数字用户环路倍增设备远供电源系统的设计

The Design of Remote Power Feeding System in Digital Subscriber Loop Multigain Equipment

介绍了数字用户环路倍增设备中的远供电源系统的组成，论述了局端和用户开关电源设计的几个主要问题。

The form of the remote power feeding system in the digital subscriber loop(DSL) multigain equipment is introduced.Several important problems in the designs of switching power supplies in both central office terminal and remote terminal are discussed.The relationship between the distance of remote power feeding and thd loop circuit resistance is discussed.