On 28 September 2017 at 19:17, ed breya <e...@telight.com> wrote: > Hmm. Alternating the direction of the current repeatedly and processing > the results - sure seems like that is fundamentally an AC measurement too, > despite using DC measurement equipment. > > Ed
I guess the point is current/voltage can be measured accurately before the direction is changed, whereas that's less so with AC. But I don't need great accuracy in trying to sort out if there are contact resistance problems caused by things such as copper slip, or aluminum oxides. I need to measure very low resistances, but not with great accuracy. For me at least, I have no Fluke 5520A, or low resistance meter. The Agilent programmable DC power supplies I have are not designed for precision measurements. But the lock-in amplifier I already had, and the audio amplifier was cheap. Sometimes you have to make do with what you have, or can justify buying. Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
