On Jul 23, 2006, at 7:28 AM, carl s. wrote:
> All this discussuion about grid fuses and such is very
> interesting !!
> The comment about one man pressuring manufacturers to use the
> *floating grid concept
A floating grid won't get the job done in Class AB2 cathode-driven
because the cathode's electrons must flow through the grid and return
back to the cathode in order for the anode to conduct substantially.
> 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 ??
> the mods certainly wouldn't be difficult , as it just means
> taking out
> all the *junk* from the grid ckt and grounding the grids
> directly .!! Might
> need to lift the fil. center tap for bias purposes also, still no big
> deal.!! BUT , what is the best way to ground the grids?? ( Piece
> of wire?
> copper strap? Direct to chassis at each socket or something else??)
> I have
> an amp here right now that I'm fighting with and wondering if maybe
> there is
> something I'm missing !!
> I appreciated all the comments on my previous posts , and I'm still
> looking for the answer(s).!!! I hope I'm not stirring the pot too
> much !!!
> carl / kz5ca
>
>
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R L MEASURES, AG6K. 805-386-3734
r@somis.org
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