How a Cathode Heater Works: A Clear Explanation

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NJV
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How does a cathode heater work? Can't seem to find a straightforward explanation anywhere.
 
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NJV said:
How does a cathode heater work? Can't seem to find a straightforward explanation anywhere.

This is very vague! You need to put some context in this. I could easily just say it is a heater that heats a cathode. Would this have answered your question? Or are you actually thinking about thermionic cathodes that work via heating?

See how your question is vague?

Zz.