My bicycle trainer uses an eddy current brake; there are no wires anywhere in the load; just a ventilated disk and a magnet that I can move closer or further away from the disk by turning an adjustment dial.
D > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Rob Butts > Sent: Saturday, March 27, 2010 4:29 PM > To: gEDA user mailing list > Subject: gEDA-user: Magnetic bike operation > > I'm having a debate with an ee friend about how the magnetic > resistance works on an excersice bike. > > It occurred to me this would be the best place to solve it. > > Does anyone know if it is simply an electro-magnet close to a > metal wheel where the stronger the magnetic field the > stronger the resistance? Or is it alternating magnets in a > flywheel type configuration with a toriodal coil surrounding > the flywheel and a variable resistance in the coil circuit > resists the induced current providing the resistance to user > who would be spinning the flywheel? (Sorry if I didn't > describe that well). > > Or is it something completely different? > > Thanks > _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
