-
available variable-mu
pentodes were the RCA 239 in 1932 and the
Mullard VP4 in 1933.
Power pentodes or power-amplifier
pentodes.
Power pentodes are
designed to...
-
became obsolete in the
middle 1950s.
Pentode field-effect
transistors having 3 gates,
similar to
vacuum tube
pentodes have also been
described Triple emitter...
- for
amplification and switching.
Additional electrodes create tetrodes,
pentodes, and so forth,
which have
multiple additional functions made
possible by...
-
computer had
roughly 2000
vacuum tubes (mostly type CV2179/A2134
pentodes, EL81
pentodes and CV2493/ECC88
double triodes) and 2000
germanium diodes. Nineteen...
-
number identified a 'high slope' (sharp-cutoff) tube For
power pentodes and triode-
pentode combinations, even
numbers usually indicate linear (audio power...
-
electrically to the
octal base EF37A and the
Rimlock base EF40.
Unlike many
pentodes, it was
designed specifically for
audio applications, with low
noise and...
- beam
tetrode which RCA
referred to as a beam
power tube.
Although power pentodes and beam
tetrodes have some
differences in
their principles of operation...
- with
classic tubes such as the 2A3 or 18
watts from the type 45.
classic pentodes such as the EL34 and KT88 can
output as much as 60 and 100
watts respectively...
-
guitar amplifiers use a
class AB1 push-pull
circuit with a pair of
power pentodes or beam tetrodes, 6L6 or EL34 but
occasionally KT88, 6550, or the lower-power...
- to the
anode and
offers significant performance improvements over
power pentodes. The 6L6 was the
first successful beam
power tube marketed. In the 21st...
