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Re: [TCML] Inductance of elliptical coil?
On 6/30/11 7:19 AM, jhowson4@xxxxxxxxxxx wrote:
formula that i just dug out of Google found behind this link
http://books.google.com/books?id=K3KHi9lIltsC&pg=PR5&lpg=PR5&dq=inductance+of+an+ellipse&source=bl&ots=dMWlK2rqSi&sig=4jGQZWEos9dr_l5cvN5qCEicqb0&hl=en&ei=A4QMTrTcF-He0QHYy7C2Dg&sa=X&oi=book_result&ct=result&resnum=4&ved=0CCgQ6AEwAzgK#v=onepage&q=ellipse&f=false
L=0.002*l*[log*((2*l)/(A+B))-0.05685] the log is base e
hope that link actually works, and the formula is helpful to you, i believe thatyou multiply by n turns for a multi turn coil.
Thanks,
John "Jay" Howson IV
that would be for a conductor of elliptical cross section, not an
elliptical coil (i.e. the wire is elliptical, as opposed to circular or
square)
In general, the inductance of a coil with N turns is N^2 times the
inductance of a single turn.
Actually, that's only if the turns are all in the same physical
location, which is impossible, but if the turns are tightly packed, it's
pretty close, if the wire diameter is small compared to the size of the
coil. This is NOT generally true for coils used in Tesla coils.
or, if the turns are on a magnetic core (because then the flux is
throughly linked)
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