I didn't catch the 4" portion. If so, you are correct. Unless there is some kind of thermocouple in the circuit... Andy Dwayne Reid on 04/14/2000 01:49:57 PM Please respond to pic microcontroller discussion list To: PICLIST@MITVMA.MIT.EDU cc: (bcc: Andrew Kunz/TDI_NOTES) Subject: Re: Air powered electronics [OT] At 11:56 AM 4/14/00 -0400, Andrew Kunz wrote: >Carl, > >Why don't you explain it. > >Last time I checked, moving a magnetic field with a coil in it generated >electricity. Didn't matter if the magnets were moving or the coil. > >Nobody said he needed to use all the poles, or that the muffin fan had to be >unchanged. > >Or maybe you know something about electricity generation that has been hidden >from the eyes of the power companies. > >I'm really curious to know why a brushless motor (sans the commutation >electronics) won't generate volts. If that's so, I will have to recall some >products because they suddenly won't work any more. > >Andy The problem is: many brushless motors DON'T have permanent magnets. I recall the original poster mentioning a 4" muffin fan - these are generally 120 or 240 Vac shaded pole motors - no permanent magnets. Other posters have talked about smaller DC fans - these DO have permanent magnets. As I see it - both sides of the argument are right because they are talking about different things. dwayne Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 16 years of Engineering Innovation (1984 - 2000) * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email.