Audio 4.5Mhz notch filter Circuit Diagram. Component value sensitivityis extremely critical, as are
temperature coefficients and matching of the components. Best
performance is attained when perfectly matched components are used and
when the gain of the amplifier is unity. To illustrate, the quality factor Q is very high as amplifier gain
approaches 1 with all components matched (in fact, theoretically it
approaches «) but decreases to about 12 with the amplifier gain at 08.
Audio 4.5Mhz notch filter Circuit Diagram
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