Re: Tiny motor

From: Joerg (notthisjoergsch_at_removethispacbell.net)
Date: 03/12/05 

Date: Sat, 12 Mar 2005 00:28:38 GMT

Hello Robert,

> Price is "always" an issue.
> The Maxon EC series looks very interesting. Small, low power,
> and high speed. Maxon doesn't say much about driving them however.
> Probably rather sell the controller. It looks like I would have to
> generate a 3-phase...pulsed DC? Where can I find info on driving
> them?

They should help you with that.

Three-phase isn't hard to do. A shift register and a clock is one
option. If you have a micro controller anyway and three free pins and a
free timer you could have it do the control. But only some uC have
enough compare registers for three-phase so the external solution is
more likely. Then you'd have to shape the outputs and overlaps into
whatever the motor wants (info that should be provided by the mfg).

Regards, Joerg

http://www.analogconsultants.com

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