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Re: [TCML] Spark gap quandary
Shannon,
It's been suggested and tried before, but doesn't work very well.
Problem is that what is passing between the electrodes is a nice hot
high power plasma. Pretty much the same as a plasma cutter from Hell.
There aren't many rotor materials that stand up to that kind of abuse
for very long.
The typical glass epoxy disc material degrades quickly under this sort
of abuse, and ceramics don't do well under the radial stresses of high
speed rotation. Just put an industrial heat gun on a piece of circuit
board for a minute or two and see what happens.
In a disc with flying electrodes, it's the metallic electrodes that take
the beating, not the insulator.
You'll have to find another invention to hang your name on.
Dave
On 2/9/2012 7:47 PM, Weinhold Shannon L wrote:
Hello all.
So I was doodling some ideas for a rotary spark gap I am thinking of
building and an idea came to me.
I envisioned a rotary spark gap utilizing a electrode-less spinning disk
equipped with slots...fashioned in such a way so that the gap could only
fire when the stationary electrodes were aligned with one of the slots.
I'm thinking it could be pretty thin so that the stationary electrodes
would be in close enough proximity that they would naturally arc if
there was no barrier, and that the slots would be inset enough from the
edges of the disc so that the arc could not wrap around the edge of the
disk and make a connection during the break.
Seems like it would make for faster quenching (immediate) and the slots
could perhaps even be variable so that they could be tuned, allowing for
a specific duration of connectedness. (I believe you folks refer to this
as dwell?)
No flying electrodes to worry about cleaning or machining into a form.
Is it too good to be true?
(I get it named after me if it works...lol)
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