By testing the harmonic content of colour TV set, this article analyses the causes of the too high harmonic content, presents the relationship between harmonic content and power factor, and also offers the measures for reducing the harmonic content.

• 通过对彩色电视机谐波含量的测试，分析了谐波产生的原因，推导出了谐波含量与功率因数的关系，并提出了降低谐波含量的措施。