diode

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Related to pentode: triode, tetrode

diode

[dī′od]
1 an electron tube or x-ray tube having a cathode and an anode.
2 an electrical device that has a higher conductance for current flowing in one direction than for current flowing in the opposite direction.

di·ode

(dī'ōd)
A bipolar device that permits a flow of electrons in only one direction.
Synonym(s): silicone diode.
[di- + -ode fr. anode, cathode]

diode

a piece of equipment with two terminals which carries electrical current in one direction only.
References in periodicals archive ?
Mastersound classifies the amp as parallel, single-ended pentode class A, with a rated bandwidth of 15 Hz-30 kHz.
The SE-40 differs from SETs in several ways, the most important of them being that it is a more conventional amplifier design using a pentode output stage, not triode.
The A205 is a very small, very plain looking little amplifier using EL84 pentodes in single-ended mode.