this post was submitted on 19 Aug 2023
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Transformer question (discuss.tchncs.de)
submitted 1 year ago by Rolive@discuss.tchncs.de to c/askelectronics@discuss.tchncs.de
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In a transformer, why are both coils apart from each other? Wouldn't make more sense to have the ferrite core (tube shape), wind the primary coil around that and then wind the secondary coil on top of the primary? So that the magnetic fields are as close to each other as possible?

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[–] thericcer@reddthat.com 2 points 1 year ago

This is how a toroidal transformer is built. https://en.wikipedia.org/wiki/Toroidal_inductors_and_transformers