Dead Electrical
"Ralph Mowery" wrote in message
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"Snuffy "Hub Cap" McKinney" Snuffy-Hub-Cap@Livebait-
This meter was one of the extra high quality super accurate types that
Harbor Freight gives away free! :O)
I have several of them. They are not too bad. I checked them using a
Fluke that was verified by a standard at work that was tracable to the
NIST.
There is an adjustment inside them if you want to calibrate a certain
scale.
My first ever DMM came out the bin where I worked at the time, resistance
and ACV ranges were dead.
Inside was an LSI chip and a socketed dual op-amp - nothing to lose, I tried
changing the op-amp.
There was a preset pot on the board, so with the missing ranges restored, I
was able to borrow a traceable certificate instrument to set it up by.
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