介绍智能充电控制芯片MAX713 ，并以其为核心，设计了一台为便携式仪器仪表供电的不间断电源装置。

The chip MAX713 for intelligent charge control is introduced in this paper, and with which, a DC UPS for portable instruments is designed.

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智能型充电吕设有过充、短路保护及充电显示装置。

Intellectual charger is also installed with over-charged, over-used and short circuit protections and charging display apparatus.

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