免费无码精品黄AV电影_中文字幕人成乱码中文乱码_亚洲乱码精品久久久久.._国产精品久久午夜夜伦鲁鲁

交流毫伏表|TC-2172|

簡介：電(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)壓(ya)(ya)表(biao)是(shi)指(zhi)一種測(ce)量(liang)電(dian)(dian)(dian)(dian)壓(ya)(ya)用的(de)儀器。測(ce)量(liang)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)范圍(wei)大、頻率范圍(wei)廣。其(qi)輸入阻抗大，跨接后不(bu)致改變被測(ce)電(dian)(dian)(dian)(dian)路的(de)工作狀態(tai)，因而(er)能(neng)(neng)測(ce)得真實電(dian)(dian)(dian)(dian)壓(ya)(ya)。讀數(shu)已(yi)從指(zhi)針式(shi)逐(zhu)步過渡(du)為液晶顯示。并已(yi)具(ju)有編程(cheng)控制(zhi)，能(neng)(neng)自動換檔(dang)。

性能特點:測(ce)量(liang)電壓(ya)范圍廣,頻率范圍寬,測(ce)量(liang)準(zhun)確

具有(you)輸(shu)入端保(bao)護功能,帶(dai)有(you)1V交流輸(shu)出,自動復零

高阻抗,高靈敏(min),低噪聲,自動校正,量程(cheng)轉換(huan)不需(xu)要調(diao)零

主要技術指標:測量電壓范圍:100uV-300V

         ; 測量電壓(ya)的(de)固有誤差:±2%

測量(liang)電壓的頻率范圍(wei):5Hz-2MHz

輸入電阻:10MΩ

輸入電容:35PF

外型尺寸:140×166×240mm

電(dian)(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)(dian)壓表（又稱交流(liu)毫伏表）一(yi)般(ban)是(shi)指(zhi)模擬(ni)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)壓表。它是(shi)一(yi)種電(dian)(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)(dian)路中常(chang)用(yong)(yong)的測量儀表，采用(yong)(yong)磁電(dian)(dian)(dian)(dian)(dian)式(shi)(shi)表頭作(zuo)為(wei)指(zhi)示器，屬于指(zhi)針式(shi)(shi)儀表。電(dian)(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)(dian)壓表，不僅可以測量交流(liu)電(dian)(dian)(dian)(dian)(dian)壓，而且(qie)還可以用(yong)(yong)作(zuo)為(wei)一(yi)個寬頻帶、低噪聲、高(gao)增益(yi)的放大(da)器。

一般電(dian)子電(dian)壓表都由放大和檢(jian)波兩(liang)大部分組成。它(ta)們(men)主要由衰減器、交流電(dian)壓放大器、檢(jian)波器和整流電(dian)源四部分組成。

電(dian)子電(dian)壓(ya)表主要用(yong)于(yu)測量(liang)各種高(gao)、低頻(pin)信(xin)號電(dian)壓(ya)，它是電(dian)子測量(liang)中使用(yong)*泛的儀器之一。

工作原理：被(bei)測電(dian)(dian)壓先經(jing)衰(shuai)減器(qi)衰(shuai)減到適宜交(jiao)流放大(da)器(qi)輸入的數值，再經(jing)交(jiao)流電(dian)(dian)壓放大(da)器(qi)放大(da)，最后經(jing)檢波(bo)器(qi)檢波(bo)，得到直流電(dian)(dian)壓，由表頭指示數值的大(da)小(xiao)。

交流毫伏表|TC-2172|