一、微調電位器怎么調

1、微調電位器阻值調節方法一：

微調電(dian)位器還有一般動(dong)(dong)(dong)片(pian)(pian)(pian)都是可(ke)以左(zuo)右(you)轉(zhuan)動(dong)(dong)(dong)，那么就可(ke)以用一字批螺(luo)絲刀伸入調節口中轉(zhuan)動(dong)(dong)(dong)。當動(dong)(dong)(dong)片(pian)(pian)(pian)逆時(shi)針(zhen)方向(xiang)轉(zhuan)動(dong)(dong)(dong)時(shi)，定片(pian)(pian)(pian)1和(he)動(dong)(dong)(dong)片(pian)(pian)(pian)之(zhi)(zhi)間的阻(zu)值(zhi)(zhi)會相(xiang)對(dui)(dui)減小，反之(zhi)(zhi)動(dong)(dong)(dong)片(pian)(pian)(pian)與定片(pian)(pian)(pian)2之(zhi)(zhi)間阻(zu)值(zhi)(zhi)相(xiang)對(dui)(dui)就會增大。而且(qie)動(dong)(dong)(dong)片(pian)(pian)(pian)轉(zhuan)動(dong)(dong)(dong)到(dao)最(zui)上端的位置時(shi)，定片(pian)(pian)(pian)l與動(dong)(dong)(dong)片(pian)(pian)(pian)引(yin)腳之(zhi)(zhi)間的阻(zu)值(zhi)(zhi)就為零，而定片(pian)(pian)(pian)2與動(dong)(dong)(dong)片(pian)(pian)(pian)引(yin)腳之(zhi)(zhi)間的阻(zu)值(zhi)(zhi)最(zui)大等于兩(liang)定片(pian)(pian)(pian)之(zhi)(zhi)間的阻(zu)值(zhi)(zhi)總和(he)，也即是等于可(ke)調電(dian)阻(zu)器的標稱阻(zu)值(zhi)(zhi)。

2、微調電位器阻值調節方法二：

微調(diao)電位(wei)器的(de)(de)(de)傳統調(diao)節方法，當動(dong)(dong)(dong)(dong)片(pian)(pian)順(shun)時(shi)針方向轉動(dong)(dong)(dong)(dong)時(shi)，電阻(zu)(zu)的(de)(de)(de)定片(pian)(pian)1與(yu)(yu)(yu)動(dong)(dong)(dong)(dong)片(pian)(pian)之(zhi)間(jian)(jian)阻(zu)(zu)值會增大(da)，此時(shi)的(de)(de)(de)動(dong)(dong)(dong)(dong)片(pian)(pian)與(yu)(yu)(yu)定片(pian)(pian)2之(zhi)間(jian)(jian)阻(zu)(zu)值相對會減小。然后在(zai)當動(dong)(dong)(dong)(dong)片(pian)(pian)滑動(dong)(dong)(dong)(dong)至最下端的(de)(de)(de)位(wei)置時(shi)，最好的(de)(de)(de)可(ke)調(diao)電阻(zu)(zu)的(de)(de)(de)定片(pian)(pian)2與(yu)(yu)(yu)動(dong)(dong)(dong)(dong)片(pian)(pian)引腳之(zhi)間(jian)(jian)的(de)(de)(de)阻(zu)(zu)值為零，動(dong)(dong)(dong)(dong)片(pian)(pian)與(yu)(yu)(yu)定片(pian)(pian)1之(zhi)間(jian)(jian)的(de)(de)(de)阻(zu)(zu)值最大(da)值等于標稱(cheng)阻(zu)(zu)值。

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二、微調電位器在使用時的注意事項有哪些

1、各種(zhong)微調(diao)(diao)電(dian)位器(qi)可直接在印(yin)制電(dian)路板上(shang)安(an)裝，但應注意相鄰元件的(de)排列，以保證電(dian)位器(qi)調(diao)(diao)節(jie)方便而(er)又不影響(xiang)相鄰元件。

2、.在(zai)(zai)(zai)可(ke)調電(dian)位器端(duan)子腳(jiao)焊(han)(han)接(jie)的時(shi)(shi)候，要注意焊(han)(han)接(jie)溫度(du)不(bu)要過高以及焊(han)(han)接(jie)時(shi)(shi)間不(bu)要過長，避免(mian)導(dao)致損(sun)壞(huai)電(dian)位器。可(ke)調電(dian)位器在(zai)(zai)(zai)焊(han)(han)接(jie)時(shi)(shi)需(xu)要一(yi)塊1.6mm厚(hou)的單面覆銅板(ban)(ban)作為基(ji)(ji)板(ban)(ban)，基(ji)(ji)板(ban)(ban)要用100℃左右(you)溫度(du)預熱1分鐘。機器焊(han)(han)接(jie)溫度(du)在(zai)(zai)(zai)260±5℃，手工焊(han)(han)接(jie)溫度(du)在(zai)(zai)(zai)300±5℃，時(shi)(shi)間都是(shi)3秒。另外焊(han)(han)接(jie)時(shi)(shi)切忌使用焊(han)(han)錫流(liu)穿線路板(ban)(ban)，并且不(bu)要讓端(duan)子腳(jiao)受到重(zhong)壓，以免(mian)引(yin)起端(duan)子腳(jiao)受損(sun)。

3、焊(han)(han)接(jie)時要(yao)調整好助焊(han)(han)劑(ji)進入機(ji)器的高度，要(yao)避(bi)免助焊(han)(han)劑(ji)流入到旋轉(zhuan)電位器內部，以(yi)免引(yin)起(qi)電刷和碳膜片之間(jian)運(yun)作時接(jie)觸不良(liang)，產生電阻噪聲(sheng)。

4、可調(diao)電(dian)位(wei)器在應用時最好放在電(dian)壓調(diao)節的電(dian)路(lu)結構中(zhong)，且讓(rang)1腳接(jie)地，盡量(liang)不要用在電(dian)流調(diao)節的電(dian)路(lu)結構中(zhong)，因為電(dian)刷和碳(tan)膜(mo)片(pian)之間的接(jie)觸(chu)電(dian)阻(zu)阻(zu)礙了(le)大電(dian)流調(diao)節。

5、天冷的(de)時候在(zai)使用(yong)(yong)和存放可(ke)調電位器(qi)時，要(yao)防止旋(xuan)轉(zhuan)電位器(qi)的(de)表面結(jie)露結(jie)霜(shuang)產生水滴(di)，平(ping)時使用(yong)(yong)還(huan)要(yao)做(zuo)好防潮措施，以(yi)免(mian)降低電位器(qi)的(de)絕緣效果(guo)，給電路(lu)造成短路(lu)影響。