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Control grid
Meaning
Noun
●
An
electrode
used in
amplifying
thermionic valves
(
vacuum tubes
) such as the
triode
,
tetrode
and
pentode
, used to control the
flow
of
electrons
from the
cathode
to the
anode
. It usually
consists of
a
cylindrical
screen
or
helix
of
fine
wire
surrounding
the
cathode
, and is
surrounded
in turn
by the
anode
.
Sourced from
Wiktionary
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