电力线载波技术分为两类，一种是用于负载控制、远程抄表和家电自动化的低速电力线载波通信。

There are two kinds of Power Line Carrier technology. One is used for Load Control, Remote Meter Reading and Home Automation, which is a short rate application.

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根据教室电器节能系统的需要，介绍了基于电力线载波芯片LM 1893的电力线载波电路的设计。

A power line communication system based on the special carrier chip LM1893 is introduced in the paper.

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