摘要
电磁干扰是电子产品一个不容忽视的问题,在设计时就应该采取措施,良好的设计将减少设计时间和产品成本。从国家标准化组织对电磁干扰的要求出发,分析了数字视盘机产生电磁干扰的三个主要原因,由此有针对性的从开关电源、音频/视频输出和PCB电路板三个方面展开讨论,设计分析了抑制电磁干扰的几种方法,并通过了EMI测试。
The electromagnetic interference is an important problem of electronic products, some measures should be adopted while designing,good design can reduce design time and products cost. From the request of international organization for standardization to the electromagnetic interference, three main reasons of electromagnetic interference for DVD digital video disc are analysed. Discussing 3 aspects from switched mode power supplies,audio/video output and PCB printed circuit board. A few methods of repressing the electromagnetic interference,and EMI test are given.
出处
《现代电子技术》
2009年第24期210-212,共3页
Modern Electronics Technique
关键词
数字视盘机
电磁干扰
开关电源
音频/视频输出
PCB板
digital video disc
electromagnetic interference
switched mode power supplies
audio/video output
PCB printed circuit board
