Hi there,
Similar to my other post, I also have an Agilent U1731C LCR meter which I want to use to measure the winding resistance of a permanent magnet generator. I've already checked the resistance using another clamp meter and know it is ~5.4ohm.
When I measure it with the U1731C (on resistance mode) the value of resistance seems to depend upon the measurement frequency (and is always greater than the actual resistance). Furthermore, when I move the generator to a new static position (thereby changing the magnetic field) the resistance value also changes.
What am I doing wrong?
Thanks,
Alan.
ps - please see my other post
Similar to my other post, I also have an Agilent U1731C LCR meter which I want to use to measure the winding resistance of a permanent magnet generator. I've already checked the resistance using another clamp meter and know it is ~5.4ohm.
When I measure it with the U1731C (on resistance mode) the value of resistance seems to depend upon the measurement frequency (and is always greater than the actual resistance). Furthermore, when I move the generator to a new static position (thereby changing the magnetic field) the resistance value also changes.
What am I doing wrong?
Thanks,
Alan.
ps - please see my other post
Not understanding what an LCR meter does.
An LCR meter measures the complex impedance of a two terminal network then calculates and displays the values of perfect L and R or C and R which in a series or parallel circuit would produce the same complex impedance at that frequency.
The equivalent circuit resistance is only the same as the network dc resistance when the reactive components in the network are perfect or small enough to be insignificant.