微机测控系统中功率接口与抗干扰技术

Power adaptor and antijamming tech in computer monitoring system

微机测控系统通常需要通过功率接口控制高电压、大电流的电气设备。一个好的功率接口可使微机测控系统不受干扰稳定工作。本文介绍了适用于不同情况下的功率接口电路。此接口电路既有低电压、小电流到高电压、大电流的转换作用,同时又考虑了抗电磁能力。探讨了抑制感性负载噪声的方法。最后阐述了微机测控系统中应用广泛的晶闸管变流装置的干扰与抗干扰措施。

The power adaptor controls high voltage and strong current in a computer monitoring system.A good adaptor,being able to avoid interference,enables the monitoring system to work steadily.This paper introduces a power adaptor circuit suitable for different conditions,which is designed to possess antijamming and transform the high voltage to the low one, and strong current to the weak one. Methods of controlling inductive load noise,and measures of resisting interference causd by the widely used thyristor converter in the system are also stated.