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140G-J6F3-D20電源
140G-J6F3-D20電源
產品價格:¥7890(人民幣)
  • 規格:140G-J6F3-D20
  • 發貨地:福建廈門市
  • 品牌:
  • 最小起訂量:1個
  • 誠信商家
    會員級別:鉆石會員
    認證類型:企業認證
    企業證件:通過認證

    商鋪名稱:廈門盈亦自動化科技有限公司

    聯系人:劉莉(小姐)

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    固定電話:

    企業郵箱:3001679289@qq.com

    聯系地址:廈門市集美區杏林禹州中央海岸一期5號樓923室

    郵編:361022

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    商品詳情

      140G-J6F3-D20電源


        在無任何原理圖狀況下要對一塊比較陌生的電路板進行維修,以往的所謂“經驗”就難有作為,盡管硬件功底深厚的人對維修充滿信心,但如果方法不當,工作起來照樣事倍功半。那么,怎樣做才能提高維修效呢?根據我公司進口設備維修中心統計出來的資料,應遵循以下幾個步驟、按順序有條不紊的進行。 
      方法一:先看后量 
      使用工具:萬用表、放大鏡 
      當手拿一塊待修的電路板,良好的習慣首先是應對其進行目測,必要時還要借助放大鏡,看什么呢? 
      主要看: 
      1、是否有斷線; 
      2、分力元件如電阻、電解電容、電感、二極管、三極管等時候存在斷開現象; 
      3、電路板上的印制板連接線是否存在斷裂、粘連等; 
      4、是否有人修過?動過哪些元器件?是否存在虛焊、漏焊、插反等操作方面的失誤; 
      在確定了被修無上述狀況后,首先用萬用表測量電路板電源和地之間的阻值,通常電路板的阻值都在70-80?以上,若阻值太小,才幾個或十幾個歐姆,說明電路板上有元器件被擊穿或部分擊穿,就必須采取措施將被擊穿的元器件找出來。具體辦法是給被修板供電,用手去摸電路板上各器件的 
      溫度,燙手的講師重點懷疑對象。若阻值正常,用萬用表測量板上的阻、二極管、三極管、場效應管、撥段開關等分力元件,其目的就是首先要確保測量過的元件是正常的,我們的理由是,能用萬用表解決的問題,就不要把它復雜化。 



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      深圳市市委、市政府黨組成員鄭紅波在大會上指出,深圳高度重視5G發展,堅持高強度投入、高標準建設,著力打造5G網絡能效優質的建設標桿、5G技術先進的創新高地、5G應用融合的先行典范、5G產業鏈完備的世界級產業集聚區。接下來,深圳將繼續以先行示范的責任與擔當,進一步推動5G技術創新與產業融合雙向賦能。

        大會還舉辦了第五屆“綻放杯”5G應用征集大賽頒獎典禮,并發布了《5G應用創新發展白皮書(2022年)》、《5G增強技術研發試驗測試工作進展》、《5G-Advanced白皮書——場景需求與關鍵技術》、《5G-Advanced通感融合網絡架構研究報告》等行業重磅成果,全方位、多角度地展現了5G最新研究成果。

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