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First Coil Test at WPI
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Sunday, March 22, 1998 10:30 PM
To: Tesla List
Subject: Re: First Coil Test at WPI
to: Joshua
You might first actually measure your coeff. of coupling. This value will
give you a very good idea of where you want to be before you start a lot of
unnecessary construction or reconstruction work. A good value is 0.18 to
0.22 range for most small oscillators. If you have considerably more or
less than this then perhaps some changes would be worth considering. It's
also very easy just to try elevating your sec. coil with some scrap pieces
of plywood for a temporary test. Keep your variac at a low setting for the
initial testing -- perhaps comparing outputs elevated and nonelevated at
say 35-40% setting on your variac.
DR.RESONANCE-at-next-wave-dot-net
> From: RMS Titanic, Captain [SMTP:seraphim-at-WPI.EDU]
> Sent: Sunday, March 22, 1998 9:01 AM
> To: Tesla List
> Subject: Re: First Coil Test at WPI
>
> At 12:00 AM 3/22/98 -0600, you wrote:
> >
> >----------
> >From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
> >Sent: Saturday, March 21, 1998 8:36 PM
> >To: Tesla List
> >Subject: Re: First Coil Test at WPI
> >
> >to: Joshua
> >
> >After tuning primary, be sure to try elevating your sec. coil in
increments
> >of 1/4-1/2 inch. You should find an optimum point of elevation that
> >produces the longest sparks, ie, when the coeff. of coupling is just
right
> >for your setup. You could gain 6-8 inches or more of additional spark
with
> >these experiments. It takes time but is worth the effort.
> >
>
> Dr. Res,
> My coil has a variable geometry primary (ie. I can change the
inclination
> and hieght of the helix). Do you think it would be a good idea to
> exerimment with angle sererately or after I have found an ideal hieght?
> Thanks,
> Josh
> ____
> /\/\ ((____)) /\/\/\/\ Joshua Resnick
> / | | \ \ http://www.glubco-dot-com/weaponry
> / | | \/\/\ \ __ http://ece.wpi.edu/~seraphim
> / ____| |____ \ - One Room - One Dream -
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