• I assume that you have a hum or open wire somewhere that makes your comparator act like a multi vibrator around the switching point.

    You would need something like a Schmitt trigger with - configurable - hysteresis. You even may use your comparator with some added components to avoid the 'vibrating' - see https://daycounter.com/Calculators/Compa­rator-Hystereses-Calculator.phtml

    Could you show the setup of the circuitry in a uploaded picture?


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