LC Resonance Inductor solid non-magnetic metal core.

Thread Starter

Stoyan.Nikolov.2Induction

Joined Nov 26, 2023
14
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.

Please also consider Eddy currents in the solid metal core.

Fig 1

The inductor is connected with capacitor in:

  1. Series LC circuit
  2. Parallel LC circuit
Is it possible under certain values of frequency and capacitance to obtain LC resonance with high Q factor?
 

MisterBill2

Joined Jan 23, 2018
18,442
Probably Not, because the conductive core will greatly reduce the energy return because of the circulating current losses. That is why tuning a resonant circuit with a conductive core will always result in a lower "Q" factor.
 

Thread Starter

Stoyan.Nikolov.2Induction

Joined Nov 26, 2023
14
If we increase frequency so the inductive reactance (Xl= 2*Pi*f*L) will increase and hence perhaps it is possible to achieve high Q ?
In case there is air gap between coil and solid metal core (as shown in the picture)
 
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