[Amps] Advice

Ron Youvan ka4inm at tampabay.rr.com
Sat Dec 5 18:22:54 PST 2009


> The chart that I am looking at says: 8877 requires 35 cu ft at .41 back
> pressure.

> A 3CX800A7 requires 19 cu ft at .5 back pressure. Two of those would require
> 38 cu ft at .5 back pressure. 

   I assume these values are at the maximum power dissipation, running a tube at reduced power 
dissipation allows operating at reduced cooling effort, so two tubes splitting a given amount of 
dissipation would not require twice the cooling.
-- 
    Ron  KA4INM - The only real problem is death is so final.


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