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Coherence Terminology and Theory
Some of the discussion about 'coherence', 'beating' and 'decrement' in
Malcom and Richard's threads still eludes me. If they are defined in the
archives, I have missed it somehow. Would someone please give a brief
description or URL defining these terms and their related theory ?
Also, a question, perhaps related. A pair of resonators exhibit a double
tuned response when overcoupled. It seems to me that the 'beat' frequency
between the response peaks would equal the rate at which an applied energy
pulse 'sloshes' back and forth between the resonators. If so, optimum
coupling would be strongly related to quenching. Am I on the right track,
and is this related to the previous question ?
Will
<snip>
> I have noted a "resonator fill time" associated with the H2 thyratron
> circuits -on my scope. I have heard the Corums lecture on this and I
> might assume this the the coherence interval.
>
> It only occurs when there is zero swapping of energy back to the primary
> (half cycle cut off - as in the H2 Thyratrons.)
>
> This last weekend at the Teslathon here in Richmond, Dr. Mark Rzesotarski
> & I noted it again with Mark's antenna setup modeled after Terry Fritz
> suggestions. It is a nearly full cycle lag. as the resonator builds to a
> maximum voltge output.
>
> In these systems the primary has no tuning effect at all as I have noted
> before. Also, the decrement is slow and extends over about 50
> oscillations with the big toroid on it. A lot of the coil Q is realized.
> In addition, a lot of the initial energy is wasted without the beating.
>
> Richard Hull, TCBOR
>
>