Design LC Circuit: Find Capacitor for 2 kHz, 2 mH

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Discussion Overview

The discussion revolves around designing a series-tuned LC circuit with a specified resonant frequency of 2 kHz and an inductor value of 2 mH. Participants are exploring how to determine the appropriate capacitor size needed for this circuit.

Discussion Character

  • Homework-related, Technical explanation

Main Points Raised

  • The original poster (OP) seeks to find the size of the capacitor required for a resonant frequency of 2 kHz with a 2 mH inductor.
  • One participant asks for the equation that relates resonant frequency to inductance and capacitance.
  • Another participant provides the formula for resonant frequency, indicating that it involves the inductance and capacitance, but does not clarify the specific capacitor value needed.
  • A later reply emphasizes the importance of guiding the OP to research and solve the problem independently, rather than providing direct answers.

Areas of Agreement / Disagreement

There is no consensus on the specific capacitor value needed, as participants are focused on guiding the OP rather than providing a definitive answer. The discussion remains unresolved regarding the calculation of the capacitor size.

Contextual Notes

Participants have not explicitly stated all assumptions or provided detailed steps for the calculations involved in finding the capacitor value. The discussion lacks a complete derivation of the necessary equations.

Lhawx
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Homework Statement



I need to design a series-tuned LC circuit with a resonant frequency of 2 kHz and and a 2 mH inductor. I need to know what size capacitor I would need?

Homework Equations



2 kHz * 1000 = 2000 Hertz
2 mH / 1000 = 0.002 Henry


The Attempt at a Solution

 
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what's the equation for the resonant frequency of an LC circuit?
you take it from there.
 
help

w=2.pi.f = 1/ (L.C)^(1/2)...f=resonance frequency
 
partymann said:
w=2.pi.f = 1/ (L.C)^(1/2)...f=resonance frequency
Welcome to the PF forums! I hope you will find our threads useful and informative.

It's great that you know information on a homework problem. However the format in homework discussions is to encourage the OP (original person asking for help), and allow them to research and do as much of their own work as possible, then you can guide them (as a teacher would) in a successful direction. mda is trying to assist the OP by asking a question. You're answering that question does not help Lhawx learn what to do.

When you have a homework question, that 's the time you can state the information you know about the problem.
 

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