Spinning magnets with radio waves.

[Pirate88179]

http://www.youtube.com/watch?v=hm8Vpxv4Ydw

Here is one of alfacentauro1111's videos I remember.  That sphere is really cranking.

Bill

[synchro1]

Well, my power input isn't that small.... the F43 is a powerful FG and I have it cranked right up.  I'm uploading a video right now showing some input power measurements.....

The surprising thing is this: I spin the magnet up to the test frequency and show the scope traces from current and voltage input. Then I stick my finger into the motor to stop the magnet. FG setting isn't changed. The spinner draws _more power_ when the magnet isn't spinning.

Think about that one for a while. I think this is the same kind of evidence (sic) that Steorn used in their initial claim of OU performance in their electric Orbo motor.

Video is still uploading but will be at
http://youtu.be/hdqiUOKLTVs
when it's done, probably in an hour or so.

@TK,

You mention in your new video that the coils draw more power when the magnet's not spinning. What happens to the power the spinning magnet generates in the power coils? You state "The spinning magnet is reducing power input to the system". Your rotor's at around 9k r.p.m. What do you imagine might begin to happen at around 25k r.p.m.? You heard me describe my inscrutable experience of sudden burst of acceleration, and apparent disappearance of input draw altogether.  I've had trouble explaining this: The inverse power to speed ratio ultimately results in maximum speed and zero amp draw, and a "Self Powering effect"! Thank you for confirming this relationship between increased speed and decreased amp draw.

[TinselKoala]

That's kind of scary....

I am just thinking... it's a good thing I +don't+ have a sphere magnet on hand, I'd probably hurt myself. Spin that sucker so fast the nickel plating comes spalling off, a microsecond before it totally disintegrates and sets the house on fire.

[TinselKoala]

You mention the coils draw more power when the magnet's not spinning. What happens to the power the spinning magnet generates in the power coils?

I suppose it's dissipated as heat. The waveform when it's driven by the square wave at speed is very interesting, showing a 20 v spike from the drive signal and a nice sinusoid at about 2 volts p-p that is the magnet's participation.

I really don't think this is the same thing as the increase in power that is seen when a commutated DC motor's armature is "stalled". Nor do I think that this motor's RPM is limited by CEMF the way a conventional DC motor is.

[synchro1]

TinselKoala breaking speed record, 19,800  r.p.m: Getting dangerous!

http://www.youtube.com/watch?v=XgMrYPax5dE