plcisgreat Member P Join Date May 2005 Location Norfolk,NE Posts 58 Nov 21, 2007 #1 Can you explain how angle grinders can produce 10000 rpm's and the purpose of the brushes?
kamenges Member K Join Date Nov 2002 Location Green Bay, WI Posts 4,332 Nov 21, 2007 #2 Angle grinders use universal motors. Take a look at the 'Universal Motor' section here for a quick description. Universal motors are similar to wound rotor series connected DC motors. This is where the high speed comes from. It also explains the brushes. Keith
Angle grinders use universal motors. Take a look at the 'Universal Motor' section here for a quick description. Universal motors are similar to wound rotor series connected DC motors. This is where the high speed comes from. It also explains the brushes. Keith
rsdoran Lifetime Supporting Member Join Date Apr 2002 Location Birmingham, AL Posts 7,371 Nov 21, 2007 #3 You can also get those RPM's from permanent magnet motors, want to make a simple one look at this: http://www.evilmadscientist.com/article.php/HomopolarMotor
You can also get those RPM's from permanent magnet motors, want to make a simple one look at this: http://www.evilmadscientist.com/article.php/HomopolarMotor