數字萬(wan)用表（Digital Multimeter，簡稱DMM）是(shi)一種用于測量電壓、電流和(he)電阻等(deng)電學參(can)數的便(bian)攜式儀(yi)器。無論是(shi)在電路設(she)計、電子設(she)備維修還是(shi)電子實驗中，數字萬(wan)用表都(dou)是(shi)必不可少的工具。

總(zong)之，數(shu)(shu)(shu)字(zi)(zi)萬(wan)用(yong)表是(shi)一(yi)種功能強大、使用(yong)方(fang)便的電(dian)(dian)(dian)子測(ce)(ce)量儀(yi)器(qi)。它可(ke)以測(ce)(ce)量電(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)流、電(dian)(dian)(dian)阻等電(dian)(dian)(dian)學參數(shu)(shu)(shu)，幫助我們進行(xing)電(dian)(dian)(dian)路(lu)測(ce)(ce)試和(he)故障排除(chu)。數(shu)(shu)(shu)字(zi)(zi)萬(wan)用(yong)表在(zai)電(dian)(dian)(dian)子工(gong)程領(ling)域的應用(yong)非(fei)常廣的，是(shi)電(dian)(dian)(dian)子工(gong)程師、電(dian)(dian)(dian)工(gong)、電(dian)(dian)(dian)子愛好(hao)者和(he)學生等必備的工(gong)具之一(yi)。無論是(shi)在(zai)實驗室、工(gong)廠還是(shi)家庭中，數(shu)(shu)(shu)字(zi)(zi)萬(wan)用(yong)表都(dou)發揮著重要作用(yong)，為我們提供了準確、可(ke)靠的電(dian)(dian)(dian)學測(ce)(ce)量結果。UT55標準型數(shu)(shu)(shu)字(zi)(zi)萬(wan)用(yong)表具備多種測(ce)(ce)量功能。深(shen)圳UT54數(shu)(shu)(shu)字(zi)(zi)萬(wan)用(yong)表服務商(shang)

生活中可能(neng)與(yu)使用到(dao)萬用表(biao)(biao)(biao)(biao)，但是(shi)萬用表(biao)(biao)(biao)(biao)如(ru)何使用卻不(bu)知(zhi)道(dao)，不(bu)知(zhi)道(dao)沒關系，不(bu)要著急，現在就來教大家如(ru)何解決。1.萬用表(biao)(biao)(biao)(biao)面板上主要由表(biao)(biao)(biao)(biao)頭、選擇(ze)開(kai)(kai)關、歐姆檔調(diao)零旋(xuan)鈕、表(biao)(biao)(biao)(biao)筆(bi)(bi)插孔(kong)。2.將(jiang)萬用表(biao)(biao)(biao)(biao)水平放置，檢查表(biao)(biao)(biao)(biao)針是(shi)否停在表(biao)(biao)(biao)(biao)盤左端的(de)(de)零，擇(ze)特將(jiang)表(biao)(biao)(biao)(biao)筆(bi)(bi)按要求(qiu)插入筆(bi)(bi)表(biao)(biao)(biao)(biao)插孔(kong)。3.再(zai)將(jiang)選擇(ze)開(kai)(kai)關旋(xuan)到(dao)相應(ying)的(de)(de)項目和(he)量(liang)程上，并(bing)進行要求(qiu)項目的(de)(de)測(ce)量(liang)，使用后(hou)將(jiang)選擇(ze)艷盆開(kai)(kai)關旋(xuan)至off檔。4.測(ce)量(liang)直(zhi)流(liu)電壓(ya)的(de)(de)步驟：根據(ju)電路(lu)中電源(yuan)電壓(ya)大小選擇(ze)量(liang)程，然(ran)(ran)后(hou)將(jiang)萬用表(biao)(biao)(biao)(biao)與(yu)被測(ce)電路(lu)并(bing)聯，然(ran)(ran)后(hou)視線(xian)正對指針讀數即可。湖北藍牙萬用表(biao)(biao)(biao)(biao)品牌(pai)我們的(de)(de)數字萬用表(biao)(biao)(biao)(biao)可以滿足不(bu)同行業(ye)和(he)應(ying)用的(de)(de)需求(qiu)。

如(ru)何用(yong)(yong)(yong)數字萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)使用(yong)(yong)(yong)數字萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),紅(hong)表(biao)(biao)(biao)(biao)筆為(wei)正(zheng)表(biao)(biao)(biao)(biao)筆,插(cha)入(ru)“mA"插(cha)孔或者“A"插(cha)孔,黑表(biao)(biao)(biao)(biao)筆為(wei)負(fu)(fu)表(biao)(biao)(biao)(biao)筆,插(cha)入(ru)“COM"插(cha)孔,測(ce)(ce)量(liang)(liang)(liang)選(xuan)擇開關旋轉到“直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)A”檔,傳(chuan)入(ru)被測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路即(ji)可(ke)測(ce)(ce)量(liang)(liang)(liang)。測(ce)(ce)量(liang)(liang)(liang)200mAI以下(xia)(xia)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi),紅(hong)表(biao)(biao)(biao)(biao)筆應插(cha)入(ru)"mA"插(cha)孔,測(ce)(ce)量(liang)(liang)(liang)200mA及以上直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),紅(hong)表(biao)(biao)(biao)(biao)筆應插(cha)入(ru)"A"插(cha)孔。例如(ru),測(ce)(ce)量(liang)(liang)(liang)一(yi)個直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)K的(de)工(gong)作電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu),首先如(ru)下(xia)(xia)圖(tu)所(suo)示斷開繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)K的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)回路,然后將(jiang)正(zheng)表(biao)(biao)(biao)(biao)筆接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池正(zheng)極,負(fu)(fu)表(biao)(biao)(biao)(biao)筆接(jie)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi),如(ru)下(xia)(xia)圖(tu)所(suo)示,液晶顯示的(de)數字即(ji)為(wei)被測(ce)(ce)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)的(de)工(gong)作電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)。數字萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)過(guo)程中如(ru)果(guo)(guo)(guo)正(zheng)、負(fu)(fu)表(biao)(biao)(biao)(biao)筆接(jie)扳,測(ce)(ce)結(jie)果(guo)(guo)(guo)將(jiang)顯示為(wei)負(fu)(fu)值(zhi)。用(yong)(yong)(yong)數字萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),可(ke)以不必考慮(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)方向,這在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)方向不明確(que)的(de)情況下(xia)(xia)特(te)別方便,同時(shi)測(ce)(ce)出了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)的(de)方向和大小。二(er)、用(yong)(yong)(yong)指針(zhen)式(shi)萬(wan)(wan)(wan)表(biao)(biao)(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)測(ce)(ce)量(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),指針(zhen)式(shi)萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)應串入(ru)被測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路,如(ru)下(xia)(xia)圖(tu)所(suo)示,既可(ke)以串入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源正(zheng)極與(yu)(yu)被測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路之間(jian)，也可(ke)以串入(ru)被測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路與(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源負(fu)(fu)極之間(jian)。測(ce)(ce)量(liang)(liang)(liang)500mA及其以下(xia)(xia)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),測(ce)(ce)量(liang)(liang)(liang)選(xuan)擇開關應選(xuan)擇:mA檔,測(ce)(ce)量(liang)(liang)(liang)"500mA"檔,并將(jiang)正(zheng)表(biao)(biao)(biao)(biao)筆插(cha)入(ru)"5A"插(cha)孔。測(ce)(ce)量(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi),指針(zhen)式(shi)萬(wan)(wan)(wan)用(yong)(yong)(yong)表(biao)(biao)(biao)(biao)的(de)讀數方法是(shi):滿度(du)值(zhi)(刻度(du)線右(you)邊)等于所(suo)選(xuan)量(liang)(liang)(liang)程檔位(wei)(wei)數,根據表(biao)(biao)(biao)(biao)針(zhen)指示位(wei)(wei)置(zhi)折算出測(ce)(ce)量(liang)(liang)(liang)結(jie)果(guo)(guo)(guo)。歡迎來電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)咨詢！

數(shu)字萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)的主要“特(te)長(chang)”萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)我們(men)又(you)俗稱“表(biao)(biao)(biao)”，它的主要特(te)長(chang)是綜合能力(li)強，好比(bi)“十(shi)八般武藝(yi)樣樣拿得起放得下(xia)”，不(bu)但(dan)可以(yi)測(ce)(ce)量交(jiao)流(liu)(liu)電(dian)(dian)流(liu)(liu)還可以(yi)測(ce)(ce)量交(jiao)流(liu)(liu)電(dian)(dian)壓(ya)、直(zhi)流(liu)(liu)電(dian)(dian)流(liu)(liu)和(he)電(dian)(dian)壓(ya)、電(dian)(dian)阻、電(dian)(dian)感、電(dian)(dian)容、音頻電(dian)(dian)平、二極管(guan)(guan)、晶體管(guan)(guan)放大(da)倍數(shu)、晶體管(guan)(guan)的類型等(deng)(deng)等(deng)(deng)，況且其測(ce)(ce)量準確要比(bi)鉗(qian)形電(dian)(dian)流(liu)(liu)表(biao)(biao)(biao)高出許多其精度(du)可達0.1，尤(you)其是數(shu)字萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)。對于大(da)電(dian)(dian)流(liu)(liu)來(lai)說可以(yi)測(ce)(ce)量高達10A的電(dian)(dian)流(liu)(liu)值，對于一(yi)般的設備(bei)足夠用(yong)(yong)(yong)(yong)了。我在(zai)維修(xiu)和(he)調(diao)試設備(bei)時十(shi)次我要有九(jiu)次用(yong)(yong)(yong)(yong)到萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)來(lai)完成任務。所以(yi)從使用(yong)(yong)(yong)(yong)頻率上說萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)的使用(yong)(yong)(yong)(yong)率要遠(yuan)遠(yuan)大(da)于鉗(qian)形電(dian)(dian)流(liu)(liu)表(biao)(biao)(biao)的使用(yong)(yong)(yong)(yong)率，因此我更認為(wei)萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)在(zai)維修(xiu)電(dian)(dian)器設備(bei)時好用(yong)(yong)(yong)(yong)。數(shu)字萬用(yong)(yong)(yong)(yong)表(biao)(biao)(biao)的阻抗測(ce)(ce)量功能可以(yi)幫助用(yong)(yong)(yong)(yong)戶檢(jian)測(ce)(ce)電(dian)(dian)路中的電(dian)(dian)阻值。

多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)安全安全使用(yong)(yong)(yong)(yong)(yong)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)首先要選擇(ze)適(shi)合應(ying)(ying)用(yong)(yong)(yong)(yong)(yong)、并滿(man)足(zu)(zu)應(ying)(ying)用(yong)(yong)(yong)(yong)(yong)環(huan)境的(de)(de)(de)(de)(de)數(shu)字(zi)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)。一旦選擇(ze)了合適(shi)的(de)(de)(de)(de)(de)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)，你就要按照(zhao)正(zheng)常(chang)(chang)(chang)的(de)(de)(de)(de)(de)應(ying)(ying)用(yong)(yong)(yong)(yong)(yong)程序去(qu)(qu)(qu)使用(yong)(yong)(yong)(yong)(yong)它。國(guo)際電(dian)(dian)子電(dian)(dian)工協會為在(zai)(zai)(zai)電(dian)(dian)力系(xi)統下(xia)工作制(zhi)定了新標(biao)準(zhun)(zhun)(zhun)。確認你正(zheng)在(zai)(zai)(zai)使用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)表(biao)(biao)(biao)滿(man)足(zu)(zu)IEC的(de)(de)(de)(de)(de)標(biao)準(zhun)(zhun)(zhun)，并且其(qi)額(e)定電(dian)(dian)壓滿(man)足(zu)(zu)現場應(ying)(ying)用(yong)(yong)(yong)(yong)(yong)要求。例(li)如，如果(guo)測(ce)量480V的(de)(de)(de)(de)(de)電(dian)(dian)力盤，你的(de)(de)(de)(de)(de)表(biao)(biao)(biao)就要足(zu)(zu)CATⅢ_600V的(de)(de)(de)(de)(de)標(biao)準(zhun)(zhun)(zhun)。這就意味(wei)著這塊表(biao)(biao)(biao)的(de)(de)(de)(de)(de)輸(shu)(shu)入電(dian)(dian)路被設計為能夠承(cheng)受在(zai)(zai)(zai)這種(zhong)(zhong)應(ying)(ying)用(yong)(yong)(yong)(yong)(yong)環(huan)境下(xia)的(de)(de)(de)(de)(de)瞬變(bian)而(er)不會傷害使用(yong)(yong)(yong)(yong)(yong)者。選擇(ze)標(biao)有(you)UL，CSA，CDE，TUV的(de)(de)(de)(de)(de)表(biao)(biao)(biao)，意味(wei)著這塊表(biao)(biao)(biao)不僅滿(man)足(zu)(zu)IEC標(biao)準(zhun)(zhun)(zhun)，還經過認證測(ce)試，并滿(man)足(zu)(zu)測(ce)試機構的(de)(de)(de)(de)(de)自(zi)(zi)己標(biao)準(zhun)(zhun)(zhun)。導(dao)致(zhi)數(shu)字(zi)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)損壞的(de)(de)(de)(de)(de)常(chang)(chang)(chang)見原因1、當(dang)探頭還在(zai)(zai)(zai)電(dian)(dian)流(liu)(liu)插孔中時，用(yong)(yong)(yong)(yong)(yong)其(qi)去(qu)(qu)(qu)測(ce)交流(liu)(liu)電(dian)(dian)壓2、在(zai)(zai)(zai)電(dian)(dian)阻(zu)模式時，去(qu)(qu)(qu)測(ce)交流(liu)(liu)電(dian)(dian)源3、承(cheng)受太(tai)高的(de)(de)(de)(de)(de)瞬變(bian)4、超(chao)過大輸(shu)(shu)入限(xian)制(zhi)（電(dian)(dian)壓和電(dian)(dian)流(liu)(liu)）數(shu)字(zi)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)保護(hu)(hu)電(dian)(dian)路的(de)(de)(de)(de)(de)種(zhong)(zhong)類1、自(zi)(zi)動恢復(fu)保護(hu)(hu)。某些(xie)表(biao)(biao)(biao)的(de)(de)(de)(de)(de)電(dian)(dian)路系(xi)統當(dang)探測(ce)到一個過載時，就會保護(hu)(hu)該表(biao)(biao)(biao)直至這種(zhong)(zhong)情況不再(zai)存在(zai)(zai)(zai)。過載被去(qu)(qu)(qu)除(chu)后(hou)(hou)，數(shu)字(zi)多(duo)用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)自(zi)(zi)動返回(hui)正(zheng)常(chang)(chang)(chang)運行狀態。通常(chang)(chang)(chang)被用(yong)(yong)(yong)(yong)(yong)來保護(hu)(hu)電(dian)(dian)阻(zu)功(gong)能，避免電(dian)(dian)壓過載。2、沒有(you)自(zi)(zi)動恢復(fu)功(gong)能。某些(xie)表(biao)(biao)(biao)探測(ce)到過載后(hou)(hou)會保護(hu)(hu)表(biao)(biao)(biao)，但不會自(zi)(zi)動恢復(fu)，直至使用(yong)(yong)(yong)(yong)(yong)者采取相應(ying)(ying)措施，如更換電(dian)(dian)阻(zu)，才(cai)能恢復(fu)使用(yong)(yong)(yong)(yong)(yong)。歡迎來電(dian)(dian)咨詢！使用(yong)(yong)(yong)(yong)(yong)數(shu)字(zi)萬用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)可(ke)以(yi)快速(su)準(zhun)(zhun)(zhun)確地測(ce)量電(dian)(dian)路中的(de)(de)(de)(de)(de)各種(zhong)(zhong)參數(shu)。貴州(zhou)藍牙(ya)萬用(yong)(yong)(yong)(yong)(yong)表(biao)(biao)(biao)UT17B PRO

我們的數字萬用表經過嚴格的質量(liang)控制和測試，保證穩定性和可靠性。深(shen)圳UT54數字萬用表服務商

數(shu)(shu)(shu)字(zi)萬(wan)用(yong)(yong)(yong)表(biao)(biao)可以測(ce)量(liang)發光二(er)(er)極(ji)(ji)(ji)(ji)管(guan)，整(zheng)流二(er)(er)極(ji)(ji)(ji)(ji)管(guan)……測(ce)量(liang)時(shi)，表(biao)(biao)筆(bi)(bi)位置(zhi)與電(dian)(dian)壓測(ce)量(liang)一樣，將旋鈕旋到"-|>|--"(不會(hui)畫這(zhe)個標志(zhi))檔；用(yong)(yong)(yong)紅(hong)表(biao)(biao)筆(bi)(bi)接(jie)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)的正(zheng)極(ji)(ji)(ji)(ji)，黑(hei)(hei)表(biao)(biao)筆(bi)(bi)接(jie)負極(ji)(ji)(ji)(ji)，這(zhe)時(shi)會(hui)顯(xian)示(shi)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)的正(zheng)向(xiang)壓降(jiang)。肖特基(ji)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)的壓降(jiang)是0.2V左右，普(pu)通硅整(zheng)流管(guan)（1N4000、1N5400系列(lie)等）約為(wei)(wei)(wei)0.7V，發光二(er)(er)極(ji)(ji)(ji)(ji)管(guan)約為(wei)(wei)(wei)1.8～2.3V。調(diao)換表(biao)(biao)筆(bi)(bi)，顯(xian)示(shi)屏顯(xian)示(shi)“1.”則(ze)(ze)(ze)為(wei)(wei)(wei)正(zheng)常，因為(wei)(wei)(wei)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)的反向(xiang)電(dian)(dian)阻(zu)很(hen)(hen)大(da)(da)，否(fou)則(ze)(ze)(ze)此管(guan)已被擊穿。對于(yu)指(zhi)針式(shi)萬(wan)用(yong)(yong)(yong)表(biao)(biao)，紅(hong)表(biao)(biao)筆(bi)(bi)表(biao)(biao)內接(jie)電(dian)(dian)池負極(ji)(ji)(ji)(ji)，黑(hei)(hei)表(biao)(biao)筆(bi)(bi)表(biao)(biao)內接(jie)電(dian)(dian)池正(zheng)極(ji)(ji)(ji)(ji)，所以使用(yong)(yong)(yong)指(zhi)針式(shi)表(biao)(biao)測(ce)二(er)(er)極(ji)(ji)(ji)(ji)管(guan)時(shi)若(ruo)阻(zu)值(zhi)很(hen)(hen)小，則(ze)(ze)(ze)黑(hei)(hei)表(biao)(biao)筆(bi)(bi)一端為(wei)(wei)(wei)正(zheng)極(ji)(ji)(ji)(ji)；若(ruo)阻(zu)值(zhi)很(hen)(hen)大(da)(da)，則(ze)(ze)(ze)紅(hong)表(biao)(biao)筆(bi)(bi)一端為(wei)(wei)(wei)負極(ji)(ji)(ji)(ji)。對于(yu)數(shu)(shu)(shu)字(zi)式(shi)萬(wan)用(yong)(yong)(yong)表(biao)(biao)，若(ruo)阻(zu)值(zhi)很(hen)(hen)小，紅(hong)表(biao)(biao)筆(bi)(bi)為(wei)(wei)(wei)正(zheng)極(ji)(ji)(ji)(ji)；阻(zu)值(zhi)大(da)(da)，黑(hei)(hei)表(biao)(biao)筆(bi)(bi)為(wei)(wei)(wei)負極(ji)(ji)(ji)(ji)。深(shen)圳UT54數(shu)(shu)(shu)字(zi)萬(wan)用(yong)(yong)(yong)表(biao)(biao)服務商

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