Terrific answer.... are you sure the DC resistance is based only on the cop=
per wire ?.....
Gus
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> On Mar 23, 2013, at 3:22 PM, Brooke Clarke wrote:
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> Hi Gus:
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> Impedance is composed of real and imaginary parts.  So headphone impedanc=
e is the vector addition of the DC resistance=20
> and the imaginary inductive reactance.
> If the headphones are the electromagnetic type, such as the Trimm headpho=
nes:
> http://www.prc68.com/I/Images/Trimm.jpg
> then the wire size and length determine the DC resistance and the magneti=
c core and number of turns determines the=20
> inductive reactance.
> http://www.prc68.com/I/Z.shtml
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> For use with a crystal radio high Z headphones work much better than low =
Z types.
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> Have Fun,
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> Brooke Clarke, N6GCe
> http://www.PRC68.com
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> piclist-request@mit.edu wrote:
>> [EE]  How is headphone impedance created ?
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