24 Apr
2011
24 Apr
'11
7:07 a.m.
Can someone here please explain to me, in ** simple English **, the
difference (in usage, not in how they work) between a "control grid
tube" and a "barrier grid tube" ... ?
I am not sure if the terms have different meanings in the States, but
over here, they're not really related at all...
A 'control grid' is an electrode that varies the strength of the electron
stream. Such as the grid in a triode, the first grid in a tetrode or
pentode, the first grid in a CRT, etc.
A 'barrier grid' is specific to a particular type of storage CRT, and
IIRC, it's an electrode ot equalise the potential across the storage
target.
-tony