Re: Electrical Properties of Brass

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "robert & june heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Dr Moray  ( a tesla associat) used 1/8 x 1" and 1/8 x 2" brass strip
primaries an all his coils
   Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Fri, 18 Apr 2003 22:13:43 -0600
 > To: tesla-at-pupman-dot-com
 > Subject: Electrical Properties of Brass
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Fri, 18 Apr 2003 22:22:18 -0600
 >
 > Original poster: "Jeremy Scott by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <supertux1-at-yahoo-dot-com>
 >
 > Hi!
 >
 > I was wondering if anyone has any experience with
 > building primaries out of brass instead of copper?
 > I want to use brass since I'm worried about copper
 > oxidizing over time.
 >
 > I have a design in mind that is going to use
 > brass strips for all connections in the tank
 > circuit. (Including the primary)
 >
 > The brass strips I have in mind are approximately
 > .016" thick by 2" wide.
 >
 >> From calculations I have done with JavaTC,
 > the tank current at gap conduction is going
 > to be approximately 800 Amps.
 >
 > (15KV/120mA NST .03 uf LTR primary cap)
 > (154kHz resonant frequency)
 >
 > I am concerned that the brass strips I've got
 > are too thin to handle this current load.
 > Unfortunately, anything thicker is tough to work
 > with and bend into the proper shapes I require.
 > (Doubling up the thin strips is an option but
 > I don't want to do it if i don't have to.)
 >
 > On the otherhand, since the tank current will be
 > oscillating at RF frequencies, skin-effect tells me
 > that the thickness isn't as much of an issue as the
 > actual surface area.
 >
 > I guess the real question is, how far does a charge
 > of 800A penetrate into brass at 154kHz ?
 >
 >