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Re: [TCML] Measuring Voltage?
Neal Namowicz wrote:
Yeah, you know, it just seemed too easy when I first put it together.
Okay, so someone mentioned "guesstimating" the voltage, that works for
someone like myself who is math-challenged. So, ballpark figures, what
might my secondary output voltage be from a 4" coil, 9kv power supply?
The streamers run about 25 to 30". Also, how would that change for a
bi-pole coil with a secondary gap of only a few inches?
I ask these questions partly for my own curiosity, but also when people
see my stuff in operation, I can give a fairly decent answer to when
they ask, how much voltage IS that?
Thanks everyone for your input!
Neal N.
there's a very, very loose relationship between spark length and
voltage. (spark gap tables only work for short sparks in an essentially
uniform field, neither of which is the case for a TC)
The voltage is limited, for the most part, by the radius of curvature of
your topload. For a smooth sphere, the maximum voltage is about 30kV/cm
of radius. That is, a 12" sphere (15 cm radius) can have about 450kV
on it before it starts to make sparks.
And that's a maximum, surface imperfections and bumps will reduce it.
Most small coils probably run in the several hundred kV range. There's
no way that a small coil is a megavolt or more (as you sometimes see in
ads or such).
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