Re: higher current ammeter sources

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

"David,

Just make your own from a lower range meter and a home-made shunt.  You
can
use a length of copper or iron wire or strap and keep reducing the
length of
it, shunted across the meter, until your full scale reading is what you
need.  For example, for a 0 to 100 amp meter, it is best to use a 0 to 1
or
0 to 10 amp meter with a shunt to make reading the actual value from the
meter scale easier (x10 or x100).  You can also buy meter shunts from
some
electronic distributors.
--Steve Y."

	A current transformer would be a much better idea and should be very
easy to make from any small transformer.  You could set the ratio as you
wanted and since the turns ratio will be an integer it won't take much
fooling around.  2:1 current ratio = 2 (meter side) to 1 (current side),
etc.

Ed