12 Volt LED Lead Acid Battery Meter
12 Volt LED Lead Acid Battery MeterIn the circuit, a cloister voltage comparator (LM339) is acclimated as a simple bar blueprint beat to announce the allegation action of a 12 volt, advance acerbic battery. A 5 volt advertence voltage is affiliated to anniversary of the (+) inputs of the four comparators and the (-) inputs are affiliated to alternating credibility forth a voltage divider. The
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