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</script> <script type="text/javascript"> var OBJ_TITLE = "电感线圈铁氧体磁珠在电路中的应用"; var OBJ_ID = "543"; var MARK = "news"; var ARR_AD_MARK = ["news_detail_1", "news_detail_2", "news_detail_3"]; var SID = "0001,0002,0006"; //权限ID var AUTHORITY_ID = ""; </script> <script src="/JS/Cls_jsPage.js"></script> <!--content:start--> <div class="content"> <div class="plc2"> 当前位置ï¼?a href="/">首页</a> » <a href="/news/">资讯中心</a> » <a href="/News/News-0001,0002,0006.shtml"> 晨飞资讯</a> » <a href="/Article/dianganxianquantieya_1.html">电感线圈铁氧体磁珠在电路中的应用</a></div> <div class="list4nr"> <div class="n_info_con" id="printableview"> <h3> 电感线圈铁氧体磁珠在电路中的应用</h3> <div class="info_con_tit"> <div class="info_con_tit"> <div class="n_tit"> <span>文章出处ï¼?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电子有限公å?/a></a></span><span>网责任编辑:<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者:<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气ï¼?span id="cntrHits">-</span></span><span>发表时间ï¼?015-12-22 13:57:00</span> <div class="newchang"> <!-- JiaThis Button BEGIN --> <div id="ckepop"> <a href="http://www.jiathis.com/share/?uid=899792" class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到:</a> <a class="jiathis_button_qzone">QQ空间</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">腾讯微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">网易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script> <!-- JiaThis Button END --> </div> </div> </div> </div> <div id="cntrBody"> <p><span style="font-size: 14px">  磁珠的主要原料为铁氧体,铁氧体是一种立方晶格结构的亚铁磁性材料,颜色为灰黑色。铁氧体磁珠在电路中使用能够增加高频损耗而又不引入直流损耗,而且体积小、便于安装在区间的引线或者导线上,对äº?MHz以上的噪声信号抑制效果很明显,因此可用作高频电路的去耦、滤波以及寄生振荡的抑制等。低阻抗的供电回路、谐振电路、丙类功率放大器以及可控硅开关电路等,使用铁氧体磁珠进行滤波都是十分有效的。铁氧体磁珠一般可以分为电阻性和电感性两类,使用时可以根据需要选取。单个磁珠的阻抗一般为十至几百欧姆,应用时如果一个衰减量不够时可以用多个磁珠串联使用,但是通常三个以上时效果就不会再明显增加了ã€?/span></p> <p> </p> <p><span style="font-size: 14px">  因为任何传输线都不可避免的存在着引线电阻、引线电感和杂散电容,所以,一个标准的脉冲信号在经过较长传输线后,极易产生上冲及振铃现象。在脉冲前沿上升时间相同的条件下,引线电感越大,上冲及振铃现象就越严重,杂散电容越大,则使波形的上升时间越长,而引线电阻的增加,将使脉冲的振幅减小。在实际电路中,可以利用串联电阻的方法来减小和抑制上冲及振铃ã€?/span></p> <p> </p> <p><span style="font-size: 14px">  铁氧体磁珠得到了广泛的应用,尤其是应用于印制电路板、电源线和数据线上。如在印制板的电源线入口端加上铁氧体磁珠,就可以滤除高频干扰。铁氧体磁环或磁珠专用于抑制ä¿?号线、电源线上的高频干扰和尖峰干扰,它也具有吸收静电放电脉冲干扰的能力。两个元件的数值大小与磁珠的长度成正比,而且磁珠的长度对抑制效果有明显影响,磁珠长度越长抑制效果越好ã€?/span></p> </div> <div class="apage" id="showfenye"> <!--资讯分页:start--> <script type="text/javascript"> var pagecont=1; 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