I'm a bit confused on the wording of the problem. 19.3b: "Sketch a Bode diagram of the parallel LC parallel tank resonant."
Isn't this the same as H(s)?
But H(s) = (sL||1/sC||Re)/(sL||1/sC||Re) = 1 given that Zo(s)=Zin(s).
If that's the case, what's the point of plotting H(s)? Or is the problem asking to plot the bode for sL||1/sC? Thanks.
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2 comments:
Hi Khoa,
You are right that H(s) = 1 for this resonant tank. However, H(s) is not the same as the tank impedance. The problem is asking to plot the parallel combination of L and C. See the textbook for algebra-on-the-graph technique.
Thank you. That was helpful.
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