Re: Coupling Questions & coil measurements

To: tesla-at-pupman-dot-com
Subject: Re: Coupling Questions & coil measurements
From: "Robert Jones" <alwynj48-at-earthlink-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Wed, 18 Aug 1999 06:27:50 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi all,

I have been reading the postings on this subject and I now think I
understand the significance of coupling and quench.

I good analogy of the system is two identical pendulums attached to the
centre of a horizontal line but separated by a small distance.  If one
pendulum is set swinging across the line, the amplitude of the other starts
at zero then gradually increases as the amplitude of the first pendulum
decreases to zero. Then the opposite happens.  The  energy repeatedly
oscillates from one pendulum to the other.  The equivalent of quench is
presumable when the first pendulum stops moving it is clamped and hence the
second pendulum is forced to continue to swing.  I believe I saw this effect
demonstrated on a OU program on UK TV.

How is the quench arranged to occur at the right time.

I have tried to derive the Laplace transform equations but it is tricky.
Does some one have a Mathcad file with them in.  I have a Mathcad file some
where that determines the best coil configuration for a high power RF tuned
circuit.  I should be able to use some of the equation to define the Q of a
Tesla primary and secondary.

Regards

Alwyn Jones (Orlando Fl)