[R-390] Blowing B+ fuse

[David Wise]

Won't matter if the SS mod was done according to spec.  The official
instructions add a series resistor to drop the B+ to tube-equivalent levels.
This softens the inrush considerably.
 
Tim's right, the B+ fuses are fast-acting, not slow-blow.  And they were
added after either some radios burned up, or an engineer realized that
they could.  It's a worthwhile upgrade, especially in these latter days
when the components are so far past official lifetime design specs.
 
73,
Dave Wise (SWL in Portland OR)

> I don't recall in your prevous posts whether you have a solid state
> power supply
> or tube rectifiers.  The B+ inrush with the silicon diode modification
> will be huge.
>
> Cheers, Gord VE3EOS
>
> --
>
> Gordon L. Hayward, Ph.D., P.Eng.,
> Associate Professor, Biological Engineering,
> School of Engineering, University of Guelph,
> Guelph, Ontaro, N1G 2W1.