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Re: bombarder sizes
>The people who make electrodes give very specific ranges of pressures to
>process thier specific electrodes on. If you have too small of a bombarder
>you will be forced to continue to pull the vacuum down to maintain the arc
>stream. You are then not following the mfgs. instructions. If you are a
>ChemE you get some slack here. Otherwise follow the instructions or you'll
>end up in trouble. What this means in real life is you can't just think of
>your vacuun pumps as being the heart of your system, the strength of the
>bombarder is extreamly important. If you want to have control over tubes in
>the 8 foot or larger range buy a 15kVa.
I'm a bit confused about this. My bomber is 10 KVA, with a 20kv secondary.
Indeed I often reduce the pressure lower than I want - to maintain the arc
with multiple high-footage units. But would not the bomber's _voltage_ be
more important here than the KVA rating? Even with long units, I usually
have a decent amount of headroom on my choke when pushing 500ma.
Tell me if this assumption is wrong: say you had another bomber - a 15kva
with a 20kv secondary. Would it not have the same arc-striking performance
as my own, only with more MA capacity?
Someone (Kenny, Ted?) described a system of switches for doubling up the
voltage on the bomber's primary - making the secondary 2x the normal
voltage (with 1/2 the milliamps, of course). I've thought about doubling
up, but the thought of 40 kv is a little scary, and I would want to
engineer-in more safety first.
-John
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