一、碳膜電位器和繞線電位器區別在哪里

1、線繞電位器

線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)是由繞(rao)(rao)在(zai)骨架上的(de)電(dian)(dian)(dian)阻(zu)(zu)絲(si)線(xian)圈和(he)沿(yan)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)移(yi)動的(de)滑(hua)臂以及其上的(de)電(dian)(dian)(dian)刷組成(cheng)，骨架截(jie)面應(ying)處處相(xiang)等(deng)(deng)，由材料和(he)截(jie)面均勻的(de)電(dian)(dian)(dian)阻(zu)(zu)絲(si)等(deng)(deng)節距繞(rao)(rao)制(zhi)而成(cheng)。線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)的(de)電(dian)(dian)(dian)阻(zu)(zu)體(ti)大(da)多是采(cai)用(yong)的(de)多碳(tan)酸(suan)類的(de)合成(cheng)樹脂(zhi)(zhi)材料來制(zhi)成(cheng)的(de)，所以應(ying)該(gai)避(bi)(bi)免與以下這些(xie)物品直接(jie)(jie)(jie)接(jie)(jie)(jie)觸(chu)：氨水，其它胺(an)類，堿水溶液，芳(fang)香族(zu)碳(tan)氫化合物，酮(tong)類，脂(zhi)(zhi)類的(de)碳(tan)氫化合物，強烈化學(xue)品(酸(suan)堿值(zhi)過高)等(deng)(deng)，否則(ze)(ze)會影響線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)的(de)使(shi)用(yong)性能(neng)。線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)的(de)端子在(zai)焊(han)(han)接(jie)(jie)(jie)時應(ying)避(bi)(bi)免使(shi)用(yong)水溶性助(zhu)焊(han)(han)劑(ji)，否則(ze)(ze)將助(zhu)長(chang)金屬氧(yang)化與材料發霉，避(bi)(bi)免使(shi)用(yong)劣質(zhi)焊(han)(han)劑(ji)，焊(han)(han)錫(xi)不良(liang)(liang)可能(neng)造成(cheng)上錫(xi)困(kun)難，導致接(jie)(jie)(jie)觸(chu)不良(liang)(liang)或者斷路。線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)的(de)端子在(zai)焊(han)(han)接(jie)(jie)(jie)過程中若焊(han)(han)接(jie)(jie)(jie)溫度過高或焊(han)(han)接(jie)(jie)(jie)時間過長(chang)可能(neng)導致對線(xian)繞(rao)(rao)電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)的(de)損壞。插腳式端子焊(han)(han)接(jie)(jie)(jie)時應(ying)在(zai)235℃±5℃，3秒(miao)(miao)鐘(zhong)內完成(cheng)，焊(han)(han)接(jie)(jie)(jie)應(ying)離電(dian)(dian)(dian)位(wei)器(qi)(qi)(qi)本體(ti)1.5MM以上，焊(han)(han)接(jie)(jie)(jie)時勿(wu)使(shi)用(yong)焊(han)(han)錫(xi)流穿線(xian)路板，焊(han)(han)線(xian)式端子焊(han)(han)接(jie)(jie)(jie)時應(ying)在(zai)350℃±10℃，3秒(miao)(miao)鐘(zhong)內完成(cheng)。且端子應(ying)避(bi)(bi)免重壓，否則(ze)(ze)易造成(cheng)接(jie)(jie)(jie)觸(chu)不良(liang)(liang)。

該圖片由注冊用戶"淺嘗不止—"提供，版權聲明反饋

2、碳膜電位器

碳(tan)(tan)膜(mo)(mo)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)是(shi)(shi)在馬蹄形的(de)紙膠板上涂(tu)上一(yi)層碳(tan)(tan)膜(mo)(mo)而制成的(de)一(yi)種(zhong)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)。碳(tan)(tan)膜(mo)(mo)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)阻(zu)值(zhi)變(bian)化和中(zhong)間觸(chu)頭位(wei)(wei)(wei)(wei)置的(de)關(guan)(guan)系有直線式、對數式和指數式三(san)種(zhong)。碳(tan)(tan)膜(mo)(mo)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)有大型、小型、微型幾種(zhong)，有的(de)和開關(guan)(guan)一(yi)起組成帶(dai)開關(guan)(guan)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)。從外觀方面(mian)來看，脈沖電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)與(yu)普通電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)一(yi)樣(yang)都(dou)是(shi)(shi)三(san)個引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)，但在其內部與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)1、2相(xiang)連(lian)的(de)是(shi)(shi)兩個長(chang)短(duan)不一(yi)的(de)金(jin)屬靜片，與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)3相(xiang)連(lian)的(de)是(shi)(shi)一(yi)周(zhou)有12或24個齒的(de)金(jin)屬動片。當脈沖電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)旋轉時(shi)可出現(xian)四種(zhong)狀(zhuang)態(tai)：即引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)3與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)1相(xiang)連(lian)，引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)3與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)2及(ji)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)1全(quan)相(xiang)連(lian)。引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)3與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)2相(xiang)連(lian)，引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)3與(yu)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)2及(ji)引(yin)(yin)(yin)(yin)(yin)腳(jiao)(jiao)(jiao)(jiao)1全(quan)斷開。碳(tan)(tan)膜(mo)(mo)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)的(de)電(dian)(dian)(dian)(dian)阻(zu)體是(shi)(shi)用經過研磨的(de)碳(tan)(tan)黑(hei)、石墨、石英等材料涂(tu)敷(fu)于基體表面(mian)而成，該工藝(yi)簡單，是(shi)(shi)目(mu)前應用最(zui)廣泛的(de)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)。碳(tan)(tan)膜(mo)(mo)電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)器(qi)(qi)(qi)(qi)的(de)特點是(shi)(shi)分(fen)辨力高耐(nai)磨性好，壽(shou)命較長(chang)。缺(que)點是(shi)(shi)電(dian)(dian)(dian)(dian)流噪聲，非線性大，耐(nai)潮性以及(ji)阻(zu)值(zhi)穩定性差。

綜上所述，二者最大的區別(bie)是(shi)線(xian)繞(rao)電(dian)(dian)位(wei)(wei)器比碳膜(mo)電(dian)(dian)位(wei)(wei)器的功率(lv)大得多(duo)，前(qian)者可(ke)根據需要制(zhi)成功率(lv)不(bu)同(tong)的電(dian)(dian)位(wei)(wei)器。

二、碳膜電位器怎么修

1、替換法

有些(xie)碳(tan)(tan)膜(mo)(mo)電位(wei)器(qi)磨損(sun)嚴重，用摩(mo)擦清洗(xi)法(fa)根本就(jiu)(jiu)不能解決問(wen)題(ti)，比如(ru)接(jie)觸簧片與碳(tan)(tan)膜(mo)(mo)片發生斷裂(lie)，這樣(yang)的(de)問(wen)題(ti)一般都是采用替換法(fa)來(lai)解決。首先(xian)把(ba)損(sun)壞的(de)碳(tan)(tan)膜(mo)(mo)電位(wei)器(qi)從設備上拆下來(lai)，然(ran)后對(dui)它進行(xing)分(fen)拆，將(jiang)壞了的(de)簧片與碳(tan)(tan)膜(mo)(mo)片用以(yi)前(qian)廢舊電位(wei)器(qi)中(zhong)好的(de)進行(xing)替換再組(zu)合(he)就(jiu)(jiu)行(xing)了。

2、摩擦清洗法

剛開始碳膜(mo)電位(wei)器(qi)(qi)的(de)磨損還(huan)不(bu)(bu)嚴(yan)重，表(biao)現出來的(de)問題也只(zhi)是在調(diao)節時聲(sheng)音(yin)出現雜音(yin)或(huo)(huo)音(yin)量時大時小，畫面有一些(xie)雜波(bo)等，這主要是由于碳膜(mo)電位(wei)器(qi)(qi)在使用(yong)(yong)的(de)過程中侵入(ru)了灰塵或(huo)(huo)觸簧(huang)(huang)在與碳膜(mo)的(de)不(bu)(bu)斷摩(mo)擦下產(chan)生了塵埃從(cong)而污(wu)染(ran)了觸點，致(zhi)使觸簧(huang)(huang)與碳膜(mo)片(pian)接(jie)(jie)觸不(bu)(bu)良而產(chan)生的(de)。對于這種問題，經(jing)常(chang)使用(yong)(yong)的(de)修復方法首先前提(ti)是不(bu)(bu)斷的(de)來回滑動或(huo)(huo)旋轉電位(wei)器(qi)(qi)，這樣做可(ke)(ke)以去(qu)除觸點與碳膜(mo)片(pian)上(shang)的(de)污(wu)物(wu)，讓(rang)(rang)觸點變得(de)光潔(jie)，即使不(bu)(bu)清洗(xi)(xi)(xi)也能讓(rang)(rang)設備(bei)暫(zan)時恢復正常(chang)，這對于解決臨(lin)時問題不(bu)(bu)失為一個可(ke)(ke)取的(de)辦法。為了讓(rang)(rang)問題進(jin)一步(bu)的(de)得(de)到解決，我們就可(ke)(ke)以在摩(mo)擦之(zhi)后對電位(wei)器(qi)(qi)用(yong)(yong)清洗(xi)(xi)(xi)液進(jin)行清洗(xi)(xi)(xi)，徹(che)底洗(xi)(xi)(xi)掉電位(wei)器(qi)(qi)碳膜(mo)片(pian)上(shang)的(de)污(wu)物(wu)，讓(rang)(rang)簧(huang)(huang)片(pian)與碳膜(mo)片(pian)接(jie)(jie)觸良好。

3、潤滑保護法

為(wei)了(le)延(yan)長修理后的(de)電位(wei)器的(de)使用壽命，經常在碳(tan)膜(mo)電位(wei)器的(de)碳(tan)膜(mo)片上涂一(yi)點硅脂（縫(feng)紉機油也是可以），這樣做的(de)好處(chu)是可以防止(zhi)產生電弧(hu)，由(you)于硅脂的(de)潤滑作用減輕了(le)簧(huang)片與碳(tan)膜(mo)片的(de)摩擦，從(cong)而使電位(wei)器在調諧時(shi)電阻的(de)變化(hua)均衡平滑，效果良好。