[R-390] Variacs and solas: additional thoughts.
Barry
n4buq at aol.com
Mon May 2 11:44:16 EDT 2005
I have an ICL installed and the 3TF7 still glows noticeably brighter at
startup. While I'm sure the ICL is softening things at startup, the tube
still has to come up to speed over a greater time than the ICL takes to warm
up.
Barry - N4BUQ
<snip>
> >If one were to bring up the line voltage slowly using a variac, then this
> >might cushion the initial voltage/current surge into the venerable 3TF7.
>
> It may well do that. But what about a more or less fail safe
slow-bring-up
> device you can install and forget: the inrush current limiter? That
sounds
> like an ideal solution to the whole thing.
>
> Roy
>
>
> - Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
> 7130 Panorama Drive, Derwood MD 20855
> Home: 301-330-8828 Cell 301-928-7794
> Work: Voice: 301-975-3254, Fax: 301-948-6213
> roy.morgan at nist.gov --
More information about the R-390
mailing list