Re: Battery bias directly to grid



Maynard, later Lord, Keynes, was a director of the Ballet Lambert. One
day the company's manager came to him and said it was suggested that
the dancers decide the billing order themselves. Would he permit it?
Keynes looked the man straight in the eyes and said, "Only if you have
first called for an ambulance."

Stick around, Bruce. We can do with a quality engineer with patience
and a sense of humour. Learn to enjoy being horrified at much of what
we do; if you permit your blood pressure to rise you will not last
long.

Andre Jute.

bruce seifried wrote:
> In article <43560898.A0E3655F@xxxxxxxxxxxxxxxxxx>,
> Patrick Turner <info@xxxxxxxxxxxxxxxxxx> wrote:
>
> >snip<
>
>
> > >
> > > Aha... apparently we *are* talking about different cicuits.
> > >
> > > Until it was changed several days ago, I had been referencing the T39
> > > schematic on this page:
> > >
> > > http://members.lycos.co.uk/fiultra/T39-KISS-300B-Ultrafi-crct.jpg
> > >
> > > I was never able to view the other schematic due to unknown browser
> > > demons, but its description sounded like that of the T39 input biasing
> > > arrangement, which I must say was bizarre, but easily fixable (...and I
> > > happen to believe that a good quality capacitor makes a better capacitor
> > > than a battery).
> > >
> > > Carry on...
> > >
> > > -bruce seifried
> >
> > Both of Andre's circuits which use battery bias either in the grid or cathode
> > circuit
> > are NOT prone to switching transients when the gain is changed.
> >
> > Patrick Turner.
>
> >snip<
>
>
>
> goddamn, Patrick, you are one stubborn bloke. Please pay attention.
>
> There are at least *three* versions being discussed, not two:
>
> 1. batteries in the cathode circuit.
> 2. batteries *in series* with the grid.
> 3. batteries *in parallel* with the grid (grid leak position).
>
> Circuit number three is what I have been talking about. The schematic
> was locate at the link I referenced above, until a few days ago, when it
> was redrawn to show the batteries in the cathode circuit. OK?
>
> I will send you a copy of said schematic if you need to see it.
>
> Can we move on now?
>
> -bruce seifried

.



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