thermionic cathode

Definition

Electronics

• A cathode, such as that in an electron tube, that emits electrons as a consequence of its being heated. Such a cathode may be directly or indirectly heated. This contrasts with cold cathode, which does not require an applied heat to function. Also called hot cathode.

Nearby Definitions of “thermionic cathode”

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Contexts for “thermionic cathode”

1 definition in context
• Electronics