Re: Testing NST with an auto-ranging meter

["R.E.Burnett" <R.E.Burnett-at-xxxxxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

Very high inductances confuse my Tek meter also.

Short the primary connections of the transformer together when measuring
the secondary resistance.  This kills most of the inductance in the
secondary and the meter is then able to "auto-range" successfuly.
							-Richie,

On Mon, 13 Nov 2000, Tesla list wrote:

> Original poster: "Seth Fischer" <aureo-at-xtra.co.nz> 
> 
> I have a second hand 15/30 NST
> 
> Both have a primary resistance of 3.0 Ohms.
> 
> Each output terminal to case is 8.0k Ohm.
> 
> But when I try to measure the output resistance, terminal to terminal my
> Fluke 77 digital meter can't select the correct range I must manually
> set the range to k Ohm to get a reading of 16k Ohm.
> 
> Anyone know why?
> 
> 
> 
> I think my other NST I bought is dead 8.0k Ohm terminal to case and o/c
> the other terminal to case. Is it usual for only one winding blow? I
> can't get the cover off because black stuff has oozed out.
> 
> I guess I'm safe to ask for a replacement.
> 
> 
> Thanks,
> Seth Fischer
> 
> 
> 
>