Re: [CAD_CAM_EDM_DRO] unknown motor

From: "Jon Elson" <elson@...>

>
> Brush motors use a commutator and brushes to turn around the
> current in the windings of the armature after they have passed a pole.
> These motors may have fixed permanent magnetic poles, but
> the armature windings rotate.
> Brushless motors use an electronic circuit to turn the current around.
> Some have sensors, usually Hall effect, that sense the position
> of the magnets. In these motors, the windings are fixed, and permanent
> magnets in the rotor spin. The advantage is theres no electrical
> connection needed to the moving parts, greatly increasing reliability.
> Some brushless motors, like in computer fans, have the electronics
> inside the motor. Many brushless motors in other application for
> positioning, driving laser printers and copiers, etc. have the electronics
> separate, on the device control circuit boards, instead of the motor.
> These motors have at least 3 wires, sometimes as many as 8
> (3 motor, 2 power to the hall sensors, and 3 position sense signals).
> There are lots of these motors in floppy and hard drives.

Thanks for the info.
I actually learned something.
So, what I've got is a kinda kewl motor that I have no real need for right
now, huh?

Oh well, we'll just put it over here on the shelf...

Weyland