Negative Inductance and measure of Magnetic force.

[sm0ky2]

@smOky2,

The meter is not measuring a reverse current it's measuring the presence of magnetic energy.

It is measurzing the voltage and current, from a dc-to-ac converter
and making a calculation based on the phase angle and corresponding impedance.


It cannot make any distinction between the true inductance and the capacitive aspect.
Nor can it display the actual effects of applied magnetism.

I didn't say it was measuring a reverse current, I said if there was really a negative
inductance, it would be INDUCING a reverse current.
(which would support your claims about the readings, but may be outside the capabilities of your meter)


You could ignore this information and continue to delude yourself...
Or you could make an effort to make accurate measurements.
The choice is ultimately yours to make.


A matched LCR bridge circuit can give you accurate readings
however, these will fail in the case of true negative inductance.
For this you have to also include the circuit above (or equivalent)
with the bridge.

[synchro1]

It is measurzing the voltage and current, from a dc-to-ac converter
and making a calculation based on the phase angle and corresponding impedance.


It cannot make any distinction between the true inductance and the capacitive aspect.
Nor can it display the actual effects of applied magnetism.

I didn't say it was measuring a reverse current, I said if there was really a negative
inductance, it would be INDUCING a reverse current.
(which would support your claims about the readings, but may be outside the capabilities of your meter)


You could ignore this information and continue to delude yourself...
Or you could make an effort to make accurate measurements.
The choice is ultimately yours to make.


A matched LCR bridge circuit can give you accurate readings
however, these will fail in the case of true negative inductance.
For this you have to also include the circuit above (or equivalent)
with the bridge.

@smOky2,


This is the first time anyone has offered an alternative explanation to my theory that makes sense.

[synchro1]

@smOky2,

Why do you feel the negative inductance reading is cascading in the bifilar when it stays unchanged in the single wire?

[synchro1]

@smOky2,

What's the definition of a Henry of Inductance? 

[synchro1]

@smOky2,

I'm willing to accept your explanation only so far because if you look at this quote below, perhaps you can tell me what you think the author's talking about when he states that "the inductance will measure as a negative inductance when the meter is set to measure inductance"? The author is implying that the negative inductance measure is as reliable as a positive capacitance measure.

"Above that frequency, if the meter is still set to measure inductance, it will measure as a negative inductance. If the meter setting is changed to measure capacitance, then it will measure a positive capacitance". Mar 30, 2004


The author is referring to the NIC Op Amp negative inductance circuit you posted.