Re: magnetically quenched gaps

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Ed... you mean, of course, the field was half a Tesla, right??  Granted, I
find the Gauss a more useful unit (in terms of fields I work with), but, as
long as we can argue about SI units, we might as well use the namesake one
for the list....

>
> In my experience Edmund is the very highest possible priced outfit
> around, particularly for magnets.  Try wondermagnets or All
> Electronics.  The old magnetron magnets were indeed almost 100 mm
> diameter, but the newer ones are much smaller.  Remember, you have to
> work over quite a large air gap so you'll need an efficient magnetic
> circuit and a number of magnets in series to get enough of a field
> across the gap.  The old arc transmitters used giant electromagnets for
> the purpose, and ran at field strengths of as much as 5000 gauss!
>
> Ed
>