Speaker and voice coil motors

[nightlife]

I am not sure if these links have been posted so I thought I would start a topic about them.

This first link will direct you to pictures and a video of Scotty's Speaker Motor Replication.

http://leedskalnin.com/speakermotor.html

This next link will direct you to the Kundel Motor which shows pictures and videos as well as uit explains how it works.

http://www.kundelmagnetics.com/

[Low-Q]

I am not sure if these links have been posted so I thought I would start a topic about them.

This first link will direct you to pictures and a video of Scotty's Speaker Motor Replication.

http://leedskalnin.com/speakermotor.html

This next link will direct you to the Kundel Motor which shows pictures and videos as well as uit explains how it works.

http://www.kundelmagnetics.com/

The power output from a speaker motor is extremely low compared to the power input. So I don't understand wht they are using speaker motors. I'll read more about this in the links. It's an interesting approach to OU, but I also think it's as far away from OU as it possibly can be

Vidar

[nightlife]

Low-Q, I see a few ways that are not utilized in those pictures to create the sound and also to create electricity.

The wheels on the shafts could be used to create sound and the main shaft could be made of copper and or have copper wire fitted in to it so that when the magnets slide back and forth they would create electricity.