I have noticed there are different Inductance formula's for a various types of air coils & there design, single layer spiral, flat wound spiral, multilayer etc.(adsbygoogle = window.adsbygoogle || []).push({});

My question is for the design of Jumble wound --- Random wound air core coils:

What is the Inductance formula for a Jumble wound---Random wound air coil & the necessary dimension points needed to be taken for the caculation.

Some say you use the single layer spiral air coil formula, others say use the multilayer formula & some say neither apply?

Is there a site that i can go to to look this up or can anybody help me out?

Thank You

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# Air Coil Inductance Formula

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