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Re: [TCML] Spark gaps (again)



otmaskin5@xxxxxxx wrote:
I've been following earlier discussions about higher losses
associated with multi-segmented?spark gaps (i.e., Richard Quick type)
compared to a?single gap.? It's clear that the experience of this
group has been power losses are significantly less with?a single gap
style with adequate airflow.? But I'm not sure I caught why that is.?
What is the reason that a 0.27" single gap loses less power than an
9-gap / 10 pipe RQ gap that has total gap size of 0.27"?? If total
gap spacing is the same for both, why would one be more lossy than
the other?

The voltage drop across a gap is the sum of a fixed cathode drop (on the order of 50-100V) plus a "arc column" loss which is quite small (for high current arcs).

So multiple gaps in series has about the same arc column loss, but multiple cathode drops.

Good quenching though.



One other question, has anyone experimented with a RQ style using
only 2 parallel pipes for a single gap???If so, what were the
results.? With good air flow, it seems this set up?would be good for
keeping the gap cool considering airflow goes between, around and
through the pipes.? And you could make the pipes longer, say 4 to
5?inches for better heat sinking ability.?


I use 3 sections of pipe arranged in a triangle. Two are fixed, and the one in the middle is adjustable.

Sorry to take everyone back to an old topic, but I've been away for a
while.? Thanks, Dennis Hopkinton MA _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla


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