On Jun 30, 2006, at 12:50 PM, Colin Lamb wrote:
> Rich asks:
> "Can an unloaded tank reach potentials higher than the breakdown
> voltage of its Tune C?"
> Yes. We are not dealing with dc, but waves. These waves do not
> necessarily where you expect them or want them to. The peaks will
> vary depending upon the frequency and length of components. It
> might be easier to imagine standing waves on antennas. The same
> thing will apply in tank circuits.
So when one of these waves shows up. the breakdown potential of the
air-variable cap doesn't even matter?
> So, having a plate tuning capacitor that breaks down at 5 kv will
> not necessarily prevent arcing at a plate switch that is rated a 6 kv.
... even though they both connect to the same point - the outgoing
end of the DC blocker cap.
Amazing, Colin, simply amazing.
> Colin K7FM
R L MEASURES, AG6K. 805-386-3734
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