I have a question to you knowledgeable people out there.
Background: I had a broken LED torch laying about and i knew I could not fix it so have salvaged the parts from it. The torch worked from a group of button cells, or a hand powered dynamo. I know the basic principals of alternators and dynamos, but this one had me scratching my head.
Here are some pictures of it
The system works by spinning the magnet over the coil. As it is a round magnet with a hole in the middle, and does not pass through the coil, I am at a loss how this can generate power, because the conductor in the coil does not cut through the field of the magnet.
Is someone able to show me how this works and the principals of it, like the flux fields of a toroidal magnet, so I can understand better what is going on
Many thanks for your help on this as it is driving me crazy and I have so many ideas on things I could use this for.
BD