一、微調電位器怎么調

1、微調電位器阻值調節方法一：

微(wei)調電(dian)位(wei)器還有一般(ban)動(dong)(dong)(dong)片(pian)(pian)都(dou)是可以左右轉動(dong)(dong)(dong)，那么就(jiu)可以用一字批螺絲刀伸入調節(jie)口中(zhong)轉動(dong)(dong)(dong)。當動(dong)(dong)(dong)片(pian)(pian)逆時(shi)針方向(xiang)轉動(dong)(dong)(dong)時(shi)，定(ding)片(pian)(pian)1和動(dong)(dong)(dong)片(pian)(pian)之(zhi)間(jian)(jian)的(de)(de)阻(zu)值(zhi)會相(xiang)(xiang)對減小，反之(zhi)動(dong)(dong)(dong)片(pian)(pian)與(yu)定(ding)片(pian)(pian)2之(zhi)間(jian)(jian)阻(zu)值(zhi)相(xiang)(xiang)對就(jiu)會增(zeng)大。而且動(dong)(dong)(dong)片(pian)(pian)轉動(dong)(dong)(dong)到最上(shang)端的(de)(de)位(wei)置時(shi)，定(ding)片(pian)(pian)l與(yu)動(dong)(dong)(dong)片(pian)(pian)引(yin)腳之(zhi)間(jian)(jian)的(de)(de)阻(zu)值(zhi)就(jiu)為零，而定(ding)片(pian)(pian)2與(yu)動(dong)(dong)(dong)片(pian)(pian)引(yin)腳之(zhi)間(jian)(jian)的(de)(de)阻(zu)值(zhi)最大等于(yu)兩定(ding)片(pian)(pian)之(zhi)間(jian)(jian)的(de)(de)阻(zu)值(zhi)總和，也即是等于(yu)可調電(dian)阻(zu)器的(de)(de)標稱阻(zu)值(zhi)。

2、微調電位器阻值調節方法二：

微(wei)調(diao)電(dian)位器的(de)(de)傳統調(diao)節方(fang)法，當(dang)(dang)動片(pian)(pian)(pian)順時(shi)針(zhen)方(fang)向轉動時(shi)，電(dian)阻(zu)的(de)(de)定(ding)片(pian)(pian)(pian)1與動片(pian)(pian)(pian)之(zhi)(zhi)間阻(zu)值(zhi)會增大，此時(shi)的(de)(de)動片(pian)(pian)(pian)與定(ding)片(pian)(pian)(pian)2之(zhi)(zhi)間阻(zu)值(zhi)相對會減小。然后在當(dang)(dang)動片(pian)(pian)(pian)滑動至最(zui)下端的(de)(de)位置時(shi)，最(zui)好的(de)(de)可調(diao)電(dian)阻(zu)的(de)(de)定(ding)片(pian)(pian)(pian)2與動片(pian)(pian)(pian)引腳(jiao)之(zhi)(zhi)間的(de)(de)阻(zu)值(zhi)為零，動片(pian)(pian)(pian)與定(ding)片(pian)(pian)(pian)1之(zhi)(zhi)間的(de)(de)阻(zu)值(zhi)最(zui)大值(zhi)等于標稱阻(zu)值(zhi)。

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二、微調電位器在使用時的注意事項有哪些

1、各種(zhong)微調電(dian)(dian)位(wei)器可(ke)直接在印(yin)制電(dian)(dian)路板上安裝，但應注意相鄰元件(jian)的排列，以保證電(dian)(dian)位(wei)器調節方便而又不影響相鄰元件(jian)。

2、.在可調電位(wei)器端子腳(jiao)焊接(jie)(jie)(jie)的時(shi)(shi)(shi)(shi)候(hou)，要注意(yi)焊接(jie)(jie)(jie)溫(wen)度不(bu)(bu)要過(guo)(guo)高以及(ji)焊接(jie)(jie)(jie)時(shi)(shi)(shi)(shi)間不(bu)(bu)要過(guo)(guo)長，避免導致損(sun)壞(huai)電位(wei)器。可調電位(wei)器在焊接(jie)(jie)(jie)時(shi)(shi)(shi)(shi)需要一塊(kuai)1.6mm厚的單(dan)面(mian)覆銅板(ban)作為基(ji)板(ban)，基(ji)板(ban)要用100℃左右溫(wen)度預熱1分(fen)鐘。機器焊接(jie)(jie)(jie)溫(wen)度在260±5℃，手(shou)工焊接(jie)(jie)(jie)溫(wen)度在300±5℃，時(shi)(shi)(shi)(shi)間都是3秒。另(ling)外焊接(jie)(jie)(jie)時(shi)(shi)(shi)(shi)切忌使(shi)用焊錫流穿(chuan)線路板(ban)，并(bing)且(qie)不(bu)(bu)要讓端子腳(jiao)受到重(zhong)壓，以免引起端子腳(jiao)受損(sun)。

3、焊接時(shi)要調整好助焊劑(ji)進(jin)入(ru)機器的高度(du)，要避免助焊劑(ji)流入(ru)到旋轉電位器內(nei)部，以免引起(qi)電刷(shua)和碳(tan)膜片(pian)之間運(yun)作(zuo)時(shi)接觸(chu)不良，產生(sheng)電阻(zu)噪聲(sheng)。

4、可調電(dian)位器(qi)在(zai)(zai)應用(yong)時(shi)最好放在(zai)(zai)電(dian)壓調節的(de)電(dian)路結(jie)構(gou)中(zhong)，且讓(rang)1腳接地，盡量不(bu)要用(yong)在(zai)(zai)電(dian)流調節的(de)電(dian)路結(jie)構(gou)中(zhong)，因為電(dian)刷(shua)和碳(tan)膜片之間的(de)接觸(chu)電(dian)阻阻礙(ai)了大電(dian)流調節。

5、天(tian)冷(leng)的(de)時候在使(shi)用和(he)存放可調電(dian)位(wei)器(qi)時，要(yao)防止(zhi)旋(xuan)轉電(dian)位(wei)器(qi)的(de)表面結露結霜產生(sheng)水滴，平(ping)時使(shi)用還要(yao)做好防潮措施，以免降低電(dian)位(wei)器(qi)的(de)絕緣效果，給電(dian)路造成短(duan)路影(ying)響。