WEIGEL電流表RW96MIN翊霈優質供應

WEIGEL電流表RW96MIN翊霈優質供應

傳統的(de)指(zhi)針式電(dian)壓(ya)表(biao)(biao)和電(dian)流(liu)(liu)表(biao)(biao)都是根據(ju)一個(ge)原理就(jiu)(jiu)是電(dian)流(liu)(liu)的(de)磁(ci)效應。電(dian)流(liu)(liu)越(yue)大(da)，所產生的(de)磁(ci)力越(yue)大(da)，表(biao)(biao)現出的(de)就(jiu)(jiu)是電(dian)壓(ya)表(biao)(biao)上的(de)指(zhi)針的(de)擺幅越(yue)大(da)，電(dian)壓(ya)表(biao)(biao)內有(you)一個(ge)磁(ci)鐵(tie)和一個(ge)導線(xian)線(xian)圈(quan)，通過電(dian)流(liu)(liu)后，會使(shi)線(xian)圈(quan)產生磁(ci)場，線(xian)圈(quan)通電(dian)后在磁(ci)鐵(tie)的(de)作用下(xia)會發生偏轉，這(zhe)就(jiu)(jiu)是電(dian)流(liu)(liu)表(biao)(biao)、電(dian)壓(ya)表(biao)(biao)的(de)表(biao)(biao)頭(tou)部分。
由(you)(you)于電(dian)(dian)(dian)壓(ya)(ya)表要(yao)與被(bei)測電(dian)(dian)(dian)阻(zu)并(bing)聯(lian)，所以(yi)(yi)如果直接用(yong)靈(ling)敏電(dian)(dian)(dian)流計當電(dian)(dian)(dian)壓(ya)(ya)表用(yong)，表中(zhong)的電(dian)(dian)(dian)流過大(da)，會燒壞電(dian)(dian)(dian)表，這(zhe)時(shi)需要(yao)在電(dian)(dian)(dian)壓(ya)(ya)表的內(nei)部電(dian)(dian)(dian)路(lu)(lu)中(zhong)串聯(lian)一個(ge)(ge)很大(da)的電(dian)(dian)(dian)阻(zu)，這(zhe)樣改造后，當電(dian)(dian)(dian)壓(ya)(ya)表再并(bing)聯(lian)在電(dian)(dian)(dian)路(lu)(lu)中(zhong)時(shi)，由(you)(you)于電(dian)(dian)(dian)阻(zu)的作用(yong)，加(jia)在電(dian)(dian)(dian)表兩(liang)端的電(dian)(dian)(dian)壓(ya)(ya)絕大(da)部分都被(bei)這(zhe)個(ge)(ge)串聯(lian)的電(dian)(dian)(dian)阻(zu)分擔(dan)了，所以(yi)(yi)通過電(dian)(dian)(dian)表的電(dian)(dian)(dian)流實際上很小，所以(yi)(yi)就(jiu)可以(yi)(yi)正常(chang)使用(yong)了。
?主(zhu)要(yao)(yao)采用(yong)(yong)(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)和(he)(he)靜(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)。磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)由(you)小量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)與串(chuan)聯(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)(qi)(qi)(又稱分(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi))組(zu)成(cheng)(cheng)，低量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)十幾毫(hao)伏。為(wei)(wei)(wei)(wei)(wei)(wei)了(le)擴(kuo)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)，可(ke)以(yi)增(zeng)大(da)(da)分(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)。例(li)如用(yong)(yong)(yong)(yong)50微安的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)形(xing)成(cheng)(cheng)250伏的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)時(shi)(shi)，要(yao)(yao)使(shi)分(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)與測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)總電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)為(wei)(wei)(wei)(wei)(wei)(wei)250/[50×10^(-6)]=5×10^6歐(ou)(ou)=5兆歐(ou)(ou)，這(zhe)(zhe)相(xiang)當(dang)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)內(nei)(nei)阻(zu)為(wei)(wei)(wei)(wei)(wei)(wei)20千歐(ou)(ou)/伏。為(wei)(wei)(wei)(wei)(wei)(wei)了(le)避免電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)接入過(guo)多影響原工作(zuo)狀(zhuang)態，要(yao)(yao)求電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)有(you)較高的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)內(nei)(nei)阻(zu)。用(yong)(yong)(yong)(yong)幾個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)組(zu)成(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)分(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)和(he)(he)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)串(chuan)聯(lian)(lian)，可(ke)形(xing)成(cheng)(cheng)多量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)。靜(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)低量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)幾十伏，擴(kuo)大(da)(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)是靠改(gai)變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)內(nei)(nei)部(bu)結構(gou)(gou)(gou)和(he)(he)極間距離來(lai)(lai)達到。此(ci)外，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)在(zai)理(li)論上也(ye)可(ke)用(yong)(yong)(yong)(yong)于測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)直(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。?電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)是個(ge)(ge)(ge)大(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)(qi)(qi)，理(li)想的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)認(ren)為(wei)(wei)(wei)(wei)(wei)(wei)是斷路。在(zai)并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中并(bing)(bing)(bing)聯(lian)(lian)了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(跟(gen)別的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)并(bing)(bing)(bing)聯(lian)(lian))和(he)(he)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)，如果在(zai)干(gan)路中沒有(you)其他的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)，可(ke)以(yi)認(ren)為(wei)(wei)(wei)(wei)(wei)(wei)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(因(yin)為(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路上的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)全部(bu)享用(yong)(yong)(yong)(yong)了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))；如果干(gan)路中還(huan)(huan)連接其他的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)，那這(zhe)(zhe)個(ge)(ge)(ge)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)就(jiu)分(fen)(fen)享了(le)部(bu)分(fen)(fen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，那電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)只能是部(bu)分(fen)(fen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(連接在(zai)哪個(ge)(ge)(ge)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)就(jiu)是哪個(ge)(ge)(ge)用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))。進行研究(jiu)，他發明(ming)了(le)許多電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)儀器(qi)(qi)(qi)(qi)(qi)。1841年發明(ming)了(le)既可(ke)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)地(di)磁(ci)(ci)強度又可(ke)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強度的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)學(xue)單(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)雙線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)；1846年發明(ming)了(le)既可(ke)用(yong)(yong)(yong)(yong)來(lai)(lai)確定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強度的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)力(li)學(xue)單(dan)位(wei)(wei)(wei)(wei)又可(ke)用(yong)(yong)(yong)(yong)來(lai)(lai)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)交(jiao)(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功率的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功率表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)；1853年發明(ming)了(le)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)地(di)磁(ci)(ci)強度垂直(zhi)分(fen)(fen)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)地(di)磁(ci)(ci)感(gan)應器(qi)(qi)(qi)(qi)(qi)。韋伯在(zai)建立電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)學(xue)單(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)方(fang)面(mian)卓有(you)成(cheng)(cheng)效。他提(ti)出了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強度、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)勢(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)單(dan)位(wei)(wei)(wei)(wei)和(he)(he)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)方(fang)法(fa)；根據(ju)安培的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)力(li)學(xue)公式(shi)提(ti)出了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強度的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)力(li)學(xue)單(dan)位(wei)(wei)(wei)(wei)；還(huan)(huan)提(ti)出了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)單(dan)位(wei)(wei)(wei)(wei)。韋伯與柯(ke)爾勞(lao)施(shi)合作(zuo)測(ce)(ce)(ce)(ce)定了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)單(dan)位(wei)(wei)(wei)(wei)對(dui)靜(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)單(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)比值(zhi)(zhi)，發現這(zhe)(zhe)個(ge)(ge)(ge)比值(zhi)(zhi)等于3×10^8m/s，接近于光速。直(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)主(zhu)要(yao)(yao)采用(yong)(yong)(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)或(huo)(huo)(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)系(xi)(xi)(xi)(xi)(xi)(xi)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)(見(jian)機(ji)(ji)(ji)械式(shi)指示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou))，這(zhe)(zhe)些測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)基本量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)用(yong)(yong)(yong)(yong)來(lai)(lai)直(zhi)接測(ce)(ce)(ce)(ce)小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)于大(da)(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)直(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)要(yao)(yao)使(shi)用(yong)(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)，也(ye)就(jiu)是并(bing)(bing)(bing)聯(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)。它的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)(yong)是將(jiang)(jiang)大(da)(da)部(bu)分(fen)(fen)被測(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)約10A以(yi)下的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)多采用(yong)(yong)(yong)(yong)內(nei)(nei)附(fu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi);對(dui)更大(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)，則(ze)使(shi)用(yong)(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)。它采取四端(duan)結構(gou)(gou)(gou)(圖a)，具有(you)兩個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端(duan)，兩個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)端(duan)。其電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)選擇條件為(wei)(wei)(wei)(wei)(wei)(wei)：當(dang)標稱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通過(guo)該分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)時(shi)(shi)，其電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)端(duan)間的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)(wei)(wei)(wei)(wei)45mV或(huo)(huo)(huo)75mV;以(yi)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)45mV或(huo)(huo)(huo)75mV的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)(xi)毫(hao)伏表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)此(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)(zhi)，而(er)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)盤上則(ze)以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)刻(ke)度。對(dui)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)系(xi)(xi)(xi)(xi)(xi)(xi)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)，擴(kuo)大(da)(da)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)法(fa)是：①加(jia)粗(cu)(cu)靜(jing)(jing)(jing)圈(quan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)導(dao)線(xian)(xian)，同(tong)時(shi)(shi)減少(shao)匝(za)數(shu)以(yi)保持安匝(za)值(zhi)(zhi)不變(bian);②將(jiang)(jiang)兩靜(jing)(jing)(jing)圈(quan)由(you)串(chuan)聯(lian)(lian)改(gai)為(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)(bing)聯(lian)(lian)[圖(b)、(c)]，可(ke)使(shi)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)擴(kuo)大(da)(da)一倍。利用(yong)(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)和(he)(he)數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)可(ke)構(gou)(gou)(gou)成(cheng)(cheng)直(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數(shu)字(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)。交(jiao)(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)主(zhu)要(yao)(yao)采用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)和(he)(he)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)(xi)(xi)(xi)(xi)(xi)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)低量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)約為(wei)(wei)(wei)(wei)(wei)(wei)幾十毫(hao)安，為(wei)(wei)(wei)(wei)(wei)(wei)提(ti)高量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)，要(yao)(yao)按比例(li)減少(shao)線(xian)(xian)圈(quan)匝(za)數(shu)，并(bing)(bing)(bing)加(jia)粗(cu)(cu)導(dao)線(xian)(xian)。用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)系(xi)(xi)(xi)(xi)(xi)(xi)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)構(gou)(gou)(gou)成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)時(shi)(shi)，動(dong)(dong)圈(quan)與靜(jing)(jing)(jing)圈(quan)并(bing)(bing)(bing)聯(lian)(lian)，其低量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)約為(wei)(wei)(wei)(wei)(wei)(wei)幾十毫(hao)安。為(wei)(wei)(wei)(wei)(wei)(wei)提(ti)高量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)，要(yao)(yao)減少(shao)靜(jing)(jing)(jing)圈(quan)匝(za)數(shu)，并(bing)(bing)(bing)加(jia)粗(cu)(cu)導(dao)線(xian)(xian)，或(huo)(huo)(huo)將(jiang)(jiang)兩個(ge)(ge)(ge)靜(jing)(jing)(jing)圈(quan)由(you)串(chuan)聯(lian)(lian)改(gai)為(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)(bing)聯(lian)(lian)，則(ze)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)將(jiang)(jiang)增(zeng)大(da)(da)一倍。用(yong)(yong)(yong)(yong)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)交(jiao)(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi)(shi)，僅當(dang)交(jiao)(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)為(wei)(wei)(wei)(wei)(wei)(wei)正弦波形(xing)時(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)讀數(shu)才正確。為(wei)(wei)(wei)(wei)(wei)(wei)擴(kuo)大(da)(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)也(ye)可(ke)利用(yong)(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)。此(ci)外，也(ye)可(ke)用(yong)(yong)(yong)(yong)熱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)(ji)構(gou)(gou)(gou)測(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高頻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)系(xi)(xi)(xi)(xi)(xi)(xi)統(tong)中使(shi)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)交(jiao)(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)多是用(yong)(yong)(yong)(yong)5A或(huo)(huo)(huo)1A的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)(xi)(xi)(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)，并(bing)(bing)(bing)配以(yi)適當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)變(bian)比的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)互感(gan)器(qi)(qi)(qi)(qi)(qi)。???
要知(zhi)道(dao)在(zai)電(dian)(dian)(dian)(dian)(dian)壓表內，有(you)一個磁鐵(tie)和一個導(dao)線(xian)(xian)線(xian)(xian)圈(quan)(quan)，通(tong)過電(dian)(dian)(dian)(dian)(dian)流后，會(hui)使線(xian)(xian)圈(quan)(quan)產生磁場(chang)，這樣線(xian)(xian)圈(quan)(quan)通(tong)電(dian)(dian)(dian)(dian)(dian)后在(zai)磁鐵(tie)的(de)作用下會(hui)旋轉(zhuan)，這就是電(dian)(dian)(dian)(dian)(dian)流表、電(dian)(dian)(dian)(dian)(dian)壓表的(de)表頭部分(fen)。
這(zhe)個(ge)(ge)(ge)表(biao)(biao)頭(tou)所(suo)能(neng)通(tong)(tong)(tong)過(guo)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)很小(xiao)(xiao)，兩端所(suo)能(neng)承(cheng)受(shou)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓也很小(xiao)(xiao)（肯定遠小(xiao)(xiao)于1V，可能(neng)只(zhi)有零點零幾(ji)伏甚(shen)至更小(xiao)(xiao)），為了(le)(le)能(neng)測量實際(ji)電(dian)(dian)(dian)(dian)(dian)路中的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓，需(xu)要(yao)給(gei)這(zhe)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)壓表(biao)(biao)串聯一個(ge)(ge)(ge)比較(jiao)(jiao)大(da)(da)(da)(da)(da)(da)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)，做成電(dian)(dian)(dian)(dian)(dian)壓表(biao)(biao)。這(zhe)樣，即(ji)使兩端加(jia)上比較(jiao)(jiao)大(da)(da)(da)(da)(da)(da)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓，可是大(da)(da)(da)(da)(da)(da)部(bu)(bu)分(fen)電(dian)(dian)(dian)(dian)(dian)壓都作(zuo)用(yong)在加(jia)的(de)(de)(de)那個(ge)(ge)(ge)大(da)(da)(da)(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)阻(zu)上了(le)(le)，表(biao)(biao)頭(tou)上的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓就(jiu)會很小(xiao)(xiao)了(le)(le)。電(dian)(dian)(dian)(dian)(dian)壓表(biao)(biao)是一種內部(bu)(bu)電(dian)(dian)(dian)(dian)(dian)阻(zu)很大(da)(da)(da)(da)(da)(da)的(de)(de)(de)儀(yi)器，一般應該(gai)大(da)(da)(da)(da)(da)(da)于幾(ji)千歐。表(biao)(biao)頭(tou)是跟據通(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)導體(ti)在磁(ci)場(chang)(chang)中受(shou)磁(ci)場(chang)(chang)力的(de)(de)(de)作(zuo)用(yong)而制成的(de)(de)(de)。表(biao)(biao)內部(bu)(bu)有一永磁(ci)體(ti)，在極間產(chan)生(sheng)磁(ci)場(chang)(chang)，在磁(ci)場(chang)(chang)中有一個(ge)(ge)(ge)線(xian)圈，線(xian)圈兩端各有一個(ge)(ge)(ge)游絲彈(dan)簧，彈(dan)簧各連(lian)接(jie)表(biao)(biao)的(de)(de)(de)一個(ge)(ge)(ge)接(jie)線(xian)柱，在彈(dan)簧與(yu)線(xian)圈間由一個(ge)(ge)(ge)轉(zhuan)軸(zhou)連(lian)接(jie)，在轉(zhuan)軸(zhou)相對于電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)表(biao)(biao)的(de)(de)(de)前端，有一個(ge)(ge)(ge)指(zhi)針。當(dang)有電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)通(tong)(tong)(tong)過(guo)時，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)沿彈(dan)簧、轉(zhuan)軸(zhou)通(tong)(tong)(tong)過(guo)磁(ci)場(chang)(chang)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)切磁(ci)感線(xian)，所(suo)以受(shou)磁(ci)場(chang)(chang)力的(de)(de)(de)作(zuo)用(yong)，使線(xian)圈發生(sheng)偏轉(zhuan)，帶動轉(zhuan)軸(zhou)、指(zhi)針偏轉(zhuan)。由于磁(ci)場(chang)(chang)力的(de)(de)(de)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)隨電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)增(zeng)(zeng)大(da)(da)(da)(da)(da)(da)而增(zeng)(zeng)大(da)(da)(da)(da)(da)(da)，所(suo)以就(jiu)可以通(tong)(tong)(tong)過(guo)指(zhi)針的(de)(de)(de)偏轉(zhuan)程度來觀察電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)大(da)(da)(da)(da)(da)(da)小(xiao)(xiao)。

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傳統的(de)(de)指針式電(dian)壓(ya)表和(he)電(dian)流(liu)表都(dou)是根據一(yi)個(ge)原理就(jiu)是電(dian)流(liu)的(de)(de)磁(ci)效應。電(dian)流(liu)越(yue)(yue)大(da)，所產生(sheng)的(de)(de)磁(ci)力(li)越(yue)(yue)大(da)，表現(xian)出的(de)(de)就(jiu)是電(dian)壓(ya)表上的(de)(de)指針的(de)(de)擺(bai)幅越(yue)(yue)大(da)，電(dian)壓(ya)表內有一(yi)個(ge)磁(ci)鐵和(he)一(yi)個(ge)導線線圈，通(tong)過電(dian)流(liu)后(hou)，會(hui)使(shi)線圈產生(sheng)磁(ci)場，線圈通(tong)電(dian)后(hou)在磁(ci)鐵的(de)(de)作用下會(hui)發生(sheng)偏轉，這就(jiu)是電(dian)流(liu)表、電(dian)壓(ya)表的(de)(de)表頭部分。
由于(yu)電(dian)(dian)(dian)壓表(biao)(biao)要(yao)與被(bei)測電(dian)(dian)(dian)阻(zu)并聯，所(suo)(suo)(suo)以(yi)如果直(zhi)接用(yong)靈敏電(dian)(dian)(dian)流(liu)計當電(dian)(dian)(dian)壓表(biao)(biao)用(yong)，表(biao)(biao)中的(de)(de)電(dian)(dian)(dian)流(liu)過(guo)大(da)，會(hui)燒壞(huai)電(dian)(dian)(dian)表(biao)(biao)，這時(shi)需要(yao)在(zai)(zai)電(dian)(dian)(dian)壓表(biao)(biao)的(de)(de)內(nei)部電(dian)(dian)(dian)路中串(chuan)聯一個很大(da)的(de)(de)電(dian)(dian)(dian)阻(zu)，這樣改造(zao)后，當電(dian)(dian)(dian)壓表(biao)(biao)再并聯在(zai)(zai)電(dian)(dian)(dian)路中時(shi)，由于(yu)電(dian)(dian)(dian)阻(zu)的(de)(de)作用(yong)，加在(zai)(zai)電(dian)(dian)(dian)表(biao)(biao)兩端的(de)(de)電(dian)(dian)(dian)壓絕大(da)部分都被(bei)這個串(chuan)聯的(de)(de)電(dian)(dian)(dian)阻(zu)分擔了，所(suo)(suo)(suo)以(yi)通過(guo)電(dian)(dian)(dian)表(biao)(biao)的(de)(de)電(dian)(dian)(dian)流(liu)實(shi)際上很小，所(suo)(suo)(suo)以(yi)就可(ke)以(yi)正(zheng)常(chang)使用(yong)了。
?主要(yao)(yao)(yao)采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)和(he)(he)(he)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)。磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)由(you)小(xiao)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)與串(chuan)聯(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(又(you)稱分(fen)(fen)(fen)(fen)(fen)(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi))組(zu)成(cheng)，低(di)(di)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)十(shi)幾(ji)毫伏。為(wei)(wei)(wei)(wei)(wei)(wei)(wei)了(le)(le)(le)(le)(le)擴大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)，可(ke)以(yi)(yi)增(zeng)大(da)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)。例如(ru)用(yong)(yong)(yong)(yong)(yong)(yong)50微(wei)安的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)形成(cheng)250伏的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)時(shi)(shi)，要(yao)(yao)(yao)使(shi)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)與測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)總電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)250/[50×10^(-6)]=5×10^6歐=5兆歐，這(zhe)相(xiang)當于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)內(nei)阻(zu)(zu)(zu)(zu)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)20千歐/伏。為(wei)(wei)(wei)(wei)(wei)(wei)(wei)了(le)(le)(le)(le)(le)避免電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)接入過(guo)多(duo)影(ying)響原(yuan)工作狀(zhuang)態，要(yao)(yao)(yao)求電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)有較(jiao)高的(de)(de)(de)(de)(de)(de)(de)(de)內(nei)阻(zu)(zu)(zu)(zu)。用(yong)(yong)(yong)(yong)(yong)(yong)幾(ji)個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)組(zu)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)和(he)(he)(he)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)串(chuan)聯(lian)(lian)(lian)(lian)，可(ke)形成(cheng)多(duo)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)。靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)低(di)(di)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)幾(ji)十(shi)伏，擴大(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)是靠改變電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)內(nei)部(bu)(bu)結構(gou)(gou)(gou)(gou)(gou)和(he)(he)(he)極間距離來達到。此(ci)(ci)外，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)在理(li)論上也(ye)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。?電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)是個大(da)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，理(li)想的(de)(de)(de)(de)(de)(de)(de)(de)認(ren)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)是斷(duan)路(lu)(lu)。在并(bing)(bing)聯(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)并(bing)(bing)聯(lian)(lian)(lian)(lian)了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)(跟別的(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)并(bing)(bing)聯(lian)(lian)(lian)(lian))和(he)(he)(he)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，如(ru)果(guo)在干路(lu)(lu)中(zhong)(zhong)沒有其(qi)(qi)(qi)他(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，可(ke)以(yi)(yi)認(ren)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(因為(wei)(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)聯(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)上的(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)全部(bu)(bu)享用(yong)(yong)(yong)(yong)(yong)(yong)了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))；如(ru)果(guo)干路(lu)(lu)中(zhong)(zhong)還連(lian)接其(qi)(qi)(qi)他(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，那(nei)這(zhe)個用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)就分(fen)(fen)(fen)(fen)(fen)(fen)(fen)享了(le)(le)(le)(le)(le)部(bu)(bu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，那(nei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)(ce)的(de)(de)(de)(de)(de)(de)(de)(de)只能是部(bu)(bu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(連(lian)接在哪個用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)就是哪個用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))。進行研究，他(ta)(ta)發(fa)(fa)明了(le)(le)(le)(le)(le)許多(duo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)儀(yi)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。1841年(nian)(nian)發(fa)(fa)明了(le)(le)(le)(le)(le)既(ji)可(ke)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)地磁(ci)(ci)(ci)(ci)強(qiang)度(du)又(you)可(ke)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強(qiang)度(du)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)學單(dan)(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)雙線電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)；1846年(nian)(nian)發(fa)(fa)明了(le)(le)(le)(le)(le)既(ji)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)來確定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強(qiang)度(du)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)力(li)學單(dan)(dan)位(wei)(wei)(wei)(wei)又(you)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)來測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功率的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功率表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)；1853年(nian)(nian)發(fa)(fa)明了(le)(le)(le)(le)(le)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)地磁(ci)(ci)(ci)(ci)強(qiang)度(du)垂直(zhi)(zhi)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)地磁(ci)(ci)(ci)(ci)感(gan)應(ying)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。韋伯(bo)在建立(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)學單(dan)(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)方(fang)(fang)面(mian)卓有成(cheng)效。他(ta)(ta)提(ti)出了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強(qiang)度(du)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)和(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)勢的(de)(de)(de)(de)(de)(de)(de)(de)單(dan)(dan)位(wei)(wei)(wei)(wei)和(he)(he)(he)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)方(fang)(fang)法；根據安培(pei)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)力(li)學公式(shi)(shi)提(ti)出了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)強(qiang)度(du)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)力(li)學單(dan)(dan)位(wei)(wei)(wei)(wei)；還提(ti)出了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)的(de)(de)(de)(de)(de)(de)(de)(de)單(dan)(dan)位(wei)(wei)(wei)(wei)。韋伯(bo)與柯(ke)爾勞施合作測(ce)(ce)(ce)(ce)(ce)(ce)定(ding)了(le)(le)(le)(le)(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)單(dan)(dan)位(wei)(wei)(wei)(wei)對(dui)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)單(dan)(dan)位(wei)(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)(de)(de)比(bi)值(zhi)，發(fa)(fa)現這(zhe)個比(bi)值(zhi)等于(yu)3×10^8m/s，接近于(yu)光速。直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)主要(yao)(yao)(yao)采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)或電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)(見(jian)機(ji)(ji)械式(shi)(shi)指示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou))，這(zhe)些測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)基本量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)來直(zhi)(zhi)接測(ce)(ce)(ce)(ce)(ce)(ce)小(xiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)于(yu)大(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)值(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)要(yao)(yao)(yao)使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，也(ye)就是并(bing)(bing)聯(lian)(lian)(lian)(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)。它的(de)(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)(yong)(yong)(yong)(yong)是將(jiang)大(da)部(bu)(bu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)被(bei)測(ce)(ce)(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)約10A以(yi)(yi)下(xia)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)多(duo)采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)內(nei)附分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi);對(dui)更大(da)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)，則使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。它采(cai)(cai)取四端結構(gou)(gou)(gou)(gou)(gou)(圖(tu)(tu)a)，具(ju)有兩個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端，兩個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)端。其(qi)(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)選擇條件(jian)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)：當標稱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通過(guo)該分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)時(shi)(shi)，其(qi)(qi)(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)(wei)端間的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)45mV或75mV;以(yi)(yi)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)45mV或75mV的(de)(de)(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)毫伏表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)(ce)此(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)，而表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)盤上則以(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)刻度(du)。對(dui)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)，擴大(da)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)法是：①加粗(cu)靜(jing)圈的(de)(de)(de)(de)(de)(de)(de)(de)導(dao)線，同(tong)時(shi)(shi)減(jian)少(shao)匝(za)數(shu)以(yi)(yi)保持安匝(za)值(zhi)不變;②將(jiang)兩靜(jing)圈由(you)串(chuan)聯(lian)(lian)(lian)(lian)改為(wei)(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)聯(lian)(lian)(lian)(lian)[圖(tu)(tu)(b)、(c)]，可(ke)使(shi)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)擴大(da)一倍(bei)。利(li)用(yong)(yong)(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)和(he)(he)(he)數(shu)字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)可(ke)構(gou)(gou)(gou)(gou)(gou)成(cheng)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數(shu)字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)。交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)主要(yao)(yao)(yao)采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)和(he)(he)(he)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)的(de)(de)(de)(de)(de)(de)(de)(de)低(di)(di)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)約為(wei)(wei)(wei)(wei)(wei)(wei)(wei)幾(ji)十(shi)毫安，為(wei)(wei)(wei)(wei)(wei)(wei)(wei)提(ti)高量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)，要(yao)(yao)(yao)按比(bi)例減(jian)少(shao)線圈匝(za)數(shu)，并(bing)(bing)加粗(cu)導(dao)線。用(yong)(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)構(gou)(gou)(gou)(gou)(gou)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)時(shi)(shi)，動(dong)(dong)(dong)圈與靜(jing)圈并(bing)(bing)聯(lian)(lian)(lian)(lian)，其(qi)(qi)(qi)低(di)(di)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)約為(wei)(wei)(wei)(wei)(wei)(wei)(wei)幾(ji)十(shi)毫安。為(wei)(wei)(wei)(wei)(wei)(wei)(wei)提(ti)高量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)，要(yao)(yao)(yao)減(jian)少(shao)靜(jing)圈匝(za)數(shu)，并(bing)(bing)加粗(cu)導(dao)線，或將(jiang)兩個靜(jing)圈由(you)串(chuan)聯(lian)(lian)(lian)(lian)改為(wei)(wei)(wei)(wei)(wei)(wei)(wei)并(bing)(bing)聯(lian)(lian)(lian)(lian)，則電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)(de)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)將(jiang)增(zeng)大(da)一倍(bei)。用(yong)(yong)(yong)(yong)(yong)(yong)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)(ce)交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)時(shi)(shi)，僅(jin)當交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)為(wei)(wei)(wei)(wei)(wei)(wei)(wei)正弦波形時(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)讀數(shu)才正確。為(wei)(wei)(wei)(wei)(wei)(wei)(wei)擴大(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)也(ye)可(ke)利(li)用(yong)(yong)(yong)(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。此(ci)(ci)外，也(ye)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)熱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(gou)(gou)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高頻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)系(xi)(xi)統中(zhong)(zhong)使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)大(da)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)(cheng)(cheng)交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)多(duo)是用(yong)(yong)(yong)(yong)(yong)(yong)5A或1A的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(biao)，并(bing)(bing)配以(yi)(yi)適當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)變比(bi)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)互感(gan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。???
要知道(dao)在電(dian)(dian)(dian)(dian)壓表內，有一個磁(ci)(ci)鐵(tie)和(he)一個導線(xian)線(xian)圈(quan)，通過電(dian)(dian)(dian)(dian)流后(hou)，會使線(xian)圈(quan)產生(sheng)磁(ci)(ci)場，這樣線(xian)圈(quan)通電(dian)(dian)(dian)(dian)后(hou)在磁(ci)(ci)鐵(tie)的作用下會旋轉(zhuan)，這就是(shi)電(dian)(dian)(dian)(dian)流表、電(dian)(dian)(dian)(dian)壓表的表頭部分。
這個(ge)(ge)表(biao)頭(tou)所能(neng)通過(guo)的(de)(de)電(dian)(dian)流(liu)很小，兩端所能(neng)承受的(de)(de)電(dian)(dian)壓也很小（肯(ken)定遠小于(yu)1V，可(ke)能(neng)只有(you)(you)零(ling)點(dian)零(ling)幾(ji)(ji)伏甚至(zhi)更(geng)小），為了能(neng)測量實際電(dian)(dian)路中(zhong)的(de)(de)電(dian)(dian)壓，需要給這個(ge)(ge)電(dian)(dian)壓表(biao)串(chuan)聯一(yi)(yi)(yi)個(ge)(ge)比較大(da)的(de)(de)電(dian)(dian)阻，做成電(dian)(dian)壓表(biao)。這樣，即使兩端加上(shang)比較大(da)的(de)(de)電(dian)(dian)壓，可(ke)是(shi)大(da)部(bu)分電(dian)(dian)壓都作(zuo)用在(zai)(zai)加的(de)(de)那(nei)個(ge)(ge)大(da)電(dian)(dian)阻上(shang)了，表(biao)頭(tou)上(shang)的(de)(de)電(dian)(dian)壓就會很小了。電(dian)(dian)壓表(biao)是(shi)一(yi)(yi)(yi)種內部(bu)電(dian)(dian)阻很大(da)的(de)(de)儀器，一(yi)(yi)(yi)般應該大(da)于(yu)幾(ji)(ji)千(qian)歐。表(biao)頭(tou)是(shi)跟據(ju)通電(dian)(dian)導(dao)體在(zai)(zai)磁(ci)場中(zhong)受磁(ci)場力的(de)(de)作(zuo)用而制成的(de)(de)。表(biao)內部(bu)有(you)(you)一(yi)(yi)(yi)永磁(ci)體，在(zai)(zai)極間產生磁(ci)場，在(zai)(zai)磁(ci)場中(zhong)有(you)(you)一(yi)(yi)(yi)個(ge)(ge)線(xian)(xian)圈，線(xian)(xian)圈兩端各有(you)(you)一(yi)(yi)(yi)個(ge)(ge)游絲彈(dan)(dan)(dan)簧(huang)(huang)，彈(dan)(dan)(dan)簧(huang)(huang)各連(lian)接(jie)表(biao)的(de)(de)一(yi)(yi)(yi)個(ge)(ge)接(jie)線(xian)(xian)柱(zhu)，在(zai)(zai)彈(dan)(dan)(dan)簧(huang)(huang)與線(xian)(xian)圈間由(you)一(yi)(yi)(yi)個(ge)(ge)轉(zhuan)軸連(lian)接(jie)，在(zai)(zai)轉(zhuan)軸相對(dui)于(yu)電(dian)(dian)流(liu)表(biao)的(de)(de)前端，有(you)(you)一(yi)(yi)(yi)個(ge)(ge)指針。當(dang)有(you)(you)電(dian)(dian)流(liu)通過(guo)時，電(dian)(dian)流(liu)沿彈(dan)(dan)(dan)簧(huang)(huang)、轉(zhuan)軸通過(guo)磁(ci)場，電(dian)(dian)流(liu)切磁(ci)感線(xian)(xian)，所以(yi)受磁(ci)場力的(de)(de)作(zuo)用，使線(xian)(xian)圈發(fa)生偏轉(zhuan)，帶(dai)動轉(zhuan)軸、指針偏轉(zhuan)。由(you)于(yu)磁(ci)場力的(de)(de)大(da)小隨電(dian)(dian)流(liu)增(zeng)大(da)而增(zeng)大(da)，所以(yi)就可(ke)以(yi)通過(guo)指針的(de)(de)偏轉(zhuan)程度來觀察電(dian)(dian)流(liu)的(de)(de)大(da)小。
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