[Fwd: Magnetic Field in a Flat Spiral]

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

Original poster: "David Sharpe by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sccr4us-at-erols-dot-com>

David Sharpe wrote:

> Ed
> Not doubting may have to go to NIB or SaCo to get
> BH product high enough to do the job.  However if
> I mount in a 'C' magnetic armature (1), and shape pole
> faces to focus what magnetic flux we got (2), we may be
> surprised at the available flux density.  The magnetron
> ring magnets are cheap, compared to a rare earth, and
> magnetic quenching was captured on a video tape at
> Richards nearly 8 years ago, using a WWII Alnico
> magnetic radar magnet.  These modern ferrite magnets
> are at least 3X to 5X stronger then first (and second)
> generation alnico products.  Worth giving it a whack
> and see what falls out of it.
>
> Regards
> Dave Sharpe, TCBOR
> Chesterfield, VA. USA
>
> Tesla list wrote:
>
> > Original poster: "Ed Phillips by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
> >
> > Tesla list wrote:
> > >
> > > Original poster: "David Sharpe by way of Terry Fritz
> > <twftesla-at-qwest-dot-net>" <sccr4us-at-erols-dot-com>
> > >
> > > Ed
> > >
> > > I'm in fact working on upgrading my 6 point biphase super series

> > > ASRSG with ceramic magnets out of a microwave magnetron.
> > > Part of ongoing IDR adventure.
> > >
> > > Magnetic quench assist on HV electrodes that receive 100%
> > > duty cycle, other electrodes are 50%DC.  Will advise list of
> > > outcomes, and provide JPGs of before and after modifications.
> > >
> > > Regards
> > > Dave Sharpe, TCBOR
> > > Chesterfield, VA. USA
> >
> >         I was really thinking of "straight gaps", but the RSG
application is
> > interesting and hope you'll share your results with us before too
long.
> > Not sure you can get a useful field from those magnetron magnets,
but
> > worth a try.  They just don't begin to have the maximum flux
density or
> > magnetizing force of the rare earth magnets.
> >
> > Ed