[Amps] Grid Current Advice

[Phil Clements]

> Subject: Re: [Amps] Grid Current Advice
> 
> There is no max grid-I rating.  The max rated grid dissipation is 20w,
> but several experimenters have found this to be somewhat conservative
> -- probably because the grid is made from Mo, which melts at 2617ºC.
> 
> Figuring grid P --- According to "Care and Feeding ... ... ..." ,
> grid-dissipation is approx. the indicated DC grid current multiplied by
> the RMS grid to cathode potential.
> 
> cheers, Keith
> .
> On Aug 15, 2005, at 7:22 PM, Keith Dutson wrote:
> 
> > What is the maximum recommended grid current for a pair of Eimac 3-500G
> > tubes?  Thanks.
> >
> > 73, Keith NM5G

Rich is correct, as usual.
Something typical for a pair of 3-500Z's outputting 1700 watts or so would
be 230 ma or so, or 115 ma per tube.

(((73)))
Phil, K5PC