"Greg Mayman" bravely wrote to "Mike Ross" (07 Sep 03  08:21:00)
 --- on the heady topic of "VEHICLE LED'S"

 -=> Mike Ross said to Greg Mayman
 -=> about "VEHICLE LED'S" on 09-03-03  21:53.....

 MR> It couldn't have dragged too much if no power was being consumed. How

 GM> When you spun the wheel with it off the ground, it stopped a fair
 GM> while sooner than a similar wheel without the dynamo. Probably
 GM> due to hysteresis in the magnetic circuits.

It wouldn't be the hysteresis but the permanent magnetizing flux. For
example the iron pole pieces line up with the permanent magnet poles and
it take a certain amount of force to turn the rotor to a position
inbetween, then it snaps back lined up with a pole.

 Mike
 ****

... Reactance: your imaginary friend.
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