一、微調電位器怎么調

1、微調電位器阻值調節方法一：

微(wei)調(diao)電位器(qi)還有一般動(dong)片(pian)(pian)(pian)(pian)都是(shi)可(ke)以左右轉(zhuan)動(dong)，那(nei)么就可(ke)以用(yong)一字批(pi)螺絲刀伸入調(diao)節口中轉(zhuan)動(dong)。當動(dong)片(pian)(pian)(pian)(pian)逆時(shi)針方(fang)向轉(zhuan)動(dong)時(shi)，定(ding)片(pian)(pian)(pian)(pian)1和動(dong)片(pian)(pian)(pian)(pian)之(zhi)(zhi)(zhi)間(jian)的(de)(de)阻值會相對減小，反之(zhi)(zhi)(zhi)動(dong)片(pian)(pian)(pian)(pian)與(yu)定(ding)片(pian)(pian)(pian)(pian)2之(zhi)(zhi)(zhi)間(jian)阻值相對就會增大(da)。而(er)且動(dong)片(pian)(pian)(pian)(pian)轉(zhuan)動(dong)到(dao)最上(shang)端(duan)的(de)(de)位置時(shi)，定(ding)片(pian)(pian)(pian)(pian)l與(yu)動(dong)片(pian)(pian)(pian)(pian)引腳之(zhi)(zhi)(zhi)間(jian)的(de)(de)阻值就為零，而(er)定(ding)片(pian)(pian)(pian)(pian)2與(yu)動(dong)片(pian)(pian)(pian)(pian)引腳之(zhi)(zhi)(zhi)間(jian)的(de)(de)阻值最大(da)等于(yu)兩定(ding)片(pian)(pian)(pian)(pian)之(zhi)(zhi)(zhi)間(jian)的(de)(de)阻值總和，也即是(shi)等于(yu)可(ke)調(diao)電阻器(qi)的(de)(de)標(biao)稱阻值。

2、微調電位器阻值調節方法二：

微調電位(wei)器的(de)(de)(de)傳統調節方法(fa)，當(dang)動片(pian)(pian)順(shun)時(shi)針方向(xiang)轉動時(shi)，電阻的(de)(de)(de)定(ding)片(pian)(pian)1與動片(pian)(pian)之間(jian)(jian)阻值(zhi)(zhi)會(hui)增大，此(ci)時(shi)的(de)(de)(de)動片(pian)(pian)與定(ding)片(pian)(pian)2之間(jian)(jian)阻值(zhi)(zhi)相對會(hui)減小。然后在當(dang)動片(pian)(pian)滑動至最下端(duan)的(de)(de)(de)位(wei)置時(shi)，最好的(de)(de)(de)可調電阻的(de)(de)(de)定(ding)片(pian)(pian)2與動片(pian)(pian)引腳之間(jian)(jian)的(de)(de)(de)阻值(zhi)(zhi)為零，動片(pian)(pian)與定(ding)片(pian)(pian)1之間(jian)(jian)的(de)(de)(de)阻值(zhi)(zhi)最大值(zhi)(zhi)等于標稱阻值(zhi)(zhi)。

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二、微調電位器在使用時的注意事項有哪些

1、各(ge)種(zhong)微(wei)調電位器可直接在印(yin)制電路板上安裝，但應注意相鄰元件的排列，以保證電位器調節方便而又(you)不(bu)影響相鄰元件。

2、.在(zai)可調電(dian)位(wei)器(qi)(qi)端(duan)子腳焊接(jie)的時(shi)(shi)候，要(yao)注意(yi)焊接(jie)溫(wen)度(du)不要(yao)過(guo)高以(yi)及焊接(jie)時(shi)(shi)間不要(yao)過(guo)長，避免導致損(sun)壞電(dian)位(wei)器(qi)(qi)。可調電(dian)位(wei)器(qi)(qi)在(zai)焊接(jie)時(shi)(shi)需要(yao)一塊1.6mm厚的單面覆銅板(ban)作為基(ji)板(ban)，基(ji)板(ban)要(yao)用100℃左(zuo)右(you)溫(wen)度(du)預熱1分鐘。機器(qi)(qi)焊接(jie)溫(wen)度(du)在(zai)260±5℃，手工焊接(jie)溫(wen)度(du)在(zai)300±5℃，時(shi)(shi)間都是3秒。另外焊接(jie)時(shi)(shi)切忌(ji)使用焊錫(xi)流穿線路板(ban)，并且不要(yao)讓端(duan)子腳受到重壓，以(yi)免引起端(duan)子腳受損(sun)。

3、焊(han)接時要調整好助(zhu)焊(han)劑(ji)進(jin)入機器(qi)的高度，要避(bi)免(mian)助(zhu)焊(han)劑(ji)流入到(dao)旋(xuan)轉(zhuan)電位器(qi)內部，以免(mian)引起電刷和碳膜片之間(jian)運作時接觸不良(liang)，產生電阻噪聲。

4、可(ke)調電(dian)(dian)位器(qi)在(zai)應用時最好放在(zai)電(dian)(dian)壓調節的(de)(de)電(dian)(dian)路(lu)結構中，且(qie)讓(rang)1腳接地(di)，盡(jin)量不(bu)要用在(zai)電(dian)(dian)流(liu)調節的(de)(de)電(dian)(dian)路(lu)結構中，因為電(dian)(dian)刷和碳膜片之間的(de)(de)接觸(chu)電(dian)(dian)阻阻礙了大電(dian)(dian)流(liu)調節。

5、天冷的時候(hou)在使(shi)用和存(cun)放可調電位器時，要防止旋(xuan)轉(zhuan)電位器的表面結露(lu)結霜產生水滴，平(ping)時使(shi)用還要做好(hao)防潮措施，以免降(jiang)低(di)電位器的絕(jue)緣效(xiao)果，給(gei)電路(lu)(lu)造成短路(lu)(lu)影響。