Rotating Magnetic Field's and Inductors.

[tinman]

Seems that the claims being made here are in regards to higher efficiency when the rotor is installed, and an explanation was requested. Again, I've not seen one.

I may have missed it but I haven't seen anyone mention it.

Yes,you must have missed it.
Also,what why would a negative induced voltage across an open coil reduce P/in ?.

So I offered an explanation and asked for feedback. Apologies if the entire choir already has everything figured out, but it doesn't appear so to me.

The reduced P/in with the rotor is more to do with the induced flux into the inductors core,and not the induced negative voltage.

Not sure how you missed what my self and Verpies have been looking at.

Brad

[poynt99]

Yes,you must have missed it.
Also,what why would a negative induced voltage across an open coil reduce P/in ?.

I didn't mention "open coil". It would be an opposing induced voltage to the battery during the ON pulse. I know it appears as though there is a positive induced voltage during the ON pulse, but it may actually be opposing the battery.

The reduced P/in with the rotor is more to do with the induced flux into the inductors core,and not the induced negative voltage.

That does not make sense. In fact it is opposite to what happens. Are you thinking that the inductance, and hence impedance of the coil increases when the magnet is flying by? No, it would decrease.

[poynt99]

What are your thoughts Brad on trying a solid state version to achieve the same effect?

Have you thought about how you would go about doing it?

[tinman]

I didn't mention "open coil". It would be an opposing induced voltage to the battery during the ON pulse. I know it appears as though there is a positive induced voltage during the ON pulse, but it may actually be opposing the battery.

The scope across the coil says the induced EMF from the magnets has no effect on the peak voltage across the coil when the transistor switches on.

That does not make sense. In fact it is opposite to what happens. Are you thinking that the inductance, and hence impedance of the coil increases when the magnet is flying by? No, it would decrease.

That is actually incorrect.
The inductance rises when there is a changing flux value in the core of the inductor/ over time. Only when the flux value is constant,is there a reduction in the inductance value. As the magnetic flux is never a constant value in the core of the inductor when the rotor is in play,then the inductance value of the inductor is indeed higher than it would be without the rotor.


Brad

[tinman]

What are your thoughts Brad on trying a solid state version to achieve the same effect?

Have you thought about how you would go about doing it?

I would need another inductor that has a rising and falling magnetic field to mimic the magnetic field or the rotor,and that is of the opposite field to that of the main inductor. The timing would also have to be in advance to that of the main inductor,so as the electromagnet(second inductor) induces a changing magnetic flux into the core of the main inductor before the main inductor switches on.

If this showed the same effect as the rotor,then what would the outcome be?-in that the electromagnet would consume power,where as the permanent magnets on the rotor do not.\\

Brad