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日期:2021-09-10瀏覽(lan):2225次
在(zai)電(dian)(dian)子實踐技術過程中(zhong),常常需要同時(shi)觀察兩種(或兩種以上)信號隨時(shi)間變化的過程。并對這些不同信號進行電(dian)(dian)
量(liang)的(de)測試和比較。為(wei)了達到這(zhe)個目的(de),人們在(zai)應用(yong)普(pu)通示(shi)(shi)波(bo)(bo)(bo)器(qi)原理的(de)基礎上,采用(yong)了以下兩種(zhong)(zhong)同時顯示(shi)(shi)多(duo)(duo)個波(bo)(bo)(bo)形的(de)方(fang)法(fa)(fa)(fa):一(yi)種(zhong)(zhong)是雙線(或(huo)多(duo)(duo)線)示(shi)(shi)波(bo)(bo)(bo)法(fa)(fa)(fa);另(ling)一(yi)種(zhong)(zhong)是雙蹤(zong)(或(huo)多(duo)(duo)蹤(zong))示(shi)(shi)波(bo)(bo)(bo)法(fa)(fa)(fa)。應用(yong)這(zhe)兩種(zhong)(zhong)方(fang)法(fa)(fa)(fa)制造出來的(de)示(shi)(shi)波(bo)(bo)(bo)器(qi)分別(bie)稱為(wei)雙線(或(huo)多(duo)(duo)線)示(shi)(shi)波(bo)(bo)(bo)器(qi)和雙蹤(zong)(或(huo)多(duo)(duo)蹤(zong))示(shi)(shi)波(bo)(bo)(bo)器(qi)。
雙(shuang)(shuang)線(或多線)示(shi)(shi)波(bo)(bo)(bo)器是(shi)采用(yong)雙(shuang)(shuang)槍(qiang)(qiang)(qiang)(或多槍(qiang)(qiang)(qiang))示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)來實(shi)現(xian)的(de)(de)(de)(de)。下(xia)(xia)(xia)面以(yi)雙(shuang)(shuang)槍(qiang)(qiang)(qiang)示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)為(wei)例加以(yi)簡單(dan)說明。雙(shuang)(shuang)槍(qiang)(qiang)(qiang)示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)有(you)兩(liang)個互(hu)相獨(du)(du)立(li)(li)的(de)(de)(de)(de)電(dian)(dian)子(zi)(zi)(zi)槍(qiang)(qiang)(qiang)產生兩(liang)束(shu)(shu)(shu)電(dian)(dian)子(zi)(zi)(zi)。另有(you)兩(liang)組互(hu)相獨(du)(du)立(li)(li)的(de)(de)(de)(de)偏轉系統(tong),它們(men)各(ge)自(zi)控制一束(shu)(shu)(shu)電(dian)(dian)子(zi)(zi)(zi)作(zuo)上(shang)(shang)下(xia)(xia)(xia)、左右的(de)(de)(de)(de)運動。熒(ying)光屏是(shi)共(gong)用(yong)的(de)(de)(de)(de),因而屏上(shang)(shang)可(ke)以(yi)同時顯示(shi)(shi)出兩(liang)種不(bu)同的(de)(de)(de)(de)電(dian)(dian)信號波(bo)(bo)(bo)形,雙(shuang)(shuang)線示(shi)(shi)波(bo)(bo)(bo)也可(ke)以(yi)采用(yong)單(dan)槍(qiang)(qiang)(qiang)雙(shuang)(shuang)線示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)來實(shi)現(xian)。這(zhe)種示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)只有(you)一個電(dian)(dian)子(zi)(zi)(zi)槍(qiang)(qiang)(qiang),在(zai)工作(zuo)時是(shi)依(yi)靠特殊的(de)(de)(de)(de)電(dian)(dian)極把(ba)電(dian)(dian)子(zi)(zi)(zi)分成兩(liang)束(shu)(shu)(shu)。然后,由(you)管(guan)(guan)內的(de)(de)(de)(de)兩(liang)組互(hu)相獨(du)(du)立(li)(li)的(de)(de)(de)(de)偏轉系統(tong),分別控制兩(liang)束(shu)(shu)(shu)電(dian)(dian)子(zi)(zi)(zi)上(shang)(shang)下(xia)(xia)(xia)、左右運動。熒(ying)光屏是(shi)共(gong)用(yong)的(de)(de)(de)(de),能同時顯示(shi)(shi)出兩(liang)種不(bu)同的(de)(de)(de)(de)電(dian)(dian)信號波(bo)(bo)(bo)形。由(you)于雙(shuang)(shuang)線示(shi)(shi)波(bo)(bo)(bo)管(guan)(guan)的(de)(de)(de)(de)制造工藝(yi)要求高,成本(ben)也高,所以(yi)應用(yong)并不(bu)十(shi)分普遍。
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