一、微調電位器怎么調

1、微調電位器阻值調節方法一：

微調電位器還有一(yi)(yi)般動片(pian)(pian)(pian)(pian)(pian)都是可以(yi)左右轉(zhuan)(zhuan)動，那么就可以(yi)用(yong)一(yi)(yi)字批(pi)螺絲刀伸入調節口中轉(zhuan)(zhuan)動。當動片(pian)(pian)(pian)(pian)(pian)逆時(shi)(shi)針方(fang)向轉(zhuan)(zhuan)動時(shi)(shi)，定(ding)片(pian)(pian)(pian)(pian)(pian)1和動片(pian)(pian)(pian)(pian)(pian)之(zhi)間(jian)的阻值(zhi)會(hui)相對減小，反之(zhi)動片(pian)(pian)(pian)(pian)(pian)與(yu)定(ding)片(pian)(pian)(pian)(pian)(pian)2之(zhi)間(jian)阻值(zhi)相對就會(hui)增大。而且動片(pian)(pian)(pian)(pian)(pian)轉(zhuan)(zhuan)動到最上端的位置時(shi)(shi)，定(ding)片(pian)(pian)(pian)(pian)(pian)l與(yu)動片(pian)(pian)(pian)(pian)(pian)引腳(jiao)之(zhi)間(jian)的阻值(zhi)就為零，而定(ding)片(pian)(pian)(pian)(pian)(pian)2與(yu)動片(pian)(pian)(pian)(pian)(pian)引腳(jiao)之(zhi)間(jian)的阻值(zhi)最大等于兩定(ding)片(pian)(pian)(pian)(pian)(pian)之(zhi)間(jian)的阻值(zhi)總和，也即是等于可調電阻器的標稱阻值(zhi)。

2、微調電位器阻值調節方法二：

微調電位(wei)器的(de)傳統調節方法(fa)，當動(dong)(dong)片(pian)順(shun)時(shi)針方向轉動(dong)(dong)時(shi)，電阻的(de)定(ding)片(pian)1與(yu)動(dong)(dong)片(pian)之(zhi)間(jian)(jian)阻值(zhi)會增大，此時(shi)的(de)動(dong)(dong)片(pian)與(yu)定(ding)片(pian)2之(zhi)間(jian)(jian)阻值(zhi)相對(dui)會減小。然后在當動(dong)(dong)片(pian)滑動(dong)(dong)至最下端的(de)位(wei)置時(shi)，最好的(de)可調電阻的(de)定(ding)片(pian)2與(yu)動(dong)(dong)片(pian)引(yin)腳之(zhi)間(jian)(jian)的(de)阻值(zhi)為零，動(dong)(dong)片(pian)與(yu)定(ding)片(pian)1之(zhi)間(jian)(jian)的(de)阻值(zhi)最大值(zhi)等于標稱阻值(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)微調電位(wei)器(qi)可(ke)直(zhi)接在印(yin)制電路(lu)板(ban)上安裝，但應(ying)注(zhu)意相(xiang)鄰(lin)元(yuan)件的排列(lie)，以保證電位(wei)器(qi)調節方便而(er)又不影響(xiang)相(xiang)鄰(lin)元(yuan)件。

2、.在(zai)可調電位器(qi)(qi)端(duan)子腳焊(han)(han)(han)(han)接(jie)的時候，要注意焊(han)(han)(han)(han)接(jie)溫度不要過高(gao)以(yi)及焊(han)(han)(han)(han)接(jie)時間(jian)不要過長，避免導(dao)致(zhi)損壞電位器(qi)(qi)。可調電位器(qi)(qi)在(zai)焊(han)(han)(han)(han)接(jie)時需要一塊(kuai)1.6mm厚的單面覆銅板作為基板，基板要用100℃左右溫度預(yu)熱(re)1分鐘。機器(qi)(qi)焊(han)(han)(han)(han)接(jie)溫度在(zai)260±5℃，手工焊(han)(han)(han)(han)接(jie)溫度在(zai)300±5℃，時間(jian)都是3秒。另外焊(han)(han)(han)(han)接(jie)時切忌使用焊(han)(han)(han)(han)錫流穿(chuan)線路板，并且(qie)不要讓端(duan)子腳受到重(zhong)壓(ya)，以(yi)免引起端(duan)子腳受損。

3、焊接時要調整(zheng)好助焊劑進入機器的高度(du)，要避免助焊劑流(liu)入到(dao)旋轉電位器內部，以免引起(qi)電刷和碳膜(mo)片之間運作(zuo)時接觸不良，產生電阻噪聲。

4、可調電(dian)(dian)位器(qi)在(zai)應用時(shi)最好放(fang)在(zai)電(dian)(dian)壓調節的(de)(de)電(dian)(dian)路結構(gou)中，且讓1腳接地(di)，盡量不(bu)要用在(zai)電(dian)(dian)流調節的(de)(de)電(dian)(dian)路結構(gou)中，因為電(dian)(dian)刷(shua)和碳膜片之間的(de)(de)接觸電(dian)(dian)阻阻礙(ai)了大電(dian)(dian)流調節。

5、天(tian)冷的(de)(de)時候(hou)在使用和(he)存放可(ke)調電(dian)位器時，要防止旋轉電(dian)位器的(de)(de)表面結露結霜產生水(shui)滴(di)，平(ping)時使用還要做(zuo)好防潮措施(shi)，以(yi)免降低電(dian)位器的(de)(de)絕緣(yuan)效果，給電(dian)路造成短(duan)路影響。