ORIGINAL MESSAGE: (may be snipped)
On Thu, 28 Nov 2013 18:08:19 -0700, K5PRO wrote:
>My point being, a stiff shunt R across screen grid is a good idea, not
>only from the standpoint of keeping the screen always terminated during
>switching, but also for circuit stability. I have done it both with and
>without the R, but these days I prefer having the shunt R there, and
>burn up some screen power from the supply.
REPLY:
It should be noted that the shunt R is only needed if you have a series type
screen regulator, which is probably the most common type. If you have a
shunt type screen regulator, the R is not needed PROVIDED the shunt
regulator draws enough idle current to supply all the secondary emission
current the screen will ever draw.
73, Bill W6WRT
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