Re: 4-125A, vacuum tube do's and donts

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

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>

Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"

> <Fucian-at-aol-dot-com>
 
> Hi all,
> I have gotten my 2 4-125As and am about ready to begin my

>first VTTC!  I dont know much about vacuum tubes so I want

>to ask y'all what are the things NOT to do to a vacuum tube

>that maybe y'all have done while experimenting.  I know my 
> tubes can handle 125watts apiece and 3kv plate voltage.


	Check filament voltages.  Over driving the filament
	will drastically shorten its life.  Need not be
	fanatical about this, but check when new, and
	from time to time.

	(That said, overdriving them can increase power
	output, but risks tube life, as above...)


> Just what are the key things NEVER to do to a tube.


	cf above.  Also:
	Get used to the fact that they are HOT.  Don't
	grab them when hot...  8)>>

	best
	dwp