音響上用(yong)的教多。

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電位器的工作原理是什么

電(dian)(dian)位(wei)器(qi)，是用(yong)于(yu)分壓的可變電(dian)(dian)阻器(qi)。在(zai)裸露的電(dian)(dian)阻體上，緊壓著(zhu)一至(zhi)兩個可移(yi)金屬觸(chu)點(dian)。觸(chu)點(dian)位(wei)置確定電(dian)(dian)阻體任一端(duan)與(yu)觸(chu)點(dian)間的阻值。按材料分線繞(rao)、炭膜、實芯(xin)式(shi)電(dian)(dian)位(wei)器(qi)；按輸出與(yu)輸入電(dian)(dian)壓比與(yu)旋轉角度(du)的關(guan)(guan)系分直線式(shi)電(dian)(dian)位(wei)器(qi)(呈(cheng)線性(xing)關(guan)(guan)系)、函數電(dian)(dian)位(wei)器(qi)(呈(cheng)曲線關(guan)(guan)系)。主要參數為阻值、容(rong)差、額定功率。廣泛(fan)用(yong)于(yu)電(dian)(dian)子設備(bei)，在(zai)音響和接(jie)收機中作音量控制(zhi)用(yong)。

當電阻體的兩個固定觸電之間外加一個電壓時，通過轉動或滑動系統改變觸點在電阻體上的(de)位(wei)置，在動(dong)(dong)(dong)觸(chu)(chu)點(dian)與固定觸(chu)(chu)點(dian)之間便可得到(dao)一(yi)(yi)(yi)個(ge)與動(dong)(dong)(dong)觸(chu)(chu)點(dian)位(wei)置成(cheng)(cheng)一(yi)(yi)(yi)定關(guan)系的(de)電(dian)(dian)(dian)壓(ya)。它(ta)大多(duo)是用作分壓(ya)器，這是電(dian)(dian)(dian)位(wei)器是一(yi)(yi)(yi)個(ge)四(si)端元件(jian)(jian)。電(dian)(dian)(dian)位(wei)器基本上就是滑(hua)動(dong)(dong)(dong)變(bian)阻(zu)(zu)器，有幾(ji)種樣式(shi)，一(yi)(yi)(yi)般用在音箱音量(liang)開關(guan)和激光頭功率(lv)大小調節電(dian)(dian)(dian)位(wei)器是一(yi)(yi)(yi)種可調的(de)電(dian)(dian)(dian)子元件(jian)(jian)。它(ta)是由一(yi)(yi)(yi)個(ge)電(dian)(dian)(dian)阻(zu)(zu)體和一(yi)(yi)(yi)個(ge)轉動(dong)(dong)(dong)或滑(hua)動(dong)(dong)(dong)系統組成(cheng)(cheng)。當電(dian)(dian)(dian)阻(zu)(zu)體的(de)兩(liang)個(ge)固定觸(chu)(chu)電(dian)(dian)(dian)之間外加一(yi)(yi)(yi)個(ge)電(dian)(dian)(dian)壓(ya)時，通(tong)過轉動(dong)(dong)(dong)或滑(hua)動(dong)(dong)(dong)系統改變(bian)觸(chu)(chu)點(dian)在電(dian)(dian)(dian)阻(zu)(zu)體上的(de)位(wei)置，在動(dong)(dong)(dong)觸(chu)(chu)點(dian)與固定觸(chu)(chu)點(dian)之間便可得到(dao)一(yi)(yi)(yi)個(ge)與動(dong)(dong)(dong)觸(chu)(chu)點(dian)位(wei)置成(cheng)(cheng)一(yi)(yi)(yi)定關(guan)系的(de)電(dian)(dian)(dian)壓(ya)。

電位器型號規格

線繞電位器(qi)：WXX、WX1、WX3、WXW1—1、WXJ2、WXJ4、WX—010．030．050、WX1.5—1、WXDJ—1、WX5—11。實芯電位器(qi)；WS、WS5、WSW30。

合成碳膜電(dian)位器(qi)：WTH、WH5、WH7、WH9、WH15、WH17、WT、WT—1、WT—3、WTX—3、WHJ、WHJ—X、WHW、WH—20、WI。

分辨力

分辨力決定于電位器的理(li)論精度。對于(yu)線(xian)繞(rao)(rao)電(dian)(dian)位(wei)(wei)器(qi)和線(xian)性電(dian)(dian)位(wei)(wei)器(qi)來說，分辨(bian)(bian)力(li)是用動(dong)觸點在繞(rao)(rao)組(zu)上每(mei)移動(dong)一(yi)匝(za)所(suo)引起的電(dian)(dian)阻(zu)(zu)變化量與總(zong)電(dian)(dian)阻(zu)(zu)的百分比表(biao)示。對于(yu)具有函數(shu)特(te)性的電(dian)(dian)位(wei)(wei)器(qi)來說，由于(yu)繞(rao)(rao)組(zu)上每(mei)一(yi)匝(za)的電(dian)(dian)阻(zu)(zu)不同，故分辨(bian)(bian)力(li)是個變量。此(ci)時，電(dian)(dian)位(wei)(wei)器(qi)的分辨(bian)(bian)力(li)一(yi)般是指函數(shu)特(te)性曲線(xian)上斜率最大一(yi)段(duan)的平均分辨(bian)(bian)力(li)。