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Re: s-s testing of Mag (was RESEARCH ON WHAT?)
<SNIP>
-----Original Message-----
>> Malcolm,
>>
>> How do I single shot the system? It is not an open system. All wiring
is
>> in plumbing and behind a lot of other neat scientific stuff The gap is
>> dangerously close to the system! It would not be a casual thing to do.
>> Peak voltage of 28.9 kV. I doubt that I would see more than 2 foot off
>> the resonator. All the max sparks from any system are a function of its
>> dynamic characteristics. Static conditions would never scale. Of this,
I
>> am absolutely certain.
>
>I agree that static conditions don't scale in terms of spark lengths
>under repetitive conditions. However, I see no reason why voltages
>wouldn't. Again, I am interested to know what proportion of total
>output voltage is produced by the resonator. I think it could be done
>and should be done. It would certainly be a reasonable test of Dr de
>Queiroz's modelling of the sec+extra system in my opinion. Anybody
>see any reason why not?
The voltage induced in the secondary of a mag will be -M (dI/dt) which is
not dependent on whether the system is single shot (s-s) or repetitively
pumped.
I wonder, though, if the Z which the extra-coil or resonator represents
might change under rep-rate conditions. The resonator voltage distribution
will change when repetitively driven and thus the complex feed point
impedance will change in phase/magnitude.
Thus I think the voltage seen at the output end of the resonator will
change when it is repetitively driven, but the voltage at the input to the
resonator will not vary (assuming that the source Z of the pri-sec
combination is low such that it looks like an ideal "stiff" voltage source
and is not significantly loaded by the resonator).
As a corollary to this: when the feedpoint impedance of the resonator
changes under rep-rate conditions (assuming no breakout which would end up
with the 220k/1pF per foot Z being transformed to its conjugate at the
feedpoint), and the pri-sec combination is not low enough Z (I'd assume a
5:1 or preferably 10:1 ratio would be needed), then the feedpoint voltage at
the resonator input may droop.
That's my understanding based on theory, but I have not yet built a
Magnifier so I welcome being flamed by those who have and have done the
measurements.
Cheers
Richard Craven, Malvern, England