From: FutureT@aol.com
Date: Sat, 18 May 2002 11:21:37 EDT
Subject: Re: [TSSP] Topload breakout potentials
--part1_c5.2307bfa2.2a17cb81_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 5/18/02 3:31:13 AM Eastern Daylight Time, tesla123@pacbell.net writes: Bart, I realized that to make the comparisons really correct, your spark length should be double what mine is, since your secondary is about double the size in all dimensions. But the toroid is not double, unless I use the 4" x 13" toroid, then yours is about double. I could reduce my input power to make my spark half the length of yours. Then I should see just one streamers with the 4 x 13 toroid. I'm not sure if this all will give any useful info? I just thought it may make an interesting comparison, to see if we both wind up with the same freq offsets. I think we would. Or we could even do the comparison with multiple, but equal numbers of streamers, say two or three. My apologies for missing your previous comment about the broken meter. I asked about the current, because I was going to apply a rough rule of thumb to calc the bang size. This was before you did the gap-voltage test, which is probably more accurate than my calcs would have been. I would have had to make some assumptions about ballast adjustment and losses. I know that ballasts can introduce tremendous losses in some cases. I used a variac as a ballast one time, and it doubled the input power for the same streamers length. Cheers, John > > >> Bart, What's the input current and voltage before the ballast, or into >> the >> variac? And what's the breakrate? It sounds from your comments >> above that you're running at 120 bps or so? >> >> > Input current is unknown (as mentioned, the current meter died. I have to > replace it). Voltage across the voltage variac is 240. I allowed 180V out > the tap for the test. The breakrate on the SRSG is 240bps. The ball gap > test was simply allowed to arc, not run. My SRSG can easily be configured > for 60, 120, 180, 240, 300, and 360 bps simply by adding or removing > electrodes (one set screw and the electrodes are out or in), so I can set > up for 120 bps as per your other post. > Take care, > Bart --part1_c5.2307bfa2.2a17cb81_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 5/18/02 3:31:13 AM Eastern Daylight Time, tesla123@pacbell.net writes:
Bart,
I realized that to make the comparisons really correct, your
spark length should be double what mine is, since your
secondary is about double the size in all dimensions. But
the toroid is not double, unless I use the 4" x 13" toroid, then
yours is about double. I could reduce my input power to make
my spark half the length of yours. Then I should see just one
streamers with the 4 x 13 toroid. I'm not sure if this all will give
any useful info? I just thought it may make an interesting
comparison, to see if we both wind up with the same freq
offsets. I think we would. Or we could even do the comparison
with multiple, but equal numbers of streamers, say two or three.
My apologies for missing your previous comment about the
broken meter. I asked about the current, because I was going
to apply a rough rule of thumb to calc the bang size. This was
before you did the gap-voltage test, which is probably more
accurate than my calcs would have been. I would
have had to make some assumptions about ballast adjustment
and losses. I know that ballasts can introduce tremendous losses
in some cases. I used a variac as a ballast one time, and it
doubled the input power for the same streamers length.
Cheers,
John
What's the input current and voltage before the ballast, or into the
Bart,
variac? And what's the breakrate? It sounds from your comments
above that you're running at 120 bps or so?
Input current is unknown (as mentioned, the current meter died. I have to replace it). Voltage across the voltage variac is 240. I allowed 180V out the tap for the test. The breakrate on the SRSG is 240bps. The ball gap test was simply allowed to arc, not run. My SRSG can easily be configured for 60, 120, 180, 240, 300, and 360 bps simply by adding or removing electrodes (one set screw and the electrodes are out or in), so I can set up for 120 bps as per your other post.
Take care,
Bart
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Maintainer Paul Nicholson, paul@abelian.demon.co.uk.