彩色电视机输入电流波形的测试及谐波分析

The Test for Input Current and Analysis and Calculation for Harmonics of colour TV

通过对彩色电视机输入电流的分析, 给出了它的数学表达式. 并用傅里叶级数分析方法, 计算出5个奇次谐波幅值及其输入电流有效值, 呈现出计算结果与实测值很好的一致性. 同时, 指出其大小对电视机功率因数的影响.

By analyzing input current wave form for colour TV, an approximate mathematical formula is given in this paper. And also, five values for odd harmonics and effective values for input current are calculated. The calculated values are consistent with tested result. At the same time, this paper points out the values which influence the power of TV.