140G-J6F3-D20电源
140G-J6F3-D20电源
产品价格:¥7890(人民币)
  • 规格:140G-J6F3-D20
  • 发货地:福建厦门市
  • 品牌:
  • 最小起订量:1个
  • 诚信商家
    会员级别:钻石会员
    认证类型:企业认证
    企业证件:通过认证

    商铺名称:厦门盈亦自动化科技有限公司

    联系人:刘莉(小姐)

    联系手机:

    固定电话:

    企业邮箱:3001679289@qq.com

    联系地址:厦门市集美区杏林禹州中央海岸一期5号楼923室

    邮编:361022

    联系我时,请说是在新型建材网上看到的,谢谢!

    商品详情

      140G-J6F3-D20电源


        在无任何原理图状况下要对一块比较陌生的电路板进行维修,以往的所谓“经验”就难有作为,尽管硬件功底深厚的人对维修充满信心,但如果方法不当,工作起来照样事倍功半。那么,怎样做才能提高维修效呢?根据我公司进口设备维修中心统计出来的资料,应遵循以下几个步骤、按顺序有条不紊的进行。 
      方法一:先看后量 
      使用工具:万用表、放大镜 
      当手拿一块待修的电路板,良好的习惯首先是应对其进行目测,必要时还要借助放大镜,看什么呢? 
      主要看: 
      1、是否有断线; 
      2、分力元件如电阻、电解电容、电感、二极管、三极管等时候存在断开现象; 
      3、电路板上的印制板连接线是否存在断裂、粘连等; 
      4、是否有人修过?动过哪些元器件?是否存在虚焊、漏焊、插反等操作方面的失误; 
      在确定了被修无上述状况后,首先用万用表测量电路板电源和地之间的阻值,通常电路板的阻值都在70-80?以上,若阻值太小,才几个或十几个欧姆,说明电路板上有元器件被击穿或部分击穿,就必须采取措施将被击穿的元器件找出来。具体办法是给被修板供电,用手去摸电路板上各器件的 
      温度,烫手的讲师重点怀疑对象。若阻值正常,用万用表测量板上的阻、二极管、三极管、场效应管、拨段开关等分力元件,其目的就是首先要确保测量过的元件是正常的,我们的理由是,能用万用表解决的问题,就不要把它复杂化。 



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      深圳市市委、市政府党组成员郑红波在大会上指出,深圳高度重视5G发展,坚持高强度投入、高标准建设,着力打造5G网络能效优质的建设标杆、5G技术先进的创新高地、5G应用融合的先行典范、5G产业链完备的世界级产业集聚区。接下来,深圳将继续以先行示范的责任与担当,进一步推动5G技术创新与产业融合双向赋能。

        大会还举办了第五届“绽放杯”5G应用征集大赛颁奖典礼,并发布了《5G应用创新发展白皮书(2022年)》、《5G增强技术研发试验测试工作进展》、《5G-Advanced白皮书——场景需求与关键技术》、《5G-Advanced通感融合网络架构研究报告》等行业重磅成果,全方位、多角度地展现了5G最新研究成果。

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