A 12V battery monitor circuit is available on this page.
What can be done to modify that circuit to alarm when voltage goes below 15V ?
http://www.eleccircuit.com/low-voltage-battery-monitor-by-lm339/
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1 Answer
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VR1 adjusts the level at which the comparator trips. So the answer is set VR1 appropriately.
answered Feb 22, 2015 at 16:01