Re: Dead 833s? (was:RE: new single 833A VTTC)

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

Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net> 

Uhhhh NO!  Please look such things up with more care,  obviously if the
833*A* or 833*C* was a mercury rectifier, it would not work in a VTTC and
many people have used it in VTTC's remember letters make a difference its
833A! or 833C (graphite plate)!

Regards - Jim Mitchell

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, December 24, 2003 12:46 AM
Subject: RE: Dead 833s? (was:RE: new single 833A VTTC)


 > Original poster: "C. Kollett" <ckollett-at-falconaerosystems-dot-com>
 >
 > Look up the specs on an 833. Isnt it a mercury vapor recifier.
 >
 >
 >
 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Tuesday, December 23, 2003 2:22 PM
 > To: tesla-at-pupman-dot-com
 > Subject: Dead 833s? (was:RE: new single 833A VTTC)
 >
 >
 > Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
 >
 > Wow Dave!  I think i heard someone else mention mutated 833s as well
(Dan?).
 >
 > Just wondering, has anyone killed an 833A in VTTC service yet?  If so,
what
 > was the failure and what was the cause??  I for one am very curious!  Even
 > more curious as to how far you could push one of these tubes before they
 > give up.
 >
 > Steve
 >
 >
 >  >From: "Tesla list" <tesla-at-pupman-dot-com>
 >  >To: tesla-at-pupman-dot-com
 >  >Subject: RE: new single 833A VTTC
 >  >Date: Tue, 23 Dec 2003 12:38:40 -0700
 >  >
 >  >Original poster: "David Trimmell" <humanb-at-chaoticuniverse-dot-com>
 >  >
 >  >Steve, yes staccato has improved spark performance greatly, and tube
 >  >life! My uncle who is a radio engineer, told me about a AM station he
 >  >work on many years ago that was using 4 833A's in the output. The
 >  >station was still putting out a good signal, but it was time for Tube
 >  >rotation and one of the four tubes had been running so hot that the
 >  >glass melted enough that a part of the glass envelope was sucked in
 >  >towards the plate! It was about the size of a quarter on the outside and
 >  >made it nearly too the plate. He had it displayed as a lamp in his house
 >  >for many years. The tube was still functional!
 >  >
 >  >And BTW, one heck of a VTTC you got there!
 >  >
 >  >Regards,
 >  >
 >  >David Trimmell
 >  >
 >  >-----Original Message-----
 >  >From: Tesla list [mailto:tesla-at-pupman-dot-com]
 >  >Sent: Monday, December 22, 2003 7:33 PM
 >  >To: tesla-at-pupman-dot-com
 >  >Subject: RE: new single 833A VTTC
 >  >
 >  >Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
 >  >
 >  >Actually, i just looked at the voltage again just now, it looks like
 >  >only
 >  >10.3V or so.  Im not terribly worried about tube lifetime anyway.  I ran
 >  >
 >  >the coil again today for a long time at 15pps.  At 22" the plate is just
 >  >a
 >  >tad bit colored, at 20, it gets more noticable, and at 30pps its
 >  >probably
 >  >at about its limit, or at least as far as i would push it.  It makes me
 >  >wonder how people got long sparks before the use of staccato!  It seems
 >  >that the tube would be running incredibly hot really.  Did people just
 >  >run
 >  >the plates bright red?  Or am i still missing something with my design?
 >  >
 >  >Steve
 >  >
 >  > >>>>>SniPPPPPPPPPPPPPPPPPPPP
 >  >
 >
 >