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Crt cathode meterial

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#15

04-11-2017, 10:30 AM

Electronic M Electronic M is offline

M is for Memory

Join Date: Jan 2011

Location: Pewaukee/Delafield Wi

Posts: 15,441

Quote:

Originally Posted by timmy

from what I understand the cathode meterial was said to last a hundred years so why are there so many tubes with low or no emission due to cathode meterial.

That may be the shelf life, but CRTs and most vacuum tubes in general only have a service life (hours powered on) of 10-30k hours IIRC.

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