LC resonance with high Q factor, Inductor with non magnetic core

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SUMMARY

The discussion centers on achieving LC resonance with a high Q factor using an inductor with a non-magnetic core and an air gap. It concludes that while it is theoretically possible to design an LC circuit with a Q factor above 20, significant eddy current heating in the solid metal core will likely prevent achieving a high Q factor in practice. The active oscillator element must compensate for energy losses due to these eddy currents, which complicates the design. Ultimately, the feasibility of high Q resonance is contingent on specific values of capacitance and frequency.

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TL;DR
Lc resonance with high Q factor. Inductor with non magnetic core and air gap
Consider Inductor with air gap and solid metal core made from material with relative magnetic permeability 1 regardless of temperature (such as copper or aluminium).
There is Air gap between coil and metal core

IMG-46115e6ae36f891ba72366ded3739868-V.jpg
Please Also consider Eddy currents in the solid metal core.
The Inductor is connected with capacitor in

Series LC circuit

Parallel LC circuit

Is it possible under certain values of frequency and capacitance to obtain lc resonance with high q factor?
 
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StoyanNikolov said:
TL;DR Summary: Lc resonance with high Q factor. Inductor with non magnetic core and air gap

Is it possible under certain values of frequency and capacitance to obtain lc resonance with high q factor?
No. The eddy current heating of the core will be significant, and so will preclude a high Q. But then your definition of high Q may be different from mine.

An LC tank circuit could be driven to oscillate at its resonant frequency, but the active oscillator element would need to make up the energy lost to the eddy currents in the core.
 
Baluncore said:
No. The eddy current heating of the core will be significant, and so will preclude a high Q. But then your definition of high Q may be different from mine.

An LC tank circuit could be driven to oscillate at its resonant frequency, but the active oscillator element would need to make up the energy lost to the eddy currents in the core.
Let's say Is it possible with certain values of Capacitance and Frequency to obtain Resonance with Q above 20 for the given LC Circuit?
 
StoyanNikolov said:
Let's say Is it possible with certain values of Capacitance and Frequency to obtain Resonance with Q above 20 for the given LC Circuit?
Why would you say that?
You could design it to have a Q of 20.
What are the dimensions of the coil and the core?
Why is Q relevant?
 
Baluncore said:
Why would you say that?
You could design it to have a Q of 20.
What are the dimensions of the coil and the core?
Why is Q relevant?
With current Inductor with Solid Metal Core and the Eddy currents. Is it possible to have Q above 20. Inductor(with solid metal core) , Values of Capacitance of the Capacitor (Switched in Parallel or in Series) and input Frequency
 
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