【電位(wei)器接(jie)(jie)法(fa)】電位(wei)器的工作原理(li)是什么 電位(wei)器怎么接(jie)(jie)

電位器怎么接

一般的電位器，中間的(de)(de)是動片，所(suo)以(yi)測量電(dian)(dian)阻的(de)(de)話1。3腳(jiao)是總電(dian)(dian)阻，動片動不(bu)動阻值都(dou)不(bu)會變，接(jie)12，阻值從順時針方(fang)向變大（動片動的(de)(de)話），接(jie)2，3就是反的(de)(de).6個(ge)(ge)腳(jiao)叫雙聯電(dian)(dian)位器，就是2個(ge)(ge)單聯做(zuo)在一起了(le)，8腳(jiao)的(de)(de)應該是帶(dai)了(le)一個(ge)(ge)開關(guan)，一般在汽車音(yin)響上用的(de)(de)教多(duo)。

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電位器的工作原理是什么

電(dian)(dian)位(wei)(wei)(wei)器(qi)，是(shi)用(yong)于分壓(ya)的(de)(de)可(ke)變電(dian)(dian)阻(zu)器(qi)。在裸(luo)露(lu)的(de)(de)電(dian)(dian)阻(zu)體上，緊(jin)壓(ya)著一(yi)至(zhi)兩(liang)個可(ke)移金屬觸(chu)點。觸(chu)點位(wei)(wei)(wei)置確(que)定電(dian)(dian)阻(zu)體任一(yi)端與(yu)(yu)觸(chu)點間(jian)的(de)(de)阻(zu)值。按材料分線(xian)繞、炭膜(mo)、實芯式電(dian)(dian)位(wei)(wei)(wei)器(qi)；按輸出(chu)與(yu)(yu)輸入(ru)電(dian)(dian)壓(ya)比與(yu)(yu)旋轉角度的(de)(de)關(guan)系(xi)分直線(xian)式電(dian)(dian)位(wei)(wei)(wei)器(qi)(呈線(xian)性關(guan)系(xi))、函(han)數電(dian)(dian)位(wei)(wei)(wei)器(qi)(呈曲線(xian)關(guan)系(xi))。主要參數為阻(zu)值、容差、額定功率。廣泛用(yong)于電(dian)(dian)子設備，在音(yin)響和接收機(ji)中作音(yin)量控(kong)制用(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)觸(chu)(chu)點(dian)(dian)與(yu)固定(ding)觸(chu)(chu)點(dian)(dian)之間便可(ke)(ke)得到一(yi)個(ge)(ge)與(yu)動(dong)(dong)觸(chu)(chu)點(dian)(dian)位(wei)置成一(yi)定(ding)關系(xi)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。它(ta)大(da)多是(shi)用(yong)作(zuo)分壓(ya)(ya)器，這是(shi)電(dian)(dian)(dian)(dian)(dian)位(wei)器是(shi)一(yi)個(ge)(ge)四端元件。電(dian)(dian)(dian)(dian)(dian)位(wei)器基本(ben)上就是(shi)滑(hua)動(dong)(dong)變(bian)阻(zu)器，有幾種(zhong)樣式，一(yi)般用(yong)在音(yin)箱音(yin)量開關和激光頭功率大(da)小調節(jie)電(dian)(dian)(dian)(dian)(dian)位(wei)器是(shi)一(yi)種(zhong)可(ke)(ke)調的(de)電(dian)(dian)(dian)(dian)(dian)子元件。它(ta)是(shi)由一(yi)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)阻(zu)體和一(yi)個(ge)(ge)轉動(dong)(dong)或(huo)滑(hua)動(dong)(dong)系(xi)統組成。當電(dian)(dian)(dian)(dian)(dian)阻(zu)體的(de)兩個(ge)(ge)固定(ding)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)之間外加一(yi)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)時(shi)，通過轉動(dong)(dong)或(huo)滑(hua)動(dong)(dong)系(xi)統改變(bian)觸(chu)(chu)點(dian)(dian)在電(dian)(dian)(dian)(dian)(dian)阻(zu)體上的(de)位(wei)置，在動(dong)(dong)觸(chu)(chu)點(dian)(dian)與(yu)固定(ding)觸(chu)(chu)點(dian)(dian)之間便可(ke)(ke)得到一(yi)個(ge)(ge)與(yu)動(dong)(dong)觸(chu)(chu)點(dian)(dian)位(wei)置成一(yi)定(ding)關系(xi)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。

電位器型號規格

線繞電位器：WXX、WX1、WX3、WXW1—1、WXJ2、WXJ4、WX—010．030．050、WX1.5—1、WXDJ—1、WX5—11。實芯電位器；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(de)(de)理論(lun)精度(du)。對于線(xian)(xian)繞電(dian)(dian)位(wei)(wei)器(qi)和(he)線(xian)(xian)性電(dian)(dian)位(wei)(wei)器(qi)來(lai)說，分(fen)辨力(li)是用動觸點(dian)在繞組上(shang)每移動一(yi)(yi)匝所引起的(de)(de)電(dian)(dian)阻變化(hua)量與總電(dian)(dian)阻的(de)(de)百分(fen)比表示。對于具有(you)函數(shu)特(te)性的(de)(de)電(dian)(dian)位(wei)(wei)器(qi)來(lai)說，由于繞組上(shang)每一(yi)(yi)匝的(de)(de)電(dian)(dian)阻不同(tong)，故(gu)分(fen)辨力(li)是個變量。此(ci)時，電(dian)(dian)位(wei)(wei)器(qi)的(de)(de)分(fen)辨力(li)一(yi)(yi)般是指(zhi)函數(shu)特(te)性曲線(xian)(xian)上(shang)斜(xie)率(lv)最大一(yi)(yi)段的(de)(de)平均分(fen)辨力(li)。