RE: Winding primary

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

With the low coupling all of the energy does not transfer from the pri
to the sec.  Does the amount that does not transfer just feed back into
the cap as the magnetic field collapses?  So the low coupling doesn't
equate to losses?  Instead of losses it just transfers the energy
slower?


I am just checking I think this is true but wanted to confirm.

Thanx


Luke Galyan
Bluu-at-cox-dot-net
http://members.cox-dot-net/bluu

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Tuesday, March 09, 2004 8:45 PM
To: tesla-at-pupman-dot-com
Subject: RE: Winding primary

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Luke,

Simply think of "loss" as how "hot" it gets.  The streamers are hot and
account for about 70% of the energy of a coil.  The gap is hot and
accounts
for the other about 30%.  The leads of the caps are pretty darn cold
;-)))  and they account for a little more than 0% percent loss....

Cheers,

          Terry


At 09:34 PM 3/9/2004, you wrote:
 >Two strings in parallel (such as what I am building) still seems there
 >is little cross sectional area.  Are you saying that because the leads
 >are so short they offer almost no resistance like say the ohm per 1000
 >feet of wire charts would indicate?
 >
 >thanx
 >
 >Luke Galyan
 >Bluu-at-cox-dot-net
 >http://members.cox-dot-net/bluu
 >
 >-----Original Message-----
 >From: Tesla list [mailto:tesla-at-pupman-dot-com]
 >Sent: Tuesday, March 09, 2004 7:22 PM
 >To: tesla-at-pupman-dot-com
 >Subject: RE: Winding primary
 >
 >Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 >Hi Luke,
 >
 >The key is those leads are very short and normally in parallel.  The
 >loss
 >from the skinny leads is trivial.  They do make those caps with big
 >strap
 >leads, but the cost is stunning for the special order...
 >
 >Cheers,
 >
 >          Terry
 >
 >At 07:48 PM 3/9/2004, you wrote:
 > >On the note of not needing a big honkin primary coil.....
 > >I was starting on building my MMC the other day and it hit me that we
 > >talk about all this high power and current in the tank circuit and
use
 >a
 > >heavy gauge for the primary when in reality as far as wire size goes
 >the
 > >weak link seems to be the leads coming from the caps in the MMC.
They
 > >are so small compared to what is suggested for the primary.
 > >
 > >
 > >Luke Galyan
 > >Bluu-at-cox-dot-net
 > >http://members.cox-dot-net/bluu
 > >
 > >-----Original Message-----
 > >From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > >Sent: Tuesday, March 09, 2004 5:56 PM
 > >To: tesla-at-pupman-dot-com
 > >Subject: Re: Winding primary
 > >
 > >Original poster: "Antonio Carlos M. de Queiroz"
<acmq-at-compuland-dot-com.br>
 > >
 > >Tesla list wrote:
 > >  >
 > >  > Original poster: Gregory Hunter <ghunter31014-at-yahoo-dot-com>
 > >
 > >  >... Finally, if
 > >  > the first primary looks like a nightmare, discard the
 > >  > Cu tube and try again. You're only out $12 or
 > >  > so--chicken feed in this cash-intensive hobby!
 > >
 > >And note that unless your coil is a really big thing, there is no
 > >technical reason to use tubing for the coil. Any reasonably thick
 > >wire is more than enough. All my primaries were made with #18
 > >solid wire (Ok, a 5 kV x30 mA NST doesn't give a lot of power).
 > >http://www.coe.ufrj.br/~acmq/tesla/tefpprim.jpg
 > >Not a work of art, but cheap and works.
 > >
 > >Antonio Carlos M. de Queiroz