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Power/Alternative Energy  

Precision circuit monitors negative-supply thresholds

Posted: 02 Feb 2011     Print Version  Bookmark and Share

Keywords:MAX971  open-drain comparator  MAX974 

Using an IC (MAX971) that includes an open-drain comparator and a precision 1% voltage reference, this circuit monitors the magnitude of a negative supply voltage and provides a digital warning of fault conditions. To monitor multiple negative voltages, use the MAX974, which includes four comparators.

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