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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Does Anyone Know What Produces the Brown Stains Inside Some Tubes Like the 845 (NT)? posted by GKwei on September 27, 2004 at 17:00:07:
They're caused by X-rays. That's why you don't see that type of discoloration on tubes that run at lower voltages, they don't
produce X-rays. This effect is useful as on glass tubes that
have no getter, like 4-400, 3-500, etc, it gives a rough
visual indication of the amount of use the tube has had.
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Follow Ups
- X-rays - Uncle Ned 19:57:44 09/28/04 (3)
- Re: X-rays - Sector-7G 20:19:36 09/28/04 (2)
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