MAX931比较器电路 作者:dolphin 时间:2013-05-13 Figure 1. IC1, the MAX931 comparator, monitors the main supply voltage. It also turns on the backup battery by grounding its negative terminal when the main supply drops below 7.4V. 关键词: 电路 比较 the supply main 加入微信获取电子行业最新资讯搜索微信公众号:电子产品世界或用微信扫描左侧二维码