There is a Univ in Regina. Take a filled bottle down there to the
EE dept and ask a tech to check it for you. It only takes seconds
and is very accurate.
Outside connect to outer foil. Inside just connects from a cork
stopper with 12 AWG solid wire down into the saltwater which forms
the "inner foil" due to the conductivity of the saltwater.
Dr. Resonance
Original poster: "Daniel Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
hi, I live in Regina, Saskatchewan,
Canada. Would it be easier to just measure the
volume with a measuring cup and pouring the
liquid inside? i dont exactly know how to
measure it though... and also, where do i put the
elecctrodes that go from power source to primary
coil? like in the water of the big jug and into
the bottles or just put aluminum foil on the bottoms and connect to that?
From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: saltwater capacitance
Date: Fri, 23 Sep 2005 14:54:18 -0600
Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
Due to the difficulty in determining the precise surface area of an
irregular shaped bottle, it's a lot easier and more accuate to
measure it. Just haul one down to any large Univ. EE dept and ask a
researcher to take a measurement for you. Inexpensive handheld
meters like the Wavetek 37 will do it in a few seconds. Where do you live?
Dr. Resonance
Original poster: "Daniel Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
hey how do i calculate the capacitace of 12 saltwater capacitors?
thanks
Daniel
From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: DRSSTC Additional questions
Date: Thu, 22 Sep 2005 18:12:44 -0600
Original poster: Skip Greiner <sgreiner@xxxxxxxxx>
Hi all
Ok, the primary feedback using Steve's two coil system works
great. New questions
1. The tuning of the system is much broader than any TC that I
have ever built. There is little difference in spark length when
adding or subtracting two or three turns to the primary. Is this
typical of DRSSTCs? Per JAVATC the coupling is between .18 and
.2. The resonant frequency seems to hold pretty steady at 285khz
regardless of the turns in the primary.
2. Doubling the tank cap size definitely lowers the resonant
frequency and the input current goes up dramatically but there is
little effect on the spark length and the primary turns still
seem to have minor effect on the spark length up to a certain
point. Are others seeing the very broad tuning that I seem to be getting.
So far I am only inputting 60vac to the full wave dc bridge and
spark length is approaching 12". The secondary is only 18.5"
long. I am leery of increasing the input voltage until I
understand this apparent broad tuning.
Any comments would be appreciated. Thanks Steve and everyone for
the feedback help.
Skip