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RE: caps and JL
Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jduva-at-baytechnologies-dot-net>
Here's an interesting tidbit that I've run into when placing caps in a JL
I have a rebuilt 12/60 NST that now runs at 11850V and 184 ma. By itself,
running a JL for testing, it could raise an arc to jump a gap of about 4"
while drawing a full 15 amps from the 120V mains line. I started to play
around with my 30nf 35kV Maxwell caps, first wiring one in parallel with the
JL (machine gun, if I remember correctly), then I wired one in series with
one of the HV leads from the rebuilt NST. I enjoyed a louder 60Hz hum,
whiter arcs, and longer arcs. I was also now drawing between 6-9 amps from
the wall as the arc ran up the JL. Intrigued, I wired a Maxwell cap in
series with both HV leads from the NST. The whole setup will now arc the 7"
gap at the top of my JL and draw a measly ~1 amp from the wall, according to
my analog panel meter. The secondary windings in the NST (potted in
petroleum jelly...many odd looks at the store with 8 cans of petroleum
jelly...) still get nice an hot..hot enough to almost boil the petroleum
Is this power correction from the secondary side? If so, has anybody
noticed a lower amp draw from the wall in resonant charging tank circuits?
I can't wait to use these Maxwell caps and this NST in a coil!
wishing there was more time in the day...