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Re: Current



Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 4/8/02 1:08:43 AM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

<< 
 So, just a theoretical question here but, if someone made a primary coil out 
 of platinum or gold (besides the heat and melting issues with gold) the 
 output would increase by noticeable amounts due to the less resistance? Has 
 anyone tried this or something similar?
 
 73, Kc0Ion, "Ion-Boy"
  >>

Hi "Ion Boy",

Besides the idea of a multi- thousand $$ primary coil being some-
what impractical for the average coiler, it is my understanding that 
silver is the best conductor. I believe gold lies between copper and 
aluminum in relative conductance, if I remember correctly. I sup-
pose you could build a silver primary and keep your primary mate-
rial cost doen to a few thousand $$ :-) I think the main reason that
many small electronic circuit conductors are gold-palted is that
although gold doesn't have the highest relative conductance, gold
does have about the highest resistance to surface corrosion/ tar-
nishing and this is an important consideration when considering the 
skin effect. I'm not sure about the relative conductance of platinum
but I do know that platinum also has very high resistance to corrosion.
Maybe some of the resident metallurgists could comment further on
this. 

David Rieben