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-   -   Coil Inductor Wiring (http://www.diyaudio.com/forums/construction-tips/154823-coil-inductor-wiring.html)

TooManyToys 12th November 2009 05:09 AM

Coil Inductor Wiring
 
This may be the dumbest question for you guys but here goes. :spin:

Can a lead wire connecting to the inner terminal of a air core foil inductor pass through the coil center?

I'm mounting the coil flat to a board and would like to run a wire up through the center through a hole in the board. The examples I've looked at have the wire crossing the top of the inductor, but I've not seen any through the center. And I can't find any comments that it would be detrimental to the sound.

An example, not like you guys have never seen one :rolleyes:

http://www.parts-express.com/images/.../255-644_L.jpg

godfrey 12th November 2009 08:31 AM

No problem passing the connecting wire for the inner terminal through the hole in the center.

BUT: if you mount the coil flat on a copper-clad board, there will be a bit of stray capacitance between every turn of the coil and the copper board. That will have an effect at very high (radio) frequencies.

TooManyToys 12th November 2009 10:19 AM

Thanks. It's going on MDF so I'm good for that. But thanks for also bringing that up.


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