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提高磁環(huán)線圈的品質(zhì)因數(shù)有什么方法？</h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
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<p> <a href="http://m.linhang.com.cn/product/product-0001,0016.shtml">電感線圈</a>目前廣泛應(yīng)用在各行各業(yè)，那么在制作的時(shí)候，我們應(yīng)該怎么樣提高他的品質(zhì)呢?首先要明確品質(zhì)因素的定義，電路在諧振時(shí)容抗等于感抗，所以電容和電感上兩端的電壓有效值必然相等，電容上的電壓有效值，<img width="173" height="41" src="/UploadFiles/FCK/圖片1(1).png" alt="" /> 品質(zhì)因素<img width="67" height="41" src="/UploadFiles/FCK/圖片2(1).png" alt="" />，這里是電路的總電流??br />
所以，對于品質(zhì)因素的測量方法，首先，我們需要連接一個(gè)RCL電路，阻??img width="251" height="45" src="/UploadFiles/FCK/圖片3(1).png" alt="" />，上式電阻R是復(fù)數(shù)的實(shí)部，感抗與容抗之差是復(fù)數(shù)的虛部，虛部我們稱之為電抗用X表示, ω是外加信號(hào)的角頻率。調(diào)節(jié)交流信號(hào)發(fā)射源的頻率，使其X=0此時(shí)感抗和容抗相互抵消了。此時(shí)只需根據(jù)品質(zhì)因素的定義，測量出電容上的電壓和總電壓，即可得到品質(zhì)因素??img width="52" height="41" src="/UploadFiles/FCK/圖片4(1).png" alt="" /><br />
從上面分析可見，電路的品質(zhì)因素越高，電感或電容上的電壓比外加電壓越高??br />
<br />
<a href="http://m.linhang.com.cn">晨飛電子</a>技術(shù)人員表示，有如下辦法提高品質(zhì)因數(shù)：<br />
提高線圈Q值所采取的措施如??<br />
①根據(jù)工作頻率選擇繞制線圈的導(dǎo)線。低頻段工作的電感線圈應(yīng)采用漆包線等帶絕緣的導(dǎo)線繞制。對于工作頻率在幾十千赫至兩兆赫之間的電感線圈，應(yīng)采用多股絕緣導(dǎo)線繞制，以增加導(dǎo)體有效截面積，減少集膚效應(yīng)的影響，可使Q值提??0%-40%。對于工作頻率高??MHz的電感線圈，應(yīng)采用單股粗導(dǎo)線繞制，導(dǎo)線的直徑一般在0.3-1.5mm之間??br />
②選用優(yōu)質(zhì)骨架，減少介質(zhì)損耗。通常對于要求損耗小、工作頻率高的電感線圈，應(yīng)選用高頻陶瓷、聚四氟乙烯、聚苯乙烯等高頻介質(zhì)材料做骨架。對于超高頻工作的電感線圈，可用無骨架方式繞制??br />
③選用帶有磁心的電感線圈。電感線圈中帶有磁心時(shí)，可使線圈圈數(shù)及其電阻大大減少，有利于Q值的提高??br />
④合理選擇屏蔽罩的尺寸。線圈加屏蔽罩后，會(huì)增加線圈的損耗，降低Q值。因此，屏蔽罩的尺寸不宜過大和過小。一般來說，屏蔽罩直徑與線圈直徑之比??.6-2.5為宜，這樣可使Q值降低小??0%??br />
以上就是如何提高磁環(huán)線圈的品質(zhì)方法了，你學(xué)會(huì)了嗎？在這里，小編向你推薦一篇簡述電感線圈的作用（http://m.linhang.com.cn/Article/dianganxianquandezuo_1.html），如果想了解更多關(guān)于這方面的知識(shí)。你也可以在線咨詢??br />
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