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2023-04-25

ZX54實(shi)(shi)驗(yan)室(shi)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)是一種用(yong)(yong)于限制電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)氣元件,它通過(guo)降低電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓并使電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)降低來(lai)起到限流(liu)(liu)的(de)(de)(de)(de)(de)作用(yong)(yong)。該(gai)元件由(you)內部線圈(quan)和可調(diao)整(zheng)的(de)(de)(de)(de)(de)旋(xuan)轉(zhuan)旋(xuan)鈕組(zu)成,旋(xuan)鈕可以(yi)按照需要調(diao)節電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)值大(da)小(xiao)(xiao)(xiao)。它的(de)(de)(de)(de)(de)用(yong)(yong)途:ZX54實(shi)(shi)驗(yan)室(shi)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)廣泛應用(yong)(yong)于實(shi)(shi)驗(yan)室(shi)中,主要用(yong)(yong)于根據實(shi)(shi)驗(yan)需求在電(dian)(dian)(dian)(dian)(dian)路中加入一定(ding)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)。電(dian)(dian)(dian)(dian)(dian)路中電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)大(da)小(xiao)(xiao)(xiao)直(zhi)接(jie)受(shou)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)(de)(de)(de)大(da)小(xiao)(xiao)(xiao)和電(dian)(dian)(dian)(dian)(dian)壓大(da)小(xiao)(xiao)(xiao)的(de)(de)(de)(de)(de)影(ying)響,調(diao)節電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)的(de)(de)(de)(de)(de)旋(xuan)鈕可以(yi)改變電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)大(da)小(xiao)(xiao)(xiao),從而滿足不同(tong)的(de)(de)(de)(de)(de)實(shi)(shi)驗(yan)需求。此(ci)外,它還(huan)可以(yi)用(yong)(yong)于電(dian)(dian)(dian)(dian)(dian)源調(diao)節、電(dian)(dian)(dian)(dian)(dian)子測(ce)量(liang)以(yi)及(ji)溫(wen)度控制等(deng)方(fang)面的(de)(de)(de)(de)(de)實(shi)(shi)驗(yan)。它的(de)(de)(de)(de)(de)操(cao)作方(fang)法:1.連(lian)接(jie)電(dian)(dian)(dian)(dian)(dian)路。...

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2023-04-18

ZX68C兆歐(ou)(ou)表(biao)(biao)標(biao)準電(dian)(dian)(dian)阻器,是依據JJG622-89檢(jian)(jian)定(ding)規程要求(qiu)(qiu)制造(zao)。是國家要求(qiu)(qiu)對(dui)兆歐(ou)(ou)表(biao)(biao)及高絕緣(yuan)電(dian)(dian)(dian)阻測量(liang)儀器實行強檢(jian)(jian)的專用(yong)設(she)(she)備。它的工作原理:ZX68C兆歐(ou)(ou)表(biao)(biao)標(biao)準電(dian)(dian)(dian)阻器根據電(dian)(dian)(dian)阻串(chuan)聯原理設(she)(she)計(ji)制造(zao),通過(guo)轉動十(shi)進(jin)盤式(shi)開關(guan)進(jin)行輸出(chu)電(dian)(dian)(dian)阻值(zhi)的變換。電(dian)(dian)(dian)阻器十(shi)進(jin)讀數盤開關(guan)設(she)(she)計(ji)成適(shi)用(yong)于2500V電(dian)(dian)(dian)壓下(xia)使用(yong),采用(yong)高絕緣(yuan)材料和輕壓力結構(gou)。所有開關(guan)均為輕壓力式(shi),結構(gou)的優點是接(jie)觸壓力小,壽命(ming)長,接(jie)觸電(dian)(dian)(dian)阻與變差小,絕緣(yuan)電(dian)(dian)(dian)阻高等優點。整(zheng)個電(dian)(dian)(dian)阻器裝在金屬殼(ke)體內,設(she)(she)有靜(jing)電(dian)(dian)(dian)屏蔽(bi)和接(jie)地(di)端(duan)鈕,具(ju)有很好的靜(jing)電(dian)(dian)(dian)屏蔽(bi)作用(yong)...

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2023-04-18

JJZ-5A絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)(zu)表檢定(ding)(ding)裝置(zhi)是一(yi)種常見的(de)電(dian)器(qi)(qi)儀(yi)器(qi)(qi),主要用(yong)于測試(shi)(shi)(shi)(shi)電(dian)器(qi)(qi)設(she)(she)備(bei)(bei)的(de)絕(jue)緣(yuan)(yuan)性能(neng)。它可(ke)以測量設(she)(she)備(bei)(bei)的(de)漏(lou)電(dian)流(liu),漏(lou)電(dian)阻(zu)(zu)(zu)值(zhi)等(deng)參數(shu),從而保證(zheng)設(she)(she)備(bei)(bei)的(de)安(an)全(quan)性和可(ke)靠性。本文將(jiang)(jiang)(jiang)介紹(shao)如何使用(yong)JJZ-5A絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)(zu)表檢定(ding)(ding)裝置(zhi)。第一(yi)步:連接(jie)測試(shi)(shi)(shi)(shi)儀(yi)器(qi)(qi)首先,將(jiang)(jiang)(jiang)絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)(zu)表和待(dai)測設(she)(she)備(bei)(bei)連接(jie)起來(lai)。將(jiang)(jiang)(jiang)測試(shi)(shi)(shi)(shi)頭插(cha)入設(she)(she)備(bei)(bei)中的(de)插(cha)座,插(cha)頭插(cha)入測試(shi)(shi)(shi)(shi)儀(yi)器(qi)(qi)。確保連接(jie)是緊(jin)密的(de),不(bu)易松動。接(jie)著,按下測試(shi)(shi)(shi)(shi)儀(yi)器(qi)(qi)的(de)電(dian)源開關,待(dai)測試(shi)(shi)(shi)(shi)儀(yi)器(qi)(qi)開始工作后(hou),即可(ke)進行測試(shi)(shi)(shi)(shi)。第二步:設(she)(she)置(zhi)測試(shi)(shi)(shi)(shi)參數(shu)在選擇(ze)測試(shi)(shi)(shi)(shi)參數(shu)時應考慮設(she)(she)備(bei)(bei)的(de)額定(ding)(ding)電(dian)壓、絕(jue)緣(yuan)(yuan)等(deng)級、安(an)全(quan)系數(shu)等(deng)。...

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2023-04-18

數字直流(liu)單臂(bei)(bei)電橋采用恒(heng)流(liu)源供(gong)電,這樣(yang)電橋的(de)(de)(de)輸(shu)(shu)(shu)出(chu)不受溫度的(de)(de)(de)影響。單臂(bei)(bei)電橋檢測出(chu)電阻(zu)的(de)(de)(de)變(bian)化后(hou),經(jing)過(guo)差分放大器,輸(shu)(shu)(shu)出(chu)信(xin)(xin)號再經(jing)過(guo)電壓電流(liu)的(de)(de)(de)轉換,變(bian)換成相應(ying)的(de)(de)(de)電流(liu),該(gai)電流(liu)信(xin)(xin)號通(tong)過(guo)非線(xian)性矯正電路(lu)的(de)(de)(de)補償,即產(chan)(chan)生與輸(shu)(shu)(shu)入信(xin)(xin)號成線(xian)性關系(xi)的(de)(de)(de)DC4~20mA標(biao)準輸(shu)(shu)(shu)出(chu)信(xin)(xin)號。應(ying)力作用到半(ban)導體材(cai)(cai)(cai)料(liao)(liao)上(shang),除(chu)會產(chan)(chan)生形變(bian)外,材(cai)(cai)(cai)料(liao)(liao)的(de)(de)(de)電阻(zu)率(lv)亦隨之而(er)變(bian)。這種(zhong)由(you)于應(ying)力作用而(er)使(shi)材(cai)(cai)(cai)料(liao)(liao)電阻(zu)率(lv)改(gai)變(bian)的(de)(de)(de)現象稱為壓阻(zu)效應(ying)。產(chan)(chan)品特征:1、本產(chan)(chan)品系(xi)一單電橋,主要由(you)比(bi)例臂(bei)(bei)、比(bi)較臂(bei)(bei)、放大臂(bei)(bei)、指(zhi)零儀(yi)及電池(chi)組(zu)等組(zu)合而(er)成。2、比(bi)較臂(bei)(bei)由(you)四個十(shi)進盤(pan)組(zu)成...

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2023-01-28

數字電(dian)(dian)位差計的(de)(de)種類很多,常見的(de)(de)有板式(shi)和(he)箱式(shi)兩種。板式(shi)數字電(dian)(dian)位差計具有結構簡單、直(zhi)觀,便于分析討論等優點(dian),但它的(de)(de)電(dian)(dian)阻絲不(bu)(bu)(bu)可(ke)能均勻,長度(du)也不(bu)(bu)(bu)十(shi)分準(zhun)(zhun)確(que),存在(zai)一(yi)定的(de)(de)測(ce)(ce)量誤差,且體積大(da)(da),使用不(bu)(bu)(bu)便,箱式(shi)克服板式(shi)的(de)(de)缺點(dian),準(zhun)(zhun)確(que)度(du)更高、更為實用。相同點(dian):1、兩種數字電(dian)(dian)位差計的(de)(de)構想原(yuan)理都(dou)是(shi)電(dian)(dian)路(lu)補(bu)償(chang)原(yuan)理;2、在(zai)測(ce)(ce)量過(guo)程中,都(dou)不(bu)(bu)(bu)需要測(ce)(ce)出線(xian)路(lu)中電(dian)(dian)流(liu)的(de)(de)大(da)(da)小;3、當補(bu)償(chang)時,測(ce)(ce)量回路(lu)與被(bei)測(ce)(ce)量回路(lu)間無電(dian)(dian)流(liu)流(liu)過(guo),無須從被(bei)測(ce)(ce)電(dian)(dian)路(lu)中取(qu)用電(dian)(dian)流(liu);4、測(ce)(ce)量的(de)(de)準(zhun)(zhun)確(que)度(du)都(dou)是(shi)依賴(lai)于標(biao)準(zhun)(zhun)電(dian)(dian)池E3、補(bu)償(chang)電(dian)(dian)阻R和(he)Rx以及工(gong)作(zuo)電(dian)(dian)流(liu)的(de)(de)穩定...

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2022-11-28

SB2230直(zhi)(zhi)流(liu)(liu)(liu)數(shu)(shu)字(zi)電(dian)(dian)阻測(ce)量儀是新一代電(dian)(dian)力(li)變壓器直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)阻的(de)檢測(ce)設(she)備,它能依據不(bu)同的(de)型號的(de)電(dian)(dian)力(li)變壓器系統自動挑(tiao)選檢測(ce)電(dian)(dian)流(liu)(liu)(liu),以最快(kuai)的(de)速度顯示檢測(ce)結果。它并(bing)且有著儲(chu)存、打印、放電(dian)(dian)指(zhi)示等基本功能,內置(zhi)不(bu)斷電(dian)(dian)儲(chu)存器,可長期(qi)性保存精確測(ce)量數(shu)(shu)據,液晶顯示屏的(de)采用使得該儀器人機界面良好(hao),是直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)阻檢測(ce)工作中的(de)選擇設(she)備。目前(qian),SB2230直(zhi)(zhi)流(liu)(liu)(liu)數(shu)(shu)字(zi)電(dian)(dian)阻測(ce)量儀是測(ce)量大容量變壓器直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)阻設(she)計(ji)的(de)新型儀器,是設(she)計(ji)成(cheng)一體(ti)的(de)高(gao)精度穩流(liu)(liu)(liu)電(dian)(dian)源(yuan)及測(ce)試部分組成(cheng),測(ce)試過程(cheng)微(wei)機控制,自動完(wan)成(cheng)穩流(liu)(liu)(liu)判斷、數(shu)(shu)據采集、數(shu)(shu)據處理...

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2022-10-26

QJ84數(shu)(shu)字直(zhi)(zhi)流(liu)電(dian)橋(qiao)(qiao)(qiao),是指測量(liang)直(zhi)(zhi)流(liu)電(dian)阻(zu)(zu)(zu)或其變化量(liang)的(de)電(dian)橋(qiao)(qiao)(qiao)。直(zhi)(zhi)流(liu)電(dian)橋(qiao)(qiao)(qiao)是以(yi)惠斯(si)登(deng)電(dian)橋(qiao)(qiao)(qiao)線(xian)路為基礎,用精(jing)密(mi)合金繞線(xian)電(dian)阻(zu)(zu)(zu)為基準的(de)更新換(huan)代產品(pin)。數(shu)(shu)字直(zhi)(zhi)流(liu)電(dian)具(ju)有數(shu)(shu)字萬用表同樣簡(jian)便(bian)、快速、醒目的(de)特點,還保(bao)持(chi)了惠斯(si)登(deng)電(dian)橋(qiao)(qiao)(qiao)準確、穩定、可靠的(de)優點。工(gong)作原理:當(dang)檢流(liu)計G中無電(dian)流(liu)流(liu)過時,電(dian)橋(qiao)(qiao)(qiao)達(da)到平(ping)衡(heng)。QJ84數(shu)(shu)字直(zhi)(zhi)流(liu)電(dian)橋(qiao)(qiao)(qiao)平(ping)衡(heng)的(de)條件(jian)為R1R4=R2R3設R1=Rx為被測電(dian)阻(zu)(zu)(zu),則Rx=(R2/R4)R3測量(liang)時,先將(jiang)比臂(bei)(bei)調(diao)到一定比值,然后再調(diao)節(jie)較臂(bei)(bei)直(zhi)(zhi)到電(dian)橋(qiao)(qiao)(qiao)平(ping)衡(heng)為止(zhi)。常用的(de)單臂(bei)(bei)直(zhi)(zhi)流(liu)電(dian)橋(qiao)(qiao)(qiao)用來測量(liang)約1W到0.1MW...

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