Coil Inductor Wiring

TooManyToys · 12th November 2009, 06:09 AM

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

godfrey · 12th November 2009, 09:31 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, 11:19 AM

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

12th November 2009, 06:09 AM	#1
TooManyToys diyAudio Member Join Date: Sep 2008	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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12th November 2009, 09:31 AM	#2
godfrey 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.

12th November 2009, 11:19 AM	#3
TooManyToys 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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