电子式三相电缺相检测报警器

摘要

The paper expounds the working principle of Electronic Annunciator for Meansuring Lacking Phase in Alternating Current,which is designned by himself of the paper writer.And introduces a thought of one direction parallel connection of three power supplies, which is necessary for natural work of the measuring and alarming part of the instrument in the case of lacking some phase.%本文对作者实际工作中自行设计的一种三相电缺相检测报警器原理进行了阐述，并介绍了缺相情况下检测报警部分正常工作所必须的三电压单向并联供电思路。