[Amps] 3-500z Silly question

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Thu, 3 Sep 2009 21:04:34 -0700, MIKE DURKIN <patriot121 at msn.com> wrote:

>So ... im wondering what life reduction would there be .. If the voltage was 6V-AC and alot of forced air cooling.

REPLY:

Forced air cooling would not help. The problem is one end of the filament would
be doing more emitting of electrons than the other end and would wear out
sooner. 

Presumably, one could reverse polarity every so many hours of use and even it
out. Personally, I'd just use AC.

73, Bill W6WRT