Re: OBIT Test Problem (reformatted) (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 22 Oct 2007 23:34:20 EDT
From: Mddeming@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: OBIT Test Problem (reformatted) (fwd)

 
In a message dated 10/22/07 10:07:28 P.M. Eastern Daylight Time,  
tesla@xxxxxxxxxx writes:


---------- Forwarded message ----------
Date: Mon, 22 Oct 2007  18:21:59 -0400
From: David Speck <Dave@xxxxxxxxxxxxxxxx>
To: Tesla  list <tesla@xxxxxxxxxx>
Subject: Re: OBIT Test Problem (reformatted)  (fwd)

Matt,

I had a similar problem a couple of years ago when  trying to figure out 
the windings of a high current transformer from a  band saw blade 
welder.  I got readings that were all over the map,  and often 
inconsistent from one application of the test leads to the  next.

I solved the problem by applying a 1K ohm power resistor across  the 
meter terminals.  It seems that the high impedance  digital  meter was 
sensing all kinds of transients off the line and giving false  readings.

HTH,

Dave




Hi Dave,
 
The 630 A is not a DMM. It's a VOM older than a majority of the list  members 
and as such is impervious to all kinds of transients.
 
Matt D..
 
 
Matt D.



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