Published:2009-7-17 3:19:00 Author:Jessie | From:SeekIC
Phase-sensitive detector for sinusoidal signals. This circuit measures the magnitude of in-phase or 180°-out-of-phase inputs with the proper polarity, depending on the relationship to the reference with less than 1% error. The op amp shown is a AD741J (courtesy Analog Devices, Inc.).
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