Re: K calculations

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

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Parpp807-at-aol-dot-com>

In a message dated 2/15/01 12:48:59 PM Central Standard Time, 
tesla-at-pupman-dot-com writes:

<< Sorry, but it just isn't that simple.  Your approximate formula for the
 inductance of a solenoid is just that, and accurate over a limited range
 of R/H.  There is a way to calculate the coupling for two concentric
 coaxial coils of the same diameter, but that isn't the way most TC's are
 built.
 
 Ed
  >>
Ed,
See the appendix pages of Terman for the empiracly derived formulas for 
helical coils
of various configurations.

Ralph Zekelman