视频LED显示屏的电磁干扰问题
EMI Problem of Video LED Display Screen
摘要 LED显示屏的应用领域已遍及交通、证券、电信、广告宣传等领域,随之而来的电磁干扰问题也很突出。通过介绍视频LED显示屏的工作原理,分析其主要的电磁干扰因素,提出了一些有效的整改措施,并列举了部分整改成功的实例。
关键词 视频LED显示屏;传导;辐射;抑制
Abstract The LED display screens have been used in many areas, such as traffic,
negotiable securities, telecommunication, advertisement drumbeating and so on.
However, the EMI problems which have been brought about should also be paid more
attention to.By introducing the working principle of the video LED display screen and
analyzing the main EMI factor of the video LED display screen,some effective measures
for rectifying above are put forward and some successful debug examples are
enumerated.
Keywords video LED display screen;conduction;radiation;suppression