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簡(jiǎn)單講述電感線圈的檢??/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
id="cntrHits">-</span></span><span>發(fā)表時(shí)間??015-08-22 14:07:00</span>
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<p> 在選擇和使??a href="http://m.linhang.com.cn/product/product-0001,0016.shtml">電感線圈</a>時(shí)，首先要想到線圈的檢查測(cè)量，而后去判斷線圈的質(zhì)量好壞和優(yōu)劣。欲準(zhǔn)確檢測(cè)電感線圈的電感量和品質(zhì)因數(shù)Q，一般均需要專門儀器，而且測(cè)試方法較為復(fù)雜。在實(shí)際工作中，一般不進(jìn)行這種檢測(cè)，僅進(jìn)行線圈的通斷檢查和Q值的大小判斷?？上壤萌f(wàn)用表電阻檔測(cè)量線圈的直流電阻，再與原確定的阻值或標(biāo)稱阻值相比較，如果所測(cè)阻值比原確定阻值或標(biāo)稱阻值增大許多，甚至指針不動(dòng)(阻值趨向無(wú)窮大X，可判斷線圈斷線;若所測(cè)阻值極小，則判定是嚴(yán)重短路萬(wàn)果局部短路是很難比較出來(lái)人這兩種情況出現(xiàn)，可以判定此線圈是壞的，不能用。如果檢測(cè)電阻與原確定的或標(biāo)稱阻值相差不大，可判定此線圈是好的。此種情況，我們就可以根據(jù)以下幾種情況，去判斷線圈的質(zhì)量即Q值的大小。線圈的電感量相同時(shí)，其直流電阻越小，Q值越??所用導(dǎo)線的直徑越大，其Q值越??若采用多股線繞制時(shí)，導(dǎo)線的股數(shù)越多，Q值越??線圈骨架(或鐵??所用材料的損耗越小，其Q值越高。例如，高硅硅鋼片做鐵芯時(shí)，其Q值較用普通硅鋼片做鐵芯時(shí)??線圈分布電容和漏磁越小，其Q值越高。例如，蜂房式繞法的線圈，其Q值較平繞時(shí)為高，比亂繞時(shí) 也高;線圈無(wú)屏蔽罩，安裝位置周圍無(wú)金屬構(gòu)件時(shí)，其Q值較高，相反，則Q值較低。屏蔽罩或金屬構(gòu)件離線圈越近，其Q值降低越嚴(yán)重;對(duì)有磁芯的高頻線圈，??Q值較天磁芯時(shí)為高;磁芯的損耗越小，其Q值也越高??br />
在電源濾波器中使用的低頻阻流圈，其Q值大小并不太重要，而電感量L的大小卻對(duì)濾波效果影響較大。要注意，低頻阻流圈在使用中，多通過(guò)較大??流，為防止磁飽和，其鐵芯要求順插，使其具有較大氣隙。為防止線圈與鐵芯發(fā)生擊穿現(xiàn)象，二者之間的絕緣應(yīng)符合要求。所以，在使用前還應(yīng)進(jìn)行線圈與鐵芯之??絕緣電阻的檢測(cè)。具體方法與變壓器絕緣電阻的檢測(cè)方法相??可參閱變壓器的檢????br />
對(duì)于高頻線圈電感量L由于測(cè)試起來(lái)更為麻煩，一般都根據(jù)在電路使用效果適當(dāng)調(diào)整，以確定其電感量是否合適??br />
對(duì)于多個(gè)繞組的線圈，還要用萬(wàn)用表檢測(cè)各繞組之間線圈是否短路;對(duì)于具有鐵芯和金屬屏蔽罩的線圈，要測(cè)量其繞組與鐵芯或金屬屏蔽罩之間是否短路??/p>
<p> 以上就是為什么要對(duì)電感線圈進(jìn)行檢查測(cè)量了，你學(xué)會(huì)了嗎？如果你想訂制高頻變壓器，你可以通過(guò)<a href="http://m.linhang.com.cn">共模電感生產(chǎn)廠家</a>（http://www.chenfeipower.ocm）進(jìn)行咨??/p>
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