MAX931比较器电路
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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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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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