> Subject: Re: [AMPS] Single supply -Multi-amo help
hi rich, jordan, et al.
> >> Are these amplifiers going to be in simultaneous use?
great question!
> >No they would be run one at a time ...
great answer.
> Then one supply would do.
yep.
> >I see a ckt in QST where they
> >just remove the screen voltage to the unused amps...
>
> . When the normal cutoff bias is applied to the grid, the tubes draw no
> current. The presence or absence of screen voltage matters not.
it's best to "remove" the screen voltage by grounding (or returning
to ground through a low-value resistor) the screen. that is, don't
let it just "float" because it might wander up near anode potential,
and take out the screen bypass capacitor. in fact, murphy pretty
much guarantees that would happen!
73,
George T. Daughters, K6GT
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