I saw your entry concerning eddy currents. I was hoping you could answer a question. I am not a scientist or electrical engineer, but I do have some rudimentary education in EE and electrical systems. My question concerns an eddy current braking (ECB) or resistance system used in an elliptical cross trainer fitness machines. Specifically, will an elliptical machine with and ECB designed for use on 220V/50Hz electrical systems (Europe and Australia) function on the US 110V/60Hz electrical system and vice-a versa? I know that electrical motors can not be used on differing frequencies (e.g. a motor designed for 50Hz will burn up if used on 60Hz power - same for 60Hz motors used on 50Hz power). Are ECB systems similar in this respect to electrical motors? I am afraid to test this as it could be an expensive experiment on my elliptical trainer...I have inadvertently burned up some electrical appliances, forgetting the motors were wound for 60Hz and using them on 50Hz. Thanks and look forward to your response! Jwachee (talk) 01:39, 1 May 2010 (UTC)