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Re: K Factor & Mutual Inductance
Subject:
Re: K Factor & Mutual Inductance
Date:
Wed, 9 Apr 1997 07:16:02 +0000
From:
"John H. Couture" <couturejh-at-worldnet.att-dot-net>
To:
Tesla List <tesla-at-pupman-dot-com>
At 04:01 AM 4/8/97 +0000, you wrote:
>Subject:
> Re: K Factor & Mutual Inductance
> Date:
> Mon, 07 Apr 1997 11:44:00 -0500 (EST)
> From:
> Benson_Barry%PAX5-at-mr.nawcad.navy.mil
> To:
> tesla-at-pupman-dot-com
>
>
>Hi John, All,
>Have you ever tried the formula Q = sqrt( L / C ) / R.
>
>Barry
>
> ----------------------------------------------------
Barry -
I have never seen the above Q factor equation before. What would you
use
for R? In the usual equation Q = X/R where X = 6.283 F L the R is
an
effective resistance, not DC or AC. The only way to find the R is to
use a
value for a typical Q and X and solve the equation for R. The Q factor
like
the K factor is easily found by tests after the TC is built, however, at
the
design stage these two factors are difficult to determine.
The basic nature of Q for Tesla coils has to do with the energy stored
in
the field of the coil and the energy dissipated. The Q factor also
involves
resonant rise in voltage and other electrical effects. It is also
interesting that Q involves other phenonmena such as in the swing of a
pendulum and in horological science ( measuring time).
John Couture