Re: OBIT Test Problem (reformatted) (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 23 Oct 2007 00:08:52 EDT
From: Mddeming@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: OBIT Test Problem (reformatted) (fwd)

 
Hi Gary, All
 
    Before jumping to conclusions about the usefulness  of technique, I think 
I'll run the same kind of test on a couple of NSTs. As  Phil suggested, the 
VOM may be loading down the transformer, although 23 mA  into 60 K Ohms would 
seem to limit it to ~1400 Volts out, and it did read up to  6000. If the NSTs 
show the same behavior, then my next step would be to try a  few non-limited 
transformers, then build a big voltage divider and rerun the  tests. Oh well, 
it's only time and money.
 
Thanks, 
 
Matt D.
 
 
 
 
In a message dated 10/22/07 10:16:24 P.M. Eastern Daylight Time,  
tesla@xxxxxxxxxx writes:

---------- Forwarded message ----------
Date: Tue, 23 Oct 2007  01:12:24 +0000
From: "Lau, Gary" <Gary.Lau@xxxxxx>
To: 'Tesla  list' <tesla@xxxxxxxxxx>
Subject: RE: OBIT Test Problem (reformatted)  (fwd)

Wow, that's pretty whacky!  If I didn't know better, I'd  suspect that
quantum aetherdynamics was at play here.  Not only is the  Vo/Vi ratio
different for forward vs. reverse measurements, but the ratio  varies with
excitation voltage.  And stranger still, the ratio  increases with
increasing excitation voltage for forward testing, but the  ratio DECREASES
with increasing excitation voltage for reverse  testing.

Sorry, but I'm stumped.  I wonder if this behavior is  specific to
current-limited transformers?  But thank you, you've  certainly rewritten
the advice I would use and give to others trying to  measure an NST's
voltage!

Regards, Gary Lau
MA,  USA







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