Regarding glass/wire seals,
I've been wondering where I could get the special wire they use for the
pass-through on a glass bulb?
I am interested in playing around with simple homemade vacuum tubes.
--
Martin K

Bob Axtell wrote:

> A few years ago, there was a push on to keep incandescent bulbs ON but
>
>at a very low current, to prevent
>the sudden ON pulse that "causes the filament to weaken and then burn 
>out early". But I was told by someone
>later that while that was true to some extent, the main reason is that 
>the air seal is slowly allowing more and more air
>molecules to enter the bulb, and that is what causes the early demise.  
>Seems that a better seal COULD be made, but
>then they'd sell fewer bulbs...
>
>--Bob
>  
>


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