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Polarity Identification for Meter

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maheshkuruganti

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polarity identification

I am designing a Voltmeter Meter Circuit.I wanted to know if there is a way by which I could read the Polarity of the Incoming signal without affecting measurement.I can simply obtain the absolute value from a Precision rectifier so I need a method of Finding Polarity.I don't want to use a DC Bias as it would affect my resolution.
 

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