Re: Filament Issue

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

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

Yes!.. Low heater voltage will always give low output. The filament heat
supplies the source of current to the tube. low heat low output.
    Robert   H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Mon, 01 Dec 2003 08:03:34 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: Filament Issue
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Mon, 1 Dec 2003 08:10:04 -0700
 >
 > Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>
 >
 > Hi, I was testing the voltage to the filament on my 813 tube in my VTTC,
 > and I noticed that it was like 4v, when the 813 has a 10v filament!  I am
 > wondering, is this a bad thing?  The filament does get hot, and the VTTC
 > works, but it doesn't work optimum, could low heater voltage cause this?
 >
 > Regards - Jim Mitchell
 >
 >