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font-size: 16px;">滑線變阻器使用方法</span></strong><span style="font-family: 宋體, SimSun; font-size: 16px;">：</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">1、變阻器單臺(tái)產(chǎn)品在電路中可作串、并聯(lián)使用，也可多臺(tái)并機(jī)使用。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">2、滑線變阻器的結(jié)構(gòu)和符號(hào)如圖所示，電阻絲的兩頭分別接在瓷管兩端的A、B接線柱上，A、B之間的電阻即為總電阻。滑動(dòng)頭D可沿金屬桿滑動(dòng)，與電阻絲接觸良好，改變其位置就可以改變AC（或BC）電阻。額定電流和總電阻等參數(shù)均在銘牌上標(biāo)明。在電路中有兩種接法：</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">①限流接法：將變阻器的一個(gè)固定端和滑動(dòng)端接入電路，由于電阻可變，從而使電路中的電流發(fā)生變化。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">②分壓接法：將變阻器的兩個(gè)固定端分別與電源的兩極相連，由滑動(dòng)端和任一固定端連接到電路。由于電流通過(guò)變阻器的全部電阻絲，故A、B之間任意兩點(diǎn)都有電勢(shì)差。當(dāng)滑動(dòng)頭移動(dòng)時(shí)，就改變了電路的輸入電壓。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img58.chem17.com/9/20241101/638660456925460941291.png" title="ae39bc7b-3992-4bdd-b86f-2a84b739eae6.png" alt="ae39bc7b-3992-4bdd-b86f-2a84b739eae6.png"/></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"></span><br/></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">注意：限流接法中，變阻器的滑動(dòng)頭應(yīng)放在電阻最大的位置；分壓接法中，變阻器的滑動(dòng)頭應(yīng)放在分壓最小的位置</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> <br/></span></p><p style="text-align: center"><img src="https://img41.chem17.com/9/20241101/638660455647460906778.png" alt="422235fa-7dbb-4a04-b79d-d07913064ac8.png" style="width:800px;"/></p><p><strong><span style="font-family: 宋體, SimSun; font-size: 16px;">滑線變阻器注意事項(xiàng)及維護(hù)：</span></strong></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">１、請(qǐng)嚴(yán)格保證變阻器在額定電壓及電流值下使用。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">２、變阻器是易發(fā)熱元件，安裝時(shí)不宜靠近不能受熱的物體。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">３、變阻器配有M6的安裝孔及接地端子，保證使用時(shí)良好的接地。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">４、變阻器使用如發(fā)生接觸不良時(shí)，可在電刷接觸面移動(dòng)的康銅絲表面，除５、去氧化絕緣層，即可消除其現(xiàn)象。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">６、變阻器經(jīng)長(zhǎng)時(shí)間的連續(xù)使用后，如發(fā)現(xiàn)滑片失去壓力時(shí)，需拆下接觸系統(tǒng)，把接觸橋修正（矯直），重新裝上后，使電刷貼平于電阻絲表面，方可正常使用。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">7、安裝場(chǎng)所的空氣中不應(yīng)含化學(xué)腐蝕氣體和蒸氣，無(wú)爆炸性塵埃。</span></p><p><br/></p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-3850747.html">SDDL-500A大電流發(fā)生系統(tǒng)概述</a></p> <p>下一篇：<a href="/Article-3849301.html">ZX54實(shí)驗(yàn)室直流電阻箱簡(jiǎn)介</a></p> </div> <div id="iqaqewgi6e" class="clear"></div> </div> </div> <div id="iqaqewgi6e" class="n-9"> <div id="iqaqewgi6e" class="c-right"> <div id="iqaqewgi6e" class="c-1 r-pro"> <div id="iqaqewgi6e" class="c-left"> <div 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