A measurement of solenoid current distribution

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

Original poster: "Paul Nicholson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <paul-at-abelian.demon.co.uk>

Precision measurements of a solenoid current profile have been
made by Terry Fritz.  

 http://www.abelian.demon.co.uk/tssp/tfcp260302/

The results give good agreement with the current profiles
calculated according to the differential equations for the
solenoid derived in 

 http://www.abelian.demon.co.uk/tssp/pn2511.html

In particular, the elevated current maximum caused by currents
circulating through the coil's internal capacitance is clearly
demonstrated in this experiment, as is the fact that the effective
energy storage inductance at resonance can exceed the DC inductance
of the coil by a significant amount.

An earlier experiment, also carried out by Terry, gave us a
precision measurement of a Tesla coil's voltage profile:

 http://www.abelian.demon.co.uk/tssp/pn2510/

Many thanks to Terry for performing these two high quality
experiments, both of which represent significant achievements
within the Tesla coiling community.  It is satisfying to see these
well thought out experiments being performed to professional
standards.  Together, these two sets of results provide very strong
evidence that we now have a correct and quantitative understanding
of the operation of a Tesla secondary.
--
Paul Nicholson
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