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Re: How low can a spark gap go?
Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Greg,
At 05:00 PM 11/1/2006, you wrote:
BIG "snip"
>
> The PIRANHA SISG based coil in the link above has a
> Q of about 30
> with Rp=0.25 (electronic gap). If Rp = 3 (standard
> spark gap) then
> the Q is only 2.5 and the coil would not work well
> at all. It might
> make a "little" spark...
>
Cool deal about the SISG spark gap modules. Very nice
documentation. But what about quenching? Do these
SISGs quench at all?
No. So far, they don't quench at all!! I tried a SCR circuit that
would drop out the gate voltage after a timing, but it never worked
at all... Maybe there will be a quench circuit someday, but not today...
Does quenching matter at super
high Q?
I have not missed it.
I think Mark Dunn has used a low value gate discharge resistor to do
the quench some. I think he reported that it helped a little.
The PIRANHA has a big Cp and sort of low Lp so the Q is only about 30
despite the low Rp of 0.25 (it is actually a bit less). Quenching
might help there, but ScanTesla does not report any giant advantage
or anything.
So I am going with no quench and no sync triggering. Just letting
the thing do as it pleases, and it seems very happy ;-)))
Cheers,
Terry
Thx,
Greg
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