Shorting coil gives back more power

[popolibero]

GK, I have the Kunel patent and the Intalek docs, thanks. Good stuff.

Bolt, that's what I thought, the single magnet plus coil pull the BW to the right, but I thought the BW would sit on the left hand side of the coil (when not energized), closer to the stronger magnet pack?

[giantkiller]

This is why Sauron posted the little video coils.

Bottom photo oil pump assembly. If you look close at top centre is some coils he is using now for power generation. It looks no more then about 150 turns of about 24 awg hardly changed from devices shown years ago. This gives you a good heads up and how you should replicate.

[bolt]

GK, I have the Kunel patent and the Intalek docs, thanks. Good stuff.

Bolt, that's what I thought, the single magnet plus coil pull the BW to the right, but I thought the BW would sit on the left hand side of the coil (when not energized), closer to the stronger magnet pack?

Bloch wall wont move far perhaps 1/8th of inch when pulsed but the magnetic flux from those neos on collapse has a pull force of perhaps  >100 pound on the air gap. You can lose fingers in those neos they are not toys.

Now pulse this at 50,000 times a second you got one hell of a powerful generator. To do this mechanically would need some first class machinery to get tight 1/16th air gap and handle impossible fast rotor speeds.

[giantkiller]

Coil excitation plus Dr. Stiffler setups.
http://www.youtube.com/watch?v=W5akYnh2fjM

[Feynman]

@bolt

Great post, thanks for the photos.

You write,

In its most simple form the low power version of about 150 watts has a 2 fet o/p stage is little more than a 50Khz inverter driving a small solenoid size coil with 3 neos one end and 1 the other.

Can someone post a schematic, photos, or any other sort of documentation on  this for a starting bench replication?   Or links to the place to look? etc

Thanks