我們的質量方針：以客戶需求為宗(zong)旨，以科技(ji)創新為動力，以嚴格管理為保證，以水(shui)平為目標，為廣大客戶提供滿意的產品和服務。

我們的價值觀：團結和睦、志(zhi)同道合、誠實守(shou)信(xin)、尊崇創新、嚴(yan)謹守(shou)紀、

一、用途

本多值電(dian)阻器(qi)供直流電(dian)路中調節阻值之用，具有較低的(de)殘余電(dian)阻，為一般(ban)實驗室常用儀器(qi)，適合學校、工礦、科研(yan)和計量(liang)單位作電(dian)測(ce)量(liang)和其(qi)它實驗之用。

本(ben)型電阻器適合在溫度為(wei)5～35℃、相對濕度≤80％的環境(jing)下使用（保證準確度溫度為(wei)20±1.5℃）。

二、ZX85A多值電阻器主要技術指標

三、ZX85A多值電阻器結構

本型電(dian)阻(zu)(zu)(zu)器采(cai)用(yong)特殊變換開(kai)關(guan)，每組電(dian)阻(zu)(zu)(zu)按2、2、2、2、2、2排列，通過(guo)開(kai)關(guan)變換組合(he)出0～10檔位。內部電(dian)阻(zu)(zu)(zu)采(cai)用(yong)高穩(wen)(wen)定錳銅(tong)合(he)金(jin)線于瓷(ci)管上作無感式繞制，并經(jing)過(guo)嚴格(ge)的人工(gong)老化處理、長期考(kao)核(he)、篩(shai)選(xuan)，因此具有很穩(wen)(wen)定的電(dian)阻(zu)(zu)(zu)值。

四(si)、使用注意(yi)事(shi)項

1、使(shi)用(yong)電(dian)阻器時，先將各旋鈕來回旋轉數次，以使(shi)接觸穩定可靠。

2、電阻器在使用中(zhong)，功(gong)率絕不(bu)能超過各檔所(suo)規定的(de)參考(kao)值，否則(ze)會導致電阻阻值變化甚至燒壞。

3、電(dian)阻(zu)器所給出的阻(zu)值中，不包含電(dian)阻(zu)器的殘余(yu)電(dian)阻(zu)，使用(yong)和檢定時，應扣除殘余(yu)電(dian)阻(zu)。

4、本電(dian)阻(zu)器(qi)應存放在空氣溫度(du)為5～45℃，相(xiang)對濕(shi)度(du)≤80％，不(bu)(bu)含(han)有腐蝕(shi)儀器(qi)的氣體和(he)有害雜(za)質的室內，且儀器(qi)不(bu)(bu)受(shou)日光的直接照(zhao)射。

五、附(fu)則

1、在用(yong)戶遵守保管(guan)和使用(yong)規(gui)則下，從制造廠發貨日起12個月內(nei)，如產品質量出(chu)現質量問題或不能正常工作時，本(ben)廠無償(chang)地(di)為用(yong)戶修(xiu)理。

2、隨產品一起供應的(de)文件(jian)：

a、裝箱單；

b、使用說明書；

c、產品合格證。

用(yong)電(dian)(dian)(dian)(dian)阻(zu)材料制(zhi)成(cheng)的(de)(de)(de)、有一定結構形式、能(neng)(neng)在電(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)起限制(zhi)電(dian)(dian)(dian)(dian)流(liu)(liu)通過作用(yong)的(de)(de)(de)二端電(dian)(dian)(dian)(dian)子(zi)(zi)元(yuan)件(jian)。阻(zu)值不(bu)能(neng)(neng)改變的(de)(de)(de)稱為固 定電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)。阻(zu)值可變的(de)(de)(de)稱為電(dian)(dian)(dian)(dian)位器(qi)(qi)(qi)或可變電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)。理想的(de)(de)(de)電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)是(shi)線性的(de)(de)(de)，即通過電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)的(de)(de)(de)瞬時(shi)電(dian)(dian)(dian)(dian)流(liu)(liu)與(yu)(yu)外加(jia)瞬時(shi)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)成(cheng)正比。一些特殊電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)，如熱敏(min)電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)、壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)和(he)(he)敏(min)感元(yuan)件(jian)，其電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)與(yu)(yu)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)關系是(shi)非線性的(de)(de)(de)。電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)是(shi)電(dian)(dian)(dian)(dian)子(zi)(zi)電(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)應用(yong)數量多的(de)(de)(de)元(yuan)件(jian)，通常按功率和(he)(he)阻(zu)值形成(cheng)不(bu)同系列(lie)，供電(dian)(dian)(dian)(dian)路(lu)設計者(zhe)選用(yong)。 電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)在電(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)主要(yao)(yao)用(yong)來(lai)調(diao)節和(he)(he)穩(wen)定電(dian)(dian)(dian)(dian)流(liu)(liu)與(yu)(yu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，可作為分(fen)流(liu)(liu)器(qi)(qi)(qi)和(he)(he)分(fen)壓(ya)(ya)(ya)器(qi)(qi)(qi)，也(ye)可作電(dian)(dian)(dian)(dian)路(lu)匹配(pei)負載。根(gen)據電(dian)(dian)(dian)(dian)路(lu)要(yao)(yao)求,還可用(yong)于放大電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)負反饋或正反饋、電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)-電(dian)(dian)(dian)(dian)流(liu)(liu)轉換、輸入過載時(shi)的(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)或電(dian)(dian)(dian)(dian)流(liu)(liu)保(bao)護元(yuan)件(jian)，又(you)可組成(cheng)RC電(dian)(dian)(dian)(dian)路(lu)作為振蕩(dang)、濾波、旁路(lu)、微(wei)分(fen)、積(ji)分(fen)和(he)(he)時(shi)間常數元(yuan)件(jian)等。