mcguire at neurotica.com
Tue Sep 21 09:17:41 CDT 2010
On 9/20/10 8:02 PM, Shoppa, Tim wrote:
> At the very low end, in the $3 to $5 range there are "disposable" DMM's available at discount stores here in the US. They are not a joy to use but they do mostly work.
I've evaluated five or six of these. The accuracy and stability of
these things, especially in the face of temperature variations, is utter
crap. Don't ever adjust a +5V supply in a PDP-11 using one of these. ;)
Some of these were tested as being 15% off, measuring nearly six volts
from a (very tightly calibrated) 5V supply!
Buying cheap multimeters (or any other tool, really) is a false
economy. My daily-use handheld DMM is an original Fluke 77 (no suffix)
that I stole from work so long ago that I don't mind mentioning it here.
;) I've had it for almost twenty years, and it was well-used when I got
it. It works as if it were brand new.
Port Charlotte, FL
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