Re: multimeter question

From: James Sweet (jamessweet_at_hotmail.com)
Date: 12/19/04 

Date: Sun, 19 Dec 2004 20:34:38 GMT

"slight" <fearless@hotmail.com> wrote in message
news:41C58A49.3010406@hotmail.com...
> an example would be measuring a 10k resistor in-circuit.
> by reversing the lead polarity i get two readings, 10k and 5.8k.
> im guessing that is because the meters i have use 3.3v across the leads
> and this is triggering a diode or something in the circuit.
> are all meters like this? the ones i have are pretty cheap.
> do the flukes do this? been looking at one for Christmas.
>

If there's a capacitor in the circuit it can be charged by the ohm meter and
give a false reading when the leads are reversed. You can often get a
ballpark reading in circuit, but you have to remove a resistor at least at
one end to get an accurate reading.

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