[Amps] Miller-Larson effect on thoriated tungsten filaments

[Mike Waters]

I discovered some new (to me) information on maximizing the life of
amplifier tubes with thoriated-tungsten filaments. I just uploaded it to:
http://www.w0btu.com/miller-larson_effect.html

Basically, every time the tube filament passes through a certain
temperature range as we turn it on (or power it down?), we shorten the life
of the filament, due to the Miller-Larson effect.

I would appreciate any comments on it, good or bad.

73, Mike
www.w0btu.com