[Amps] filament tube life, turn on's and time on target

[Steve Thompson]

> To amplify what Carl said technically and Colin's statement, I would just add 
> that life is too short. Go ahead and use the amplifier as you need to and want 
> to. 

My main fear would be for the on/off switch. The repeat inrush 
current could see it off - I'd suggest leaving it on and adding an 
external boxed switch which could be generously rated and would be 
easier to replace if the need arose. In that box I also added step 
start and wiring to allow the fan to run for a while after the amp 
was shut down.

Steve