In reply to Esa Ruoho's message of Tue, 29 Mar 2011 21:18:21 +0300: Hi, [snip] >They spent a load of time trying to >figure out what they were measuring wrong and eventually realized that they >were actually cancelling BackEMF - which seems to be some sort of friction >which is accepted as a "must-always-happen"-type event by regular Electrical >Engineers.
Back EMF is your friend. It's what makes electric motors efficient. The more back EMF the better. By preference it should exceed the forward EMF, then you really have OU! Trying to get rid of it is ludicrous. All that achieves is a dead short. No wonder they have so much heat. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/Project.html
