Re: OLTC update

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bert.hickman-at-aquila-dot-net>

Hi Terry,

Way to go - congratulations on a very successful "first light" (and not
even a single IGBT carcass!)! 

Now "all" you need to do is bump the coupling coefficient up to say
0.153, 0.18, 0.22, or even stretch it to 0.28 (heavans - a complete P-S
transfer in 2 cycles!) to further reduce primary losses. This could
evolve to be an E-field versus coupling coefficient design challenge.
The trick will be to do this without resorting to oil insulation... :^). 

If you're using industrial grade "stretch wrap", it can be any of the
following - High Density Polyethylene (HDPE), Low Density Polyethylene
(LDPE), Polypropylene Film, or linear low density polyethylene (LLDPE) -
all make excellent insulating films. If you're using plain old Saran
Wrap, then it's Polyvinylidene Chloride - not as good as the PE or PP
films, and the higher dielectric constant may actually worsen breakdown
of the air space.   

And, if you get a chance, try to capture that "blue glow" in a shot or
two...  :^)

-- Bert --
-- 
Bert Hickman
Stoneridge Engineering
"Electromagically" Shrunken Coins!
http://www.teslamania-dot-com