摘要
基于小型开关电源会产生电磁干扰污染电网,同时它们又容易受到外部电磁环境的影响,不能精确地工作。我们采用了滤波、屏蔽、接地等技术,使小开关电源的EMI被控制在EMC标准规定的极限下,使它们能够良好地工作又不至于污染电网。特别在文中对小开关电源的电路进行了改进,使这类电源能够有效地吸收和抑制干扰。大量的实践证明本文中采用的方案经济可靠地解决了小开关电源的抗干扰问题,不但能够改善小开关电源的性能,还降低了小开关电源的故障率,使小型开关电源的使用范围更加广泛。
Due to the small switching power supply will produce electromagnetic interference and pollutes grid, at the same time, they are also vulnerable to the influence of the external electromagnetic environment, so that they can not work accurately. We use filtering, shielding, grounding, and other technologies, so that the small switching power supply EMI is controlled in EMC standards prescribed and not pollutes grid. Particularly small switching power supply circuit in this article has been improved to effectively absorb and suppress interference. A lot of practice proved the program used in this article economically and reliably solutes small switching power supply interference, not only can improve the performance of small switching power supply, but also reduce the failure rate of small switching power supply, so that the small switching power supply is more extensively used.
出处
《电子设计工程》
2013年第5期149-152,共4页
Electronic Design Engineering
