[AMRadio] filament voltages


Donald Chester k4kyv at hotmail.com
Mon Aug 16 15:16:21 EDT 2004


>
>A while back, you said something about running too little voltage on the 
>older
>big jugs, like 833's, 250THs, 4-1000's, etc...
>Of course, we know that running voltages that are too high will kill the 
>life
>expectancy of the tube, by why is running too little voltage bad for the 
>tube,
>if it's developing full emmission at a lower voltage?

I think low voltage would be ok as long as you are not exceeding the current 
rating of the tube, starving the filament emission by running too low 
filamrnt voltage, or exceeding the rated plate dissipation.

Don k4kyv

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