一、微調電位器怎么調

1、微調電位器阻值調節方法一：

微調(diao)電(dian)位器還有一般動(dong)片(pian)(pian)(pian)都是可(ke)以(yi)左右轉動(dong)，那么就可(ke)以(yi)用一字批螺絲刀伸入調(diao)節口中轉動(dong)。當動(dong)片(pian)(pian)(pian)逆時(shi)針(zhen)方(fang)向(xiang)轉動(dong)時(shi)，定(ding)片(pian)(pian)(pian)1和動(dong)片(pian)(pian)(pian)之(zhi)(zhi)間的(de)阻值(zhi)(zhi)會(hui)相對(dui)減小，反之(zhi)(zhi)動(dong)片(pian)(pian)(pian)與定(ding)片(pian)(pian)(pian)2之(zhi)(zhi)間阻值(zhi)(zhi)相對(dui)就會(hui)增大。而且(qie)動(dong)片(pian)(pian)(pian)轉動(dong)到最(zui)上端的(de)位置時(shi)，定(ding)片(pian)(pian)(pian)l與動(dong)片(pian)(pian)(pian)引(yin)(yin)腳之(zhi)(zhi)間的(de)阻值(zhi)(zhi)就為(wei)零，而定(ding)片(pian)(pian)(pian)2與動(dong)片(pian)(pian)(pian)引(yin)(yin)腳之(zhi)(zhi)間的(de)阻值(zhi)(zhi)最(zui)大等于兩定(ding)片(pian)(pian)(pian)之(zhi)(zhi)間的(de)阻值(zhi)(zhi)總和，也即(ji)是等于可(ke)調(diao)電(dian)阻器的(de)標稱阻值(zhi)(zhi)。

2、微調電位器阻值調節方法二：

微調(diao)電(dian)位器(qi)的(de)(de)(de)傳統(tong)調(diao)節方法，當動(dong)片(pian)(pian)順時(shi)針方向轉動(dong)時(shi)，電(dian)阻(zu)(zu)的(de)(de)(de)定(ding)(ding)片(pian)(pian)1與(yu)(yu)動(dong)片(pian)(pian)之(zhi)間(jian)阻(zu)(zu)值(zhi)會增大，此時(shi)的(de)(de)(de)動(dong)片(pian)(pian)與(yu)(yu)定(ding)(ding)片(pian)(pian)2之(zhi)間(jian)阻(zu)(zu)值(zhi)相對會減小。然后在(zai)當動(dong)片(pian)(pian)滑動(dong)至(zhi)最(zui)(zui)下端(duan)的(de)(de)(de)位置時(shi)，最(zui)(zui)好(hao)的(de)(de)(de)可調(diao)電(dian)阻(zu)(zu)的(de)(de)(de)定(ding)(ding)片(pian)(pian)2與(yu)(yu)動(dong)片(pian)(pian)引腳之(zhi)間(jian)的(de)(de)(de)阻(zu)(zu)值(zhi)為零，動(dong)片(pian)(pian)與(yu)(yu)定(ding)(ding)片(pian)(pian)1之(zhi)間(jian)的(de)(de)(de)阻(zu)(zu)值(zhi)最(zui)(zui)大值(zhi)等于標稱阻(zu)(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(wei)調電(dian)位器(qi)可直接在印制電(dian)路板(ban)上安裝，但應注意(yi)相(xiang)鄰(lin)元(yuan)(yuan)件(jian)的排列，以(yi)保證電(dian)位器(qi)調節方(fang)便而又不影響相(xiang)鄰(lin)元(yuan)(yuan)件(jian)。

2、.在可調(diao)電(dian)位器(qi)端(duan)子腳焊(han)(han)(han)接的時候(hou)，要注(zhu)意焊(han)(han)(han)接溫度(du)(du)不(bu)要過(guo)高以及焊(han)(han)(han)接時間(jian)不(bu)要過(guo)長(chang)，避免(mian)導致損壞電(dian)位器(qi)。可調(diao)電(dian)位器(qi)在焊(han)(han)(han)接時需要一塊1.6mm厚的單面覆銅板(ban)作為基板(ban)，基板(ban)要用(yong)100℃左右溫度(du)(du)預熱1分鐘。機器(qi)焊(han)(han)(han)接溫度(du)(du)在260±5℃，手(shou)工焊(han)(han)(han)接溫度(du)(du)在300±5℃，時間(jian)都(dou)是3秒。另(ling)外焊(han)(han)(han)接時切忌(ji)使用(yong)焊(han)(han)(han)錫流穿線路板(ban)，并(bing)且不(bu)要讓端(duan)子腳受到(dao)重壓，以免(mian)引起端(duan)子腳受損。

3、焊(han)接時要調整好助(zhu)焊(han)劑進入(ru)機器(qi)的(de)高度(du)，要避免助(zhu)焊(han)劑流入(ru)到(dao)旋轉電位器(qi)內部(bu)，以免引起電刷(shua)和碳膜片之間運(yun)作時接觸不良(liang)，產(chan)生電阻噪聲。

4、可(ke)調電(dian)位器在(zai)(zai)應用時最好放在(zai)(zai)電(dian)壓調節(jie)(jie)的電(dian)路(lu)結構中，且讓1腳接(jie)地(di)，盡(jin)量不要用在(zai)(zai)電(dian)流調節(jie)(jie)的電(dian)路(lu)結構中，因為(wei)電(dian)刷(shua)和碳膜(mo)片之(zhi)間的接(jie)觸電(dian)阻阻礙(ai)了大電(dian)流調節(jie)(jie)。

5、天冷的時候(hou)在使用和存放可調電(dian)(dian)(dian)(dian)位(wei)(wei)器(qi)時，要防止旋轉電(dian)(dian)(dian)(dian)位(wei)(wei)器(qi)的表面(mian)結露結霜產生(sheng)水(shui)滴，平時使用還要做好防潮措施，以免降低(di)電(dian)(dian)(dian)(dian)位(wei)(wei)器(qi)的絕緣效果，給電(dian)(dian)(dian)(dian)路(lu)造成短(duan)路(lu)影響(xiang)。