Re: Secondary

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Bob, John,

Bob, I fully agree with John's comments. My coil runs better with more
turns on the
primary, and thus, the secondary must have more turns to accomodate the same Cp
values. I ran everywhere between 5 and 13 turns at different times on this
coil due
to my abililty to vary Cp into 3 linear working capacitances on the fly
(.02, .04,
.06uF) as well as increasing the secondary turns at times. Increasing turns
on the
secondary always caused a better performing coil for all 3 C values I've
used, and
sparklength has always been better. The mechanics of wire size vs benifits
of higher
turn primarys is something to consider. My next coil ( to be built soon since I
ruined BC1 due to stupidity) will be wound to accomodate a primary that
will tap
between 15 and 20 turns. In my "design mind", the secondary is a bi-product
of the
primary/gap losses which appear to be reduced with greater inductance (more
turns).

Bart A.

Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<FutureT-at-aol-dot-com>
>
> In a message dated 5/14/01 1:49:09 PM Eastern Daylight Time, tesla-at-pupman-dot-com
> writes:
>
> > Original poster: "SIMMS, F R. (JSC-EV4) (LM) by way of Terry Fritz
> <twftesla-at-
> > uswest-dot-net>" <f.r.simms1-at-jsc.nasa.gov>
> >
> >  The Tesla is a surge generator and not a common transformer. That is why
> you
> >  need the lowest resistance you can get for the secondary to have the
> highest
> >  Q and therefore the highest voltage. Few turns with heavy wire.
> >
> >  Bob
>
> Bob,
>
> Although this is a popular view, using few turns of heavy secondary
> wire will demand that few turns of primary wire is used also.  Such
> a design increases the spark gap losses, and in my work, reduced
> the spark length.
>
>    http://hometown.aol-dot-com/futuret/page3.html
>
> John Freau