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Re: Fluke 27 (don't do it)

I'm sure all the pro's will now scream in horror about what I am about
to say but... what about replacing that certain fuse with a piece of
coathanger. An NST won't ever produce a damaging current will it ?
(unless you try to measure the current when the NST is connected in the
tank circuit)

Tesla List wrote:
> 
> Original Poster: "Ross Overstreet" <ross-o-at-mindspring-dot-com>
> 
> Sure, you can easily measure the output current of a NST with the fluke
> meter.  Life is good until for some reason the fuse in the meter blows.
> Then the Fluke becomes a sealed spark gap and the arc dances all over the
> board in its attempt to find the lowest impedance path between opposite ends
> of the fuse holder.
> 
> DON'T TRY IT.  Me and several of my buddies have felt the agony of defeat
> when using high priced test equipment around HV.
> 
> You can buy an inexpensive Radio Shack (or any other) 0-150VAC meter and
> convert it to a current meter with the addition of shunt resistors.  Check
> the archive for a post by Terry Fritz that describes how to do this.
> 
> Also, keep an eye out for small AC ammeters.  They can be found at surplus
> places, swap meets, ham fests, etc.
> 
> Happy Holidays,
> Ross Overstreet
> Huntington Beach, CA
> 
> -----Original Message-----
> From: Tesla List [mailto:tesla-at-pupman-dot-com]
> Sent: Thursday, December 23, 1999 10:51 AM
> To: tesla-at-pupman-dot-com
> Subject: Fluke 27 and Transformer Oil
> 
> Original Poster: "Nathan Ball" <nateburg-at-hotmail-dot-com>
> 
> Greetings!
> 
> I am Nathan Ball, 16 year old coil builder and new to the list.
> 
> I have a couple of questions:
> 
> I have access to the use of a Fluke 27 DMM and was wondering if there was a
> way I could use it to measure the output current on the 15/30 NSTs i
> rebuilt.  It says in the manual that the max input voltage for AC mA is
> 600V...
> 
> Also, I am building some new capacitors that will add up to 0.0265
> microfarad to match the new power supply of 15/150.
> 
> I built a 0.0053 uF cap before and used 8 sheets of LDPE between each plate.
>   I have since seen most people using at minimum 60 total mils and mostly
> aroun 80-90, but I have never had any problems running a 15/30 through it.
> 
> I think it may be because of the extremely pure transformer oil I got to put
> it in... but do you guys think 0.048 inches is enough for a 15/150?
> 
> Thanks in advance!
> 
> Nathan Ball
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