[Boatanchors] A couple more questions

[Chris Howard]

On Wed, 2005-12-21 at 20:06 -0700, Chris Howard wrote:
> Thanks for your help Vic.
> 
> > 
> > The filaments must be lit and the filament transformer center tap path 
> > to ground continuous in order for you to see grid current (I hope the 
> > plate supply is off!).
> > 
> 
> The plate supply is off.  The center tap of the PA filament transformer
> makes its way through the grid current meter, back to the center tap of
> the bias supply transformer.  But I don't think it goes to ground.  I'll
> have to investigate that.  I'm beginning to suspect there is a
> relationship between the two problems!
> 

I should have said:  The center tap of the PA filament transformer
goes, via the grid current meter, back to the center tap of the 5v 
filament windings on the bias supply.  As far as I know, it does not
connect to chassis ground on either end or along the way.