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id="pr3mjyzo" class="text pull-left">文章詳情</span> </div> <div id="pr3mjyzo" class="phx-panel"> <div class="pr3mjyzo" id="app_52253022_style" class="hide"> </div> <div id="pr3mjyzo" class="appWrapper" id="app_52253022" role="draggable" data-type="app" data-appid="datumInfo" data-config="" data-state="true"> <div id="pr3mjyzo" class="appMask"></div> <div id="pr3mjyzo" class="appContent"> <div id="pr3mjyzo" class="datum_info"> <h1 class="title">QJ44型攜帶式直流雙臂電橋</h1> <div id="pr3mjyzo" class="bgcolor_01"> <div id="pr3mjyzo" class="bgcolor_sum"> <div id="pr3mjyzo" class="left">日期：2024-11-18 18:47</div> <div id="pr3mjyzo" class="right">瀏覽次數(shù)：279</div> </div> <div id="pr3mjyzo" class="bgcolor_sum01"> 摘要：上?？档请姎饪萍加邢薰?電力技術(shù) </div> </div> <div id="pr3mjyzo" class="content"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:8.925pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:29.04pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">QJ44型攜帶式直流雙臂電橋，內(nèi)附晶體管檢流計(jì)和能內(nèi)附工作電源。適合于工礦企業(yè)、實(shí)驗(yàn)室或車間現(xiàn)場，對直流以低值電阻作準(zhǔn)確測量。如用來測量金屬導(dǎo)體的導(dǎo)電系數(shù)，接觸電阻、電動機(jī)、變壓器繞組的電阻值，以及其它各類直流低值電阻。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:30.84pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">二、電橋主要性能</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:17.955pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:18.84pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、準(zhǔn)確度等級：0.2級。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:39.36pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、使用溫度范圍：5℃～45℃。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:39.36pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、測量范圍：0.00001～11</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">，基本量限0.01～11</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:8.925pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:30.96pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">4、準(zhǔn)確度：電橋在環(huán)境溫度為20℃</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">10℃，相對濕度小于80%的條件下，在基本量限內(nèi)，允許測量誤差為：</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:8.925pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:30.96pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">?</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">△</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">?</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">≤а% Rmax（允許誤差為滑線讀數(shù)刻度4小格）。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:39.24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">а…………………………………準(zhǔn)確度等級（0.2級）</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:39.36pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Rmax…………………………電橋讀數(shù)的滿刻度（</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">）</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:8.925pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:29.04pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">5、內(nèi)附晶體管檢流計(jì)，具有足夠的靈敏度。在基本量限內(nèi)，當(dāng)滑線讀數(shù)盤刻度變化4小格，檢流計(jì)指針偏離零位不小于1格。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:8.925pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:29.04pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">6、電橋的工作電源為1.5V～2V（內(nèi)附電源為1.5V1號手電筒電池4節(jié)并聯(lián)），晶體管檢流計(jì)工作電源為6F22、9V（2節(jié)并聯(lián)）。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:36pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">7、儀器外形尺寸：300×255×15</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;letter-spacing:1.1pt;">0mm</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:36pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">8、儀器重量：約4.5Kg。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:27pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">三、線路和和結(jié)構(gòu)</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:24.045pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:17pt;text-indent:12pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、QJ44雙臂電橋面板位置圖</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> <img alt="" src="http://y1.yzimgs.com/ComFolder/486823/201202/%E5%9B%BE%E7%89%871(1).png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(1) 電橋外接工作電源接線柱 (2) 檢流計(jì)靈敏度調(diào)節(jié)旋鈕；</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(3) 晶體管檢流計(jì)工作電源開關(guān) (4) 滑線讀數(shù)盤；</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(5) 步進(jìn)讀數(shù)開關(guān) (6) 檢流計(jì)按鈕開關(guān)；</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(7) 電橋工作電源按鈕開關(guān) (8) 被測電阻電流端接線柱 </span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(9) 量程因素讀數(shù)開關(guān) (10) 被測電阻電位端接線柱</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(11) 檢流計(jì)電氣調(diào)零旋鈕 (12) 被測電阻電流端接線柱</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:6pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">(13) 檢流計(jì)指示表頭</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、電橋線路： </span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> <img alt="" src="http://y1.yzimgs.com/ComFolder/486823/201202/%E5%9B%BE%E7%89%872.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:20.52pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">四、使用方法</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、在電池盒內(nèi)，裝入1.5V1號手電筒電池4~6節(jié)并聯(lián)使用和2節(jié)6F22、9V并聯(lián)使用，此時(shí)電橋就能正常工作。如用外接直流電源1.5~2V時(shí)，電池盒內(nèi)的1.5V電池，應(yīng)預(yù)先全部取出。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、“B</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">”開關(guān)扳到通位置，等穩(wěn)定后（約5分鐘），調(diào)節(jié)檢流計(jì)指針在零位。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、靈敏度旋鈕放在*低位置。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">4、將被測電阻，按四端連接法，接在電橋相應(yīng)的C</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、P</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、P</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">2</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、C</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">2</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、的接線柱上。如下圖所示，AB之間為被測電阻。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;margin-left:31.5pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;text-indent:-31.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> <img alt="" width="261" height="103" src="http://y1.yzimgs.com/ComFolder/486823/201202/%E5%9B%BE%E7%89%873.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">5、估計(jì)被測電阻值大小，選擇適當(dāng)倍率位置，先按“G”按鈕，再按“B”按鈕，調(diào)節(jié)步進(jìn)讀數(shù)和滑線讀數(shù)，使檢流計(jì)指針在零位上。如發(fā)現(xiàn)檢流計(jì)靈敏度不夠，應(yīng)增加其靈敏度，移動滑線盤4小格，檢流計(jì)指針偏離零位約1格，就能滿足測量要求。在改變靈敏度時(shí)，會引起檢流計(jì)指針偏離零位，在測量之前，隨時(shí)都可以調(diào)節(jié)檢流計(jì)零位。被測電阻按下式計(jì)算：</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">被測電阻值=倍率讀數(shù)×（步進(jìn)讀數(shù)+滑線讀數(shù)）</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">被測電阻范圍與倍率位置選擇按下表：</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <table style="box-sizing:border-box;border-spacing:0px;background-color:#FFFFFF;table-layout:inherit;font-family:"Microsoft YaHei", Arial, sans-serif;padding:0pt 5.4pt;margin-left:60.6pt;"> <tbody style="box-sizing:border-box;"> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt;border-style:solid;border-color:#000000;width:144pt;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">倍率</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">被測電阻范圍（</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">）</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:144pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">×100</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1.1~11</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:144pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">×10</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">0.11~1.1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:144pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">×1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">0.011~0.11</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:144pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">×0.1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">0.0011~0.011</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;"> <td valign="middle" width="192" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:144pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">×0.01</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="252" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:189pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">0.00001~0.0011</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> </tbody> </table> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">QJ44型晶體管檢流計(jì)簡易修理</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">晶體管檢流計(jì)常見故障有以下幾種：不工作、靈敏度低、調(diào)零調(diào)不到零等等。如果有條件，可以用示波器、毫伏表、訊號發(fā)生器等電子儀器來檢查故障。在這里我們只介紹簡易的檢修方法，供在修理時(shí)參考。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:30pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">一、對分法</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:29.04pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">在修理時(shí)，有些同志感到無從下手，或是無目的地焊這拆那，往往故障未查出，反把好的元件弄壞。用對分法檢查故障，即能避免全</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">面檢查而浪費(fèi)時(shí)間，又能不至無故損壞元件。所謂對分法，即在故障范圍中，選擇一點(diǎn)進(jìn)行檢查，判別故障發(fā)生在此點(diǎn)前，還是在此點(diǎn)后，這樣就能肯定一半，然后在剩下的故障范圍內(nèi)，再找一點(diǎn)進(jìn)行檢查，按此方法檢查下去，就會很快地找到故障所在點(diǎn)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、例如在電源、表頭和訊號輸入均無故障的情況下；晶體管檢流計(jì)不工作。用對分法來檢查故障，在圖1中，選擇(5)點(diǎn)作為檢查點(diǎn)，調(diào)節(jié)W，如果表頭指針相應(yīng)會偏轉(zhuǎn)，則來自振蕩器的訊號能從(6)點(diǎn)（BG</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">3</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">發(fā)射極）輸入而進(jìn)行放大、解調(diào)，可見振蕩器，解調(diào)器的工作正常。而交流放大器是一個(gè)整體，BG</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">2</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">—BG</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">5</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">也不會有問題。顯然故障一下就縮小到調(diào)制器所屬范圍內(nèi)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、如果調(diào)節(jié)W，表頭指針無反應(yīng)，或反應(yīng)不明顯，則問題在調(diào)制以外的回路中，再選(4)點(diǎn)，解調(diào)器輸入端，用一導(dǎo)線，一頭接觸(4)點(diǎn)，另一頭分別與(7)和(8)兩點(diǎn)相接觸，如果表頭指針相應(yīng)打向兩邊，則解調(diào)器和振蕩器工作正常，故障發(fā)生在交流放大器內(nèi)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:30pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、在剩下的振蕩器和解調(diào)器中選擇(9)和(10)兩點(diǎn)，用萬用表交流電壓檔測量以上兩對地之間的交流電壓，若分別約1V和1.5V，表明振蕩器工作正常。*后只需檢查解調(diào)器就是了。檢查解調(diào)器除了檢查電路是否有假焊外，主要判別場效應(yīng)管是否損壞。也可檢查(7)和(8)兩點(diǎn)對地電壓，用萬用表測量時(shí)，須串接一個(gè)5μF以上電容。如果兩點(diǎn)對地電壓很低，或其中一點(diǎn)不正常，則振蕩器可能正常，而調(diào)制或解調(diào)中場效應(yīng)管柵極嚴(yán)重漏電。如果(7)和(8)兩點(diǎn)對地?zé)o電壓，再用直流電壓表測(7)和(8)對地直流電壓，就可查出故障點(diǎn)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">二、也可以用訊號注入法檢查晶體管檢流計(jì)</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">在被修理印刷板上找到圖1所示各對應(yīng)點(diǎn)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、將一手指觸及(1)，另一手指觸及(11)，此時(shí)表頭指針打向一邊，</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">說明直流正電壓能從(1)輸入，(1)以后所有電路均無問題，而檢修(1)以前的線路是十分簡單的。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、如果直流信號輸不進(jìn)，則用交流輸入：將一手指觸及(2)或(3)，另一手指先后觸及(7)和(8)，此時(shí)表頭指針應(yīng)分別打向兩邊。如果觸及(7)和(8)，表頭指針向一個(gè)方向偏轉(zhuǎn)，而另一方向無指示，則問題在解調(diào)器。表頭指針無指示，則問題在交流放大器和解調(diào)器線路中。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:22.08pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">三、電流電壓測量法</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">用萬用表測量晶體管檢流計(jì)總電流約0.8mA（電源電壓在9V時(shí)），也可以測量交流放大器的各點(diǎn)工作電壓和振蕩器輸出電壓來判斷。如果測量數(shù)值與典型數(shù)據(jù)偏差太大，說明線路有問題。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">四、修理注意事項(xiàng)</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、在修理晶體管檢流計(jì)時(shí)，可用以上三種方法來確定故障點(diǎn)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、在焊接3DO2場效應(yīng)管時(shí)，烙鐵應(yīng)很好接地，*好斷電焊接。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、在檢查元件時(shí)，應(yīng)重點(diǎn)檢查場效應(yīng)管是否損壞，電容器容量誤差無關(guān)緊要，而對電容器漏電要求較高，檢測元件方法請參閱有關(guān)資料。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">4、焊接元件時(shí)，應(yīng)使用24W烙鐵，并防止印刷板線條短路和翹起。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">5、晶體管檢流計(jì)原理圖和裝配圖中所標(biāo)晶體管型號僅供參考。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"><img alt="" width="532" height="387" src="http://y1.yzimgs.com/ComFolder/486823/201202/%E5%9B%BE%E7%89%874.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">五、注意事項(xiàng)和維護(hù)保養(yǎng)</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、在測電感電路的直流電阻時(shí)，應(yīng)先按下“B”按鈕，再按下“G”按鈕，斷開時(shí)，應(yīng)先斷開“G”按鈕，后斷開“B”按鈕。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">2、測量0.1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">以下阻值時(shí)，“B”按鈕應(yīng)間歇使用。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、在測量0.1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">以下阻值時(shí)，C</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、P</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、P</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">2</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、C</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">2</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">、接線柱到被測量電阻之間的連接導(dǎo)線電阻為0.005Ω~0.01Ω；測量其它阻值時(shí)，連接導(dǎo)線電阻可不大于0.05</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">Ω</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">4、電橋使用完畢后，“B”與“G”按鈕應(yīng)松開?！癇</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;vertical-align:sub;">1</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">”開關(guān)應(yīng)扳向“斷”位置，避免浪費(fèi)晶體管檢流計(jì)放大工作電源。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">5、如電橋長期擱置不用，應(yīng)將電池取出。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">6、如電橋長期擱置不用，在接觸處可能產(chǎn)生氧化，造成接觸不佳，使接觸良好，再涂上一薄層無酸性凡士林，予以保護(hù)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">7、電橋應(yīng)貯放在環(huán)境溫度+5℃~+45℃，相對濕度小于30%的條件下，室內(nèi)空氣中不應(yīng)含有能腐蝕儀器的氣體和有害雜質(zhì)。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">8、儀器應(yīng)保持清潔，并避免直接曝曬和劇烈震動。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">9、儀器在使用中，如發(fā)現(xiàn)檢流計(jì)靈敏度顯著下降，可能因電池壽命完畢引起，因更換新的電池。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">10、在用戶遵守技術(shù)條件所規(guī)定的使用、運(yùn)輸及儲藏的條件下，從交貨之日起一年內(nèi)，因制造質(zhì)量不佳而發(fā)生損壞或不能正常</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">工作時(shí)，制造廠應(yīng)免費(fèi)為用戶修理產(chǎn)品，如無法修好時(shí)，則應(yīng)免費(fèi)給用戶更換部件。</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">六、儀器成套性</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:42pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">隨同產(chǎn)品供應(yīng)的文件有：</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:48pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">1、使用說明書 </span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"> 2、產(chǎn)品合格證 </span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:48pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">3、裝箱單</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;">七、技術(shù)服務(wù)</span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Microsoft YaHei", Arial, sans-serif;background-color:#FFFFFF;line-height:16pt;text-indent:24pt;"> 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