Ac power line hum can be removed by using a properly designed Sallen-Key second-order notch filter.
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Q1: Passive filters are built with resistors,capacitors,and op
Q2: Why are some filters designed with a
Q4: Predistortion refers to decreasing the design value
Q5: Having voltage gain,center frequency,and bandwidth all independently
Q6: A low-pass filter passes all frequencies from
Q7: Monotonic means that the stopband has no
Q8: If the damping factor is increased,the resonant
Q9: The bandstop filter is sometimes called a
Q10: An LC filter has an order of
Q11: A filter that shifts the phase of
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