[Prev][Next][Index][Thread]

RE: Fluke 27 (don't do it)

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
______________________________________________________
Get Your Private, Free Email at http://www.hotmail-dot-com