[Amps] grid fuses

[Tom W8JI]

>     All this discussuion about grid fuses and such is very 
> interesting !!
>     The comment about one man pressuring manufacturers to 
> use the
> *floating*
>   grid concept leaves me wondering about all the amps 
> using 3-500"s and/or
> other triodes which were sold in the past years.!! Is it 
> conceivable that I
> could modify a dual 572B amp of known origin and get 
> better stability ??

Carl,

The problem with that is, as Peter points out, the single 
grid lead inside the tube is very thin and very long. This 
severely limits anything we can do outside the tube, since 
that connection is a very small part of overall grid lead 
impedance.

73 Tom