Many sensors have a small analog signal that rides on top of a larger dc pedestal. For these circuits (Fig. 1), the signal must be ac coupled and amplified before it’s digitized. The feedback of an ...
All-Pass Filter Phase Shifters – John Dunn, Consultant, Ambertec, P.E., P.C. We're all familiar with low-pass filters, high-pass filters, band-pass filters, band-stop filters and other filter types, ...
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