一种差模电源滤波器的测试分析

Testing analysis of a kind of differential-mode power filters

电源滤波器作为一种在电子设备、测量仪表等各个方面应用广泛的滤波器,目前尚没有详细规范出台。本文结合国军标GJB1518-92的主要技术规范的要求,介绍了差模电源滤波器的一种测试方法。并采用网络等效原理,有针对性地对测试中影响滤波器插入损耗参数的因素进行了深入地理论分析,提出了测试过程中几个主要影响器件测试参数的注意事项。分析结果与实际测试数据基本吻合,达到了器件在实验项目进行前后可能出现的问题进行测试分析的目的。

Power filters, as a kind of filters applied to electronic equipments, meters and so on, there is no particular specification for power filters presently. This text introduces a method of differential-mode power filters testing, combined with the heavy demands of national military specification GJB 1518-92 and some other basic specifications. The author uses network equivalent criterion in theory, analyzes the factors affect loss insert pertinently. Moreover, the author advances several main factors affect testing. That the analysis result is the same with the practical testing data basically achieves the purpose of analyzing the factors possibly happened before or after the test.