Re: Superconducting tesla coil...

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

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 

Rather than go total superconducting, why not try a simple and cheap test...
Even at LN2 temperatures, copper's resistance is much less than at room
temperature, albeit not superconducting.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, October 02, 2003 5:51 AM
Subject: Re: Superconducting tesla coil...


 > Original poster: The MCP <ejkeever-at-comcast-dot-net>
 >
 > YBCO and BSCCO superconductors both work at liquid nitrogen temperatures.
 >
 > The research team at this link
 > http://www.et.anl.gov/sections/ceramics/research/superconductor.html has
been
 > working with YBCO superconductors that, at liquid nitrogen temperature,
can
 > carry up to 600 amps per square millimeter. I seriously doubt that any
tesla
 > coil generates anything even remotely approaching that amperage. But you
 > never know...
 >
 > At any rate, I was thinking more about using super-fine gauge wire on a
 > gigantic form, putting tens of thousands of turns on it with no resistance
to
 > reduce voltage gain, that using a normal number of turns and counting
solely
 > on the zero resistance. Plus, might all the self-capacitance with no
 > resistance stopping it up reduce the need for a topload?
 >
 > On Wednesday 01 October 2003 03:47 pm, Tesla list wrote:
 >  > Original poster: davep <davep-at-quik-dot-com>
 >  >
 >  > >>>I've seen two messages about this in the archives, from '98 and '95.
I
 >  > >>>was wondering if any progress has been made in this area?
 >  > >>>
 >  > >>>And what kind of improved step-up ratio could you expect in a
 >  > >>>superconducting vs normal coil?
 >  > >>
 >  > >>A superconducting coil, if it could built properly, would probably
 >  > >>give sparks that are about 8 to 10% longer.  No big difference
really.
 >  >
 >  >          ...and require working with liquid nitrogen at best,
 >  >
 >  >          something colder, most likely...
 >  >
 >  >          ...and superconductors lose superconductivity in the
 >  >          presence of large magnetic fields, so there is a limit
 >  >          on currents/powers....
 >  >
 >  >          best
 >  >          dwp
 >  >
 >  >
 >
 >