【電(dian)位器(qi)(qi)(qi)接法】電(dian)位器(qi)(qi)(qi)的工作原理是(shi)什么(me) 電(dian)位器(qi)(qi)(qi)怎么(me)接

電位器怎么接

一般的電位器，中間的是(shi)(shi)動(dong)片，所以測量(liang)電(dian)阻(zu)的話1。3腳(jiao)是(shi)(shi)總(zong)電(dian)阻(zu)，動(dong)片動(dong)不動(dong)阻(zu)值都不會變(bian)，接12，阻(zu)值從順時針(zhen)方向變(bian)大（動(dong)片動(dong)的話），接2，3就是(shi)(shi)反的.6個(ge)腳(jiao)叫雙(shuang)聯電(dian)位器，就是(shi)(shi)2個(ge)單聯做在一起了，8腳(jiao)的應該是(shi)(shi)帶了一個(ge)開關，一般(ban)在汽(qi)車音響上用的教多。

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電位器的工作原理是什么

電(dian)(dian)位(wei)器(qi)，是(shi)用(yong)于分(fen)(fen)壓(ya)的(de)可變電(dian)(dian)阻器(qi)。在裸露的(de)電(dian)(dian)阻體(ti)上，緊壓(ya)著一至兩(liang)個可移金屬觸(chu)(chu)點。觸(chu)(chu)點位(wei)置確定(ding)電(dian)(dian)阻體(ti)任一端與觸(chu)(chu)點間的(de)阻值。按(an)(an)材料分(fen)(fen)線(xian)(xian)繞、炭膜、實(shi)芯式電(dian)(dian)位(wei)器(qi)；按(an)(an)輸出(chu)與輸入電(dian)(dian)壓(ya)比與旋(xuan)轉角(jiao)度的(de)關(guan)系(xi)分(fen)(fen)直線(xian)(xian)式電(dian)(dian)位(wei)器(qi)(呈線(xian)(xian)性(xing)關(guan)系(xi))、函數電(dian)(dian)位(wei)器(qi)(呈曲線(xian)(xian)關(guan)系(xi))。主要參數為阻值、容差、額(e)定(ding)功率。廣(guang)泛用(yong)于電(dian)(dian)子設備，在音響和接收機中作音量控制(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(shang)的(de)位(wei)(wei)置(zhi)(zhi)，在動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)與固(gu)定(ding)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)之(zhi)間(jian)(jian)便(bian)可(ke)得到一(yi)(yi)個(ge)(ge)與動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)位(wei)(wei)置(zhi)(zhi)成一(yi)(yi)定(ding)關系的(de)電(dian)(dian)(dian)壓。它大多是(shi)(shi)用(yong)作分壓器(qi)(qi)，這是(shi)(shi)電(dian)(dian)(dian)位(wei)(wei)器(qi)(qi)是(shi)(shi)一(yi)(yi)個(ge)(ge)四(si)端(duan)元(yuan)(yuan)件。電(dian)(dian)(dian)位(wei)(wei)器(qi)(qi)基本上(shang)就是(shi)(shi)滑動(dong)(dong)變阻(zu)器(qi)(qi)，有幾種樣式，一(yi)(yi)般用(yong)在音(yin)箱音(yin)量開關和(he)激光頭功率大小調(diao)節電(dian)(dian)(dian)位(wei)(wei)器(qi)(qi)是(shi)(shi)一(yi)(yi)種可(ke)調(diao)的(de)電(dian)(dian)(dian)子元(yuan)(yuan)件。它是(shi)(shi)由一(yi)(yi)個(ge)(ge)電(dian)(dian)(dian)阻(zu)體和(he)一(yi)(yi)個(ge)(ge)轉動(dong)(dong)或滑動(dong)(dong)系統(tong)組(zu)成。當電(dian)(dian)(dian)阻(zu)體的(de)兩(liang)個(ge)(ge)固(gu)定(ding)觸(chu)(chu)(chu)(chu)電(dian)(dian)(dian)之(zhi)間(jian)(jian)外加一(yi)(yi)個(ge)(ge)電(dian)(dian)(dian)壓時，通過轉動(dong)(dong)或滑動(dong)(dong)系統(tong)改變觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)在電(dian)(dian)(dian)阻(zu)體上(shang)的(de)位(wei)(wei)置(zhi)(zhi)，在動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)與固(gu)定(ding)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)之(zhi)間(jian)(jian)便(bian)可(ke)得到一(yi)(yi)個(ge)(ge)與動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)位(wei)(wei)置(zhi)(zhi)成一(yi)(yi)定(ding)關系的(de)電(dian)(dian)(dian)壓。

電位器型號規格

線(xian)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(mo)電位(wei)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(de)(de)(de)(de)理論精度(du)。對于線繞(rao)電(dian)位(wei)器(qi)(qi)和線性(xing)電(dian)位(wei)器(qi)(qi)來說(shuo)，分(fen)辨力(li)是(shi)用動觸點在(zai)繞(rao)組(zu)上(shang)每(mei)移動一(yi)(yi)匝(za)所(suo)引(yin)起的(de)(de)(de)(de)電(dian)阻(zu)(zu)變化量與總電(dian)阻(zu)(zu)的(de)(de)(de)(de)百(bai)分(fen)比表示(shi)。對于具有函(han)數(shu)(shu)特(te)性(xing)的(de)(de)(de)(de)電(dian)位(wei)器(qi)(qi)來說(shuo)，由于繞(rao)組(zu)上(shang)每(mei)一(yi)(yi)匝(za)的(de)(de)(de)(de)電(dian)阻(zu)(zu)不(bu)同，故分(fen)辨力(li)是(shi)個變量。此時，電(dian)位(wei)器(qi)(qi)的(de)(de)(de)(de)分(fen)辨力(li)一(yi)(yi)般是(shi)指函(han)數(shu)(shu)特(te)性(xing)曲線上(shang)斜率最大一(yi)(yi)段的(de)(de)(de)(de)平(ping)均分(fen)辨力(li)。