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  1. osbornera

    Non-uniform noise distribution ruins filter attempt

    I have a differentially coupled DAQ Analog Input collecting data from a current sensing resistor at 500 samples per second. I have a 25HP (VFD) variable frequence drive that is noisy nearby. Dang it! Yes, it's my fault it's so close. I didn't think it would be that noisy. Doh! I drive the...

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