[Amps] Screen supply for pentode

[R.Measures]

On Jul 17, 2004, at 8:44 PM, Oleg Skydan wrote:

> Hi, All !
>
> I am going to build an amplifier using GU-46 tube. It is glass
> pentode. You know in the tetrodes we need to use a shunt
> regulator to cure the negative screen current problem.
> But is it safe to use a series type regulator for pentodes ?
> I.e. can the screen current be negative (at first sight it can't)?
>
Oleg --  Why can't there be negative screen-I in a pentode?

> All the best,
> Oleg
> 73 de UR3IQO
>
>
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org