Crossword puzzle clue "two element electron tube"

Here are the possible solutions for two element electron tube clue

Answer
Clue
Relevancy
diode
Clue
Two-element electron tube
Electron tube with two elements
Definition
a type of electron tube
anode
Clue
Electron-tube element
Positive terminal of an electron tube
Definition
a positively charged electrode
abattery
Clue
Electron tube heater
anodes
Clue
Electron tube parts
Electron tube ends
Definition
ANODE, a positively charged electrode
cathode
Clue
Electron source in a picture tube
Definition
a negatively charged electrode, also KATHODE

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