[Amps] Filament/heater life

Peter Chadwick Peter.Chadwick@zarlink.com
Tue, 2 Apr 2002 16:05:19 +0100


Has anyone any hard information (as opposed to rumour, surmise, etc) as to
whether or not running heaters/ filaments of bigger tubes (60 watts or more of
heater/filament power) on DC has a deleterious effect on life?

Metal migration is obviously a factor that comes to mind, which of course,
doesn't happen with ac.

73

Peter G3RZP