Tim Williams wrote:
"Watson A.Name - 'Watt Sun'" wrote in message
.. .

As for "Inaccurate, because the resistor will warm up and the
resistance will increase", you could have the same problem if you were
measuring a resistor with a DMM, and the equipmewnt with the resistor
had been powered on before you did the measurement. The resistor
could already be hot.


And besides that, it measures actual in-circuit conditions, because a
resistor is *supposed* to get hot, at least if it's doing its job...

Excellent point. If you adjust the voltage (and current) to the same as
the V (and current) in circuit, then your measurement reflects a more
realistic value of resistance.

And another thought. If you are trying to ferret out an intermittent
problem, then subjecting the resistor to similar V and I conditions
found in the circuit can help make the problem appear, so it an be
isolated to a certain component.

Tim (can't believe the number of negative replies on this thread)

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