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    1. 淺談電源連接器濾波技術的發展

      2016-07-04  來自: 上海上恒電子有限公司 瀏覽次數:2451

      上海上恒電子有限公司是國內著名的電源濾波器制造商, 公司是集設計、生產、銷售于一體的實業公司.總部坐落于上海華盛國際商務花園.公司依靠優質的產品、完善的服務與諸多知名公司保持著良好的合作。如GE(蘇州)、志高空調、霍尼韋爾、上海郵通等。

        隨著電源連接器濾波技術的發展,在抑制電磁干擾方面,濾波技術具有高度的有效性,特別是對于開關電源的EMI信號,能夠發揮良好的干擾傳導、干擾輻射的作用。

        前者主要是指在兩條導線之間傳輸的干擾信號,屬于對稱性干擾,其顯著特點是頻率低、干擾幅度小、生成的電磁干擾小;后者主要是指在導線和機殼(土地)之間傳輸的干擾信號,屬于非對稱性干擾,其顯著特點是頻率高、干擾幅度大、生成的電磁干擾大,同時也能夠借助導線形成輻射,擴大輻射源。

        綜合上述分析,我們可以通過將EMI信號控制在EMI相關標準規定的極限電平之下的方式來實現削弱傳導干擾的目的。除了對干擾源進行有效抑制之外,在開關電源的輸入電路和輸出電路當中安裝EMI濾波器也是非常抑制電磁干擾的重要途徑。電子設備的常見工作頻率通常在10MHz-50MHz之間。EMC的很多標準規定的的傳導干擾電平極限值為10MHz,對于開關電源的高頻段EMI信號,只要所選擇的網絡結構相對簡單的EMI濾波器或者是去耦電路相對簡單的EMI濾波器,不僅能夠實現降低高頻共模電流強度的目的,還能夠滿足EMC規定的濾波效果。

        濾波電連接器的設計原理便是依據上述原理。用電設備和電源之間、各種用電設備之間存在著相互干擾的問題,而濾波電連接器是降低干擾的理想選擇。由于濾波電連接器的每一個插針上面都有一個低通濾波器,所以每一個插針均能夠有效過濾共模電流。另外,濾波電連接器也具有很好的兼容性,它的接口尺寸和外形大小與普通的電連接器相同,所以,它們之間能夠進行直接的替換。

        此外,使用濾波電源接器還具有很好的經濟性,這主要是因為,濾波電源連接器僅僅需要安裝在屏蔽機箱的端口即可,在其消除電纜中的干擾電流之后,導線不會再感應到干擾信號的干擾,所以比屏蔽電纜具有更加穩定的性能;濾波電連接器對于電纜端接的要求不高,所以完全不用使用高質量屏蔽電纜,進一步體現出其較好的經濟性。


      關鍵詞: 電源連接器濾波技術的發展           

      上海上恒電子有限公司,專營 單相濾波器 三相三線濾波器 三相四線濾波器 直流濾波器 軍品濾波器 電抗器 正弦波濾波器 等業務,有意向的客戶請咨詢我們,聯系電話:021-52845231.

      備案號:滬ICP備16046008號

      CopyRight ? 版權所有: 上海上恒電子有限公司 技術支持:魔站 網站地圖 XML


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