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Sync/quench update
From: FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
Sent: Sunday, September 21, 1997 10:16 AM
To: tesla-at-pupman-dot-com
Subject: Sync/quench update
All,
I completed the construction of the 2 gap series quench sync rotary,
and compared its performance with that of the 8 gap series quench
sync rotary, on my 12kV, 30ma neon trans powered TC.
Bottom line is, there wasn't too much difference; sparks still hit the
42" mark on a regular basis, but the sparks may have lacked some
pizzazz using the 2 gap series quench sync rotary.
Observed quench using solid state o'scope and antenna-type pick-
up. At full power, quench occured anywhere from the 1st to the 3rd
ring up beat notch. It was hard to tell how much time was spent at
1st, 2nd, or 3rd notch quench, since this constantly changed. Using
the 8 gap series sync rotary, quench usually occured on 1st or 2nd
notch. Anywhere from 1st to 3rd notch quench is acceptable, so this
test shows that a regular sync-gap, with only 2 series gaps, is
acceptable, but an 8 gap series quench gap is somewhat better. Both
these sync gaps greatly outperformed a vacuum series static gap.
At reduced power levels, the sync gap quenched at the 6th notch
proving once again (as if it hasn't been proven enough already), that
good quenching requires heavy spark loading.
It is interesting to note that the 8 gap series quench sync rotary did
not permit tighter coupling to be used, which suggests that its
quenching capability is only marginally better than the 2 gap series
quench sync rotary. No external series static gaps were used in
any of these tests. Both sync-gaps operate at 120 BPS.
So for those who wondered if the 8 gap series quench feature was
essential for achieving good results from the 12kV, 30ma trannie,
"no it ain't". Still, the 8 gap series rotary sync unit seemed to
enhance the "bolt-like" appearance of the sparks...but this does
become subjective.
These tests were done at k = .11 or so.
John Freau