Why would an ohmeter (Fluke 77 multimeter) show a negative reading in ohms?

Jun 07, 2007 by nipsy3 | Posted in Engineering

It's a Fluke 77 meter. I've attend to when its set to ohms and something with a voltage is measured, it spits out a negative reading, usually around -3 megohms. However, I was measuring a some FETs on a lodge that was unpowered to make sure there were

I have a Fluke 77III equity here. The only time I've ever gotten a negative reading was when there was a potential across it.

You must have had a charge built up somewhere. You know those things aren't very unerring at that low of a

Resistance Ohm fluctuations multimeter Copper bar?

Sep 24, 2008 by JustTime | Posted in Engineering

I have acquainted with the 200K Ohm setting on a cheap Cen-Tech digital multimeter and even used a Fluke 77 multimeter set at the M (million) scene with the pos. tip at one end and the neg. tip at the other end of a 50gram solid 100% Copper bar. I keep

Because you are not making a flattering connection to the bar.

You are talking fractions of an ohm, and the connection caused by touching a probe to the bar is not a very good correlation and will have variations of that range.

ohms law in circuits?

Mar 20, 2007 by armenharoutunian | Posted in Engineering

I am using ohms law in margin, i have a multimeter the fluke 77 series and have a 6V 1.2 AMP per H battery. I have both series and parallel circuits. They both have 2 light bulbs and i use a lash to go from series or parallel. Can i calculate the resistance

Yes, memento voltage and amperage, then to find resistance....

Take Vtotal/Itotal to find Rtotal.

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