Assertion: tube's filament | /r/HasProperty | cathode
Facets:
value: in this type
type: OTHER
value: in a directly heated cathode
type: MANNER
Source sentences:
text: Initially, the only such device was a diode with only a filament (cathode) and a plate (anode).
text: In a directly heated cathode, the filament is the cathode and emits the electrons.
text: The filament (cathode) has a dual function: it emits electrons when heated; and, together with the plate, it creates an electric field due to the potential difference between them.
text: By placing an additional electrode between the filament (cathode) and plate (anode), he discovered the ability of the resulting device to amplify signals.
text: In this type, the filament itself is the cathode and emits the electrons directly.