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The importance of Phase in the frequency plots.

The Lowpass filter for this discussion.

We have been talking about the phase shift when creating frequency plots, but it has not been given a lot of importance. Other than power-factor it really has not affected us that much. We have been mostly interested in the gain plot. That is just about to change.

Continue reading The importance of Phase in the frequency plots.

Parallel Resonance Circuit and decibels.

Parallel LC “tank” circuit.

In the post “Series RLC Resonance – The effect of Changing R“, I talked about the Quality factor, Q. Q was defined as: Q= 2*π * energy stored per cycle / energy dissipated per cycle. Just like I did in that post we will take a look at what happens

Continue reading Parallel Resonance Circuit and decibels.