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RE: Tesla Ground Strap - aluminum??



Subject: 
        RE: Tesla Ground Strap - aluminum??
  Date: 
        Fri, 28 Mar 97 14:19:48 UT
  From: 
        "William Noble" <William_B_Noble-at-msn-dot-com>
    To: 
        "Tesla List" <tesla-at-pupman-dot-com>


I don't understand how the increased resistance of aluminum over copper
could 
be frequency dependent.  It makes sense that with high peak currents,
the 
increased resistance could cause increased voltage drop, but that can be 
compensated for by using a larger ocnductor.  I know that airplanes,
which are 
made of aluminum, carry some pretty large currents through the skin
during a 
lightning strike, and they are also the source of the ground for the
onboard 
radars and radios operating both above and below the frequencies
suggested 
here for tesla coils - can you elaborate on this frequency dependency of 
aluminum???

-----Original Message-----
From:   Tesla List 
Sent:   Thursday, March 27, 1997 9:44 PM
To:     tesla-at-poodle.pupman-dot-com
Subject:        Re: Tesla Ground Strap

Subject: 
        Re: Tesla Ground Strap
  Date: 
        Fri, 28 Mar 1997 09:18:46 -0700
  From: 
        "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
    To: 
        "Tesla List" <tesla-at-pupman-dot-com>


To: Chuck Curran

Not a good idea to use aluminum.  The Tesla secondary requires a very,
very
good ground.  Aluminum is not a good conductor (relative to copper) at
the
high frequencies employed by Tesla oscillators.  I know it costs more
but
consider the effect a less effective ground may have on your secondary
coil
-- like burning it up!  Save your aluminum buss for the 60 HZ currents.

Consider copper again unless you are on a very very tight budget and
never
use aluminum for a primary.  

DR.RESONANCE-at-next-wave-dot-net