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Re: coil update...
Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-uswest-dot-net>" <bigfoo39-at-telocity-dot-com>
Tesla list wrote:
> Original poster: "Gregory Hunter by way of Terry Fritz
> Please tell me more about your current limiting
> inductor. How big is the core, and what is it made
> of. How much of what kind of wire is wound on it. Is
> it commercial or homebrew, etc.,etc. If you've
> already covered this material on the list, please
> reply off-list.
> Many Thanks,
the inductor is a homebrew.. it is an EI core without the I part the
winding consist of THHN #10 solid
copper wire. there are 6 layers at 32 winds per layer for about 200 turns
total. the core dimensions are
as follows ( the E core is positioned so that it is legs up ) |_|_| (
front view) core material is
laminated silicon steel. ( i have no idea what the BH curve is )
width 6.5" front to back
length 7" side to side
height 6.75" top to bottom
outside E legs 1.125" ( width looking at front)
space between E legs 1.25"
depth of E leg to base 5.625"
center E leg 2.125"
bottom of E 1.125"
when this assy. is run with the coil fully seated on the core I get about
20 amps current at 280V, with
about 1" of coil extended beyond the core the Amperage is approximately 40
A at 280V. The coil seems to
run warmer at the 40 amp rating.
I plan to rewind the core with a double set of #10 wires to increase the
amp handling capacity later on.
altho this will reduce the number of turns available for the window size.
Ill probably see a decrease of
inductance, therefore an increase of amperage flow ( maybe this will give
me about 40 - 50 A at a full
core/coil setup, no need to lift the coil off of the center core) .