......
>"Is the rf voltage in a final tank coil equally distributed across the coil?"
The short answer is yes provided the coil is not self-resonant.
>The reason I'm asking this is I'm building an amp that will use
>approximately 5500v B+. I'm probably going with a roller inductor (30 amp
>30mH Gates), due to fear of the arcing contact caper in a band switch.
The thing that causes bandswitch contact arcing is most often
intermittent vhf oscillation. A roller inductor can arc for the same
reason.
>
>The amp would be capable of about 5kw with a 500watt driver, to be totally
>honest, so I'm selling my Centaur to avoid temptation.
>
The peak RF voltages across the tank inductor and tune capacitor are
virtually the same whether you drive the tube with 50w or 500w. However,
the values of C and L are vastly different if the tank is designed for
use with a drive level of 50w.
>"Considering the voltages on the coil, and the potential power level, does
>a band switch exist to reliably switch these voltages?"
Yes. I have a couple of them that I would like to find a home for. What
are your requirements?
cheers
Rich...
R. L. Measures, 805-386-3734, AG6K
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