Re: 833A's plate color

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Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

This says the plates should be an "orange-red" color:

http://www.adamhorden.co.uk/site_data/833a.pdf

Sounds like you are running a little too much power.  But I do that 
too for a short time ;-))  I try to be very careful since bright 
orange is also the color of molten glass!

Maybe someone knows if running them bright orange will decrease their 
life to say 100 hours, or if it will decrease their life to 10 seconds?

High voltage isolated RF current measurements are nasty.  Best just 
to judge by the color...

Cheers,

        Terry


At 01:03 PM 3/21/2006, you wrote:

>  I am running an 833A based coil.  The tube is NOS RCA from a now 
> defunct AM radio station.  I have approx. 3000 vac on the 
> plates.  I'm getting a nice 18 - inch brush discharge, but the 
> plate color is bright orange.  I have been told that I am pushing 
> this tube.  Is this correct?  What should my plate /current/current 
> be?  How can this be measured?
>
> Thanks