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Re: Slide Choke Help
Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
The biggest issue is the cross sectional area of your core and the
volts per turn. I designed a ballast with about 1 volt per turn and
6 square inchs of core. These two parameters determine the maximum
flux thru the core and your margin from saturation. If you need to
reduce the number of turns to get the inductance you are seeking, the
area needs to go up (everything else the same). Of course, if the
area goes up, the inductance also goes up. Trial and error will
determine the bottom line and other's experience can help reduce the
trial and error.
Original poster: "H.S. J." <hsheltonj@xxxxxxxxx>
Ive just aquired as of Saturday, May 05 2007, A nice PT from Aaron
H.. Although, I need to make a ballast for it so I can finally turn
the thing on :D I would like to mkae one that is about capapable of
being variable between 1A and 40A or so and, i would like some help
on constructing one. I have poked around on the internet and on the
list but, most links that were given are now dead or, the topic was
so old, the technology is like out of date. I need help because, I
have NO idea how large this thing should be and how to start going
about making it, what gauge wire to wrap around the PVC, how many
turns, how long should the PVC Be, etc...
I can go and buy stuff but, as of now, I have PVC pipe in the ranges
of 1.5" ID to 6" ID, loads of coax cable, 2 100 ft. rolls of 18g
baling wire, 10' .25" copper refrigerator tubing, 22AWG magnet wire,
and..some other stuff.
So, any ideas from people that have made this kind of variable
ballast, throw them out there for all to learn.
You may reply back at: <mailto:hsheltonj@xxxxxxxxx>hsheltonj@xxxxxxxxx
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