[ARC5] Low Low Ohmeter

Dennis Monticelli dennis.monticelli at gmail.com
Thu Jan 16 13:06:34 EST 2020


Just make your own Kelvin four-point ohmmeter.  Pass some serious current
(say 1A) through the thing you're measuring and connect a voltmeter *inside
of* the atttached points of entry and exit of the current.  If 1A then each
mV equals one milliohm.

Dennis AE6C

On Thu, Jan 16, 2020 at 9:56 AM Robert Eleazer <releazer at earthlink.net>
wrote:

> Recently I did some work on my airplane and struggled with measuring some
> resistances.  For example, a max of 0.1 ohms is Okay for one test while 3
> ohms is not.
>
> I recall an article I think was in a ham magazine many years ago about how
> to build a Low Low Ohmmeter, designed to measure very low resistances.  Any
> of y'all recall that?
>
> Thanks!
>
> Wayne
> WB5WSV
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