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,请说是在泵阀网上看到的,谢谢!
IC694ACC311 端子
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。
碳达峰、碳中和”是中国发展的重大战略决策,而工业园区在其中扮演着极为重要的落地角色。此次白皮书的发布,可以为中国园区在绿色低碳发展方面提供可参照的衡量指标和宝贵经验。未来,我们期待能有更多的园区参与到绿色低碳发展中来。该白皮书将持续更新,根据更多园区绿色低碳发展的状态和进步来完善评估体系,继续识别和鼓励在此方面有突出成就的园区,共同助力中国实现‘双碳’目标。
西门子艾闻达中国区总经理
西门子中国研究院院长
朱骁洵
在全球应对气候危机的背景下,园区作为中国产业和经济发展的重要承载形式,在提供了大量基础设施和公共服务的同时,也是主要的碳排放源头之一。因此,科学评估园区的低碳发展水平成为了“双碳”战略下一个重要话题。此次发布的白皮书建立并使用了中国园区低碳发展进程评估框架(PDI),从表现力、发展力和影响力三大纬度对32家园区的低碳发展进程和成效进行了全方位的调研和评估。通过调研可以发现,园区在低碳发展上普遍面临难以精准科学降碳、驱动力不足、缺乏整体政策和创新抓手、对绿色金融创新工具的应用缺乏等挑战。
IC694ACC311 端子
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,Fuji(富士),Festo(费斯托),Phoenix(菲尼克斯),Koyo(光洋),Yokogawa(横河),
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SMC,Sanyo(三洋),Delta(台达),Turck(图尔克),Sick(施克),Sharp(夏普),Eaton(伊顿)
,bently (本特利)