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Re: That secondary behaviour, E-Tesla5, and Corum's thing...

Hi Ken,

At 05:58 PM 04/13/2000 -0700, you wrote:
snip...
>
>See my posting of yesterday about the experiment I did.  I don't fathom
>what is meant, in the above & in postings on other occasions, by "slow": 
>I see on my scope screen a) a short sine-wave burst from my sig. gen.
>applied to my secondary's bottom end (at resonance or elsewhere) and b)
>the voltage at the top end via a 10:1 probe.  At the beginning of the 1st
>cycle at the bottom, the voltage at the top starts to rise immediately. 

I now see that you post of yesterday has the tabulation messed up :-(
Sometimes tabs don't go through all the Tesla list's servers intact.  Sorry
bout that.  Your results got chewed up pretty badly.  Perhaps you can try
to resend.

>At the instant when the 1st 1/4 cycle of the exciting wave passes thru
>zero, the 1st 1/4 cycle of the top signal has risen & is at its peak;
>that is, already, the top signal is dead-on at -90 deg. phase shift (as
>close as I can see it on Tek 7904, where I can expand that 1st 1/4 cycle
>to 2 cm of screen or more)--and it remains at that phase forevermore
>(until the end of the burst, that is). 

Interesting!  I don't have a burst generator so I can't quite check this at
the moment.  Perhaps I can rig something up.  Do you think that your scope
probes (the one higher on the coil could have caused loading that affect
the measurements?

>
>Now, I suppose one could say that the >voltage rise< of the top voltage
>is "slow"--but that's just the phenomenon you would expect where you are
>exciting an LC circuit, at resonance or wherever.  I see no difference in
>the behavior I describe either at or away from resonance; it's just that,
>at resonance, the top voltage keeps going up & up for a while. 

Disruptive coils usually "do their thing" in a relatively few cycles.
Perhaps the ring up of secondary coils needs to be examined more to help
solve this lumped, distributed, transmission line thing.  I think you are
dong really important stuff here.  You sort of have your finger on the data!

Did you see that the phase started out at zero and then shifted to 90
degrees or was it always a constant 90 degrees throughout the burst?

Cheers,

	Terry

>
>So, what else is "slow"?  Is it >I< who am slow, or what?
>
>Ken Herrick
>