Coil Inductor Wiring - diyAudio
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Old 12th November 2009, 05:09 AM   #1
diyAudio Member
Join Date: Sep 2008
Default Coil Inductor Wiring

This may be the dumbest question for you guys but here goes.

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

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Old 12th November 2009, 08:31 AM   #2
godfrey is offline godfrey  South Africa
diyAudio Member
Join Date: Nov 2009
Location: Cape Town
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.
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Old 12th November 2009, 10:19 AM   #3
diyAudio Member
Join Date: Sep 2008
Thanks. It's going on MDF so I'm good for that. But thanks for also bringing that up.
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