Re: Toob vs. Tube

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Steve Ward" <steve.ward-at-gmail-dot-com> 

 >         Good.  Some of the guys fail to realize the importance of having
 > filament transformers available for some of these big tubes.  I'd think
 > the 304TL's would be ideal because of their ruggedness.
 >
 > Ed
 >
 >

You can usually make your own filament transformers anway with old
lighting ballast transformers or MOTs.

While the 304TL might be electrically rugged, its definately got some
mechanical issues.  Awhile back i had a 304TL filament crack from some
minor jarring.  Also, most of the 304s i try to get off of ebay always
ship out fine, but when i get them their filaments are always broken.
Something to beware of, especially with these old tubes.

Steve