电视电缆故障点的确定

根据惠斯通电桥工作原理，采用回路法可以简便快捷地确定电视地下电缆接地、短路故障点的位置。电容法也是一种常用的检查开路的检测方法。这样维修人员可以迅速排除故障，保证电视节目的正常传送。

To Determine Failure Point in Television Cable

According to Wheatstone bridge work principle,using the method of loop circuit can easy and fast check short circuit and grounding point of television cable, capacitance also is one kind of method of check disconnection in common use,so maintenance man can rapidly fix a breakdown,and ensures the normal conveying of television program. Key words:Wheatstone electric bridge;loop circuit;method of capacitancection of virtual library by the example of library and information science virtual library construction.At last,the author points that WINISIS is an ideal tool for the construction of virtual library.