MAX931比较器电路
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.
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.
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