Thane Heins Perepiteia.

[Groundloop]

@All,

Just want to say that tests done on MY pulse motor gives the oposite result as stated by DMBoss!

When I run my rotor and put a unshorted (open) coil (with a ferrite core) up to the spinning rotor then
the RPM stays almost the same. When I short the coil and put it up to the rotor the RPM is going DOWN!
A shorted coil is a break for the rotor.

Groundloop.

[Harvey]

I think its important to understand here that if Mr. Heins were to short the coils through a resistive load, the energy would be dissipated in the resistor and not be available for magnetic coupling back to the motor.

The question everyone should be asking themselves is: "If the energy is available when the magnetic coupling is in place, what happens to it when the coupling is removed?"

What Mr. Heins is doing is showing us an inefficiency in our current technology where losses occur that could be recouped and utilized in other ways.

[Harvey]

@All,

Just want to say that tests done on MY pulse motor gives the oposite result as stated by DMBoss!

When I run my rotor and put a unshorted (open) coil (with a ferrite core) up to the spinning rotor then
the RPM stays almost the same. When I short the coil and put it up to the rotor the RPM is going DOWN!
A shorted coil is a break for the rotor.

Groundloop.

Try and place a magnetic pathway back to the spindle of your pulse motor. The flux induced in your handheld coil must have somewhere to go.

[EMdevices]

Speaking of Perepiteia,Ã,  Ã, or something opposite taking place than what is intended,Ã,  I remember a phenomena simular to Hein's accelerating motor,Ã,  and I'm wondering if perhaps it's not the same thing.

A few years ago I was taking an engineering class dealing with electric machines (motors, generators, transformers, etc..),Ã,  and in the lab, the professor showed us what happens if you think you will stop a motor by cutting the current to the rotor field coils but leaving the stator coils powered up.Ã,  (I think we were dealing with an AC synchronous motor, where the rotor tracks the rotating field with no slip, but it might have been something else like a DC type of motor running with AC)Ã, Ã,  Common sense would tell us that if we decrease the magnetic field, the motor would have less torque (which normaly depends on the magnetic flux strength) and eventualy slow down some more.Ã,  Well that's not exactly what happens, and what happens can be quite dangerous and even kill.Ã,  Ã,  The motor accelerated like a demon, and the professor quickly cut the power to the other set of coils and explained that you will have a catastrophic event if you make this mistake.Ã,  The motor speeds up so fast it will fly apart and kill people in it's blasting range.Ã,   so YOU DON'T CUT THE POWER TO JUST ONE SET OF COILS BUT TO BOTH COILS. Ã,  Ã, I don't remember much from that class, but this stuck in my memory as something odd and counterintuitive.

So why is it couterintuitive?Ã,  Ã, I believe at face value we don't think in terms of torque curves for the motor, but with modeling equations you can show how the torque curve gets modified when the flux drops in the rotor.Ã,  From the torque curves it becomes apparent that the steady state speed (equilibrium point) has just moved higher in RPM.

So, I believe Mr Heins might be dealing with this phenomena.Ã,  It's not a new physics phenomena, but an engineering or system effect.Ã,  That's why some of these profesors are also amazed.Ã,  They are experts in a very specific domain, but they can be quite ignorant in other areas.Ã,  I see that in myself as well.

EM

[Harvey]

Ever listen to vacuum cleaner when the hose gets plugged?

Or, have you ever taken the output of a fan and routed it back to the input?

How an apparent load interacts with the source can often have unexpected results.