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介绍了一种简单而又易于与微机接口的步进电机驱动电源，它具有反应快的特点以及手控与微机控制的功能，是焊缝自动跟踪系统简易可行的驱动电源．
A simple but easy to interface with the microcomputer stepper motor drive power supply, which has the characteristics of fast response and manual and computer control functions, automatic welding seam tracking system is simple and feasible drive power.