> From: Rich Measures <measures@vc.net>
> To: "Peter Chadwick" <Peter.Chadwick@gpsemi.com>,
> "'amps'" <amps@contesting.com>
> Subject: Re: [AMPS] series filaments
To: <amps@contesting.com>
> Date: Mon, 17 Nov 97 16:34:37 +0000
> >Tom says
> >>How do you get the tubes to share equal hum-free emission currents?
> >
> - At 50 or 60 Hz, the emissivity of a 3-500Z filament is virtually
> constant. . . . What could this possibly have to do with Mr. Rauch's
> claim of inaccurate measurement of inrush-current in the series-connected
> TL-922 filaments?
Rich.
Read more carefully. I said it was a bias problem that affected
emission.
Bias voltage does affect emission, at least in my gridded tubes.
73, Tom W8JI
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|