Re: Ammeter Question

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: tesla <tesla-at-paradise-dot-net.nz> 

Hi Aaron

Can't actually tell you where to find one at the moment but a practical
approach is to find one of the 5 amp basic movement 90 degree quadrant
moving Iron ammeters and shunt it up to required current.

I use shunts made from mu metal personally. You need a shunt with lots of
surface area to keep it from getting too hot and running into temp coeff
problems.
These quadrant meters are pretty common and the amp meters arte mostly 5amp
for use with current transformers although the meter scale can be calibrated
to other readings
Alomost any of the surplus supply companies in the USA are likely to have
these meters. MUST be moving iron type symbol as I recall is a solenoid on
the front of the scale

Best
Ted L in NZ
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, January 11, 2004 7:54 PM
Subject: Ammeter Question


 > Original poster: "Aaron Aab" <striker754-at-earthlink-dot-net>
 >
 > Where can I find an AC ammeter to go inline with my hot power supply? I
 > would like to be able to measure the amps the transformers are drawing.
 >
 >
 >