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Re: Copper Banding?
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- Subject: Re: Copper Banding?
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 01 Mar 2005 17:23:05 -0700
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- Resent-date: Tue, 1 Mar 2005 17:23:33 -0700 (MST)
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Original poster: Kurt Schraner <k.schraner@xxxxxxxxxxx>
Tesla list schrieb:
Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>
<snip>
The reason is that a flat spiral made with tape acts as a stack of coupled
filamental coils. If the coupling were unitary, the inductance
would be the same of a single filament. But as the coupling between
distant filaments is smaller than one, the inductance decreases.
Consider for example two parallel filamental coils with inductance L.
If they are at small distance, they act as a single coil with inductance
L. If they are far apart, the coupling between them is insignificant,
and the total inductance falls to L/2.
Antonio Carlos M. de Queiroz
Thanks Antonio, for the nice and convincing explanation. My guessing about
influence of interturn capacitance is of no value, and should be forgotten.
Kurt Schraner