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Concept explainers
A high-pass filter Consider the LCR circuit shown in the figure.
a. Explain why Kirchhoff’s voltage law for the circuit is
b. Use the tacts that I(t) = Q′(t) and the voltage across the inductor is vout = LI′(t) = LQ″(t) to show that the equation for the charge on the capacitor is
c. Find the transfer function for the equation and compute the gain function.
d. Show that the solution of the
e. Now we must relate vout to Q. Use part (b) to show that vout = –ω2LQ = –ω2H(ω)vin.
f. The quantity of interest is the ratio of the magnitudes of the input and the output. Show that
g. Show that tor
h. Under what conditions, if any, does the ratio in part (f) have a local extremum for ω > 0?
i. Explain why the circuit is called a high-pass filter.
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Chapter D2 Solutions
Student Solutions Manual, Single Variable for Calculus: Early Transcendentals
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCalculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning
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