Definitions
There is 1 meaning of the phrase
Cold Cathode.
Cold Cathode - as a noun
A cathode that is a source of electrons without being heated
Example Sentences
"A cold cathode is an electron-emitting cathode that operates at or near room temperature."
"The cold cathode in a vacuum tube helps to produce and control the flow of electrons."
"Neon signs often use cold cathodes to emit light when an electric current passes through them."
"In a cold cathode x-ray tube, the cathode emits electrons when a high voltage is applied."
"Certain types of cold cathode lamps can be dimmed or controlled using electronic ballasts."
