----- Original Message -----
From: "Denny Esterline" <firmware@TDS.NET>


> Well, thinking about it, you have three wires in a classic "delta" config,
> like so:
>
>          A
>         / \
>        /   \
>    2 ohms   2 ohms
>      /       \
>     /         \
>    B--2 Ohms --C
>
> That's what I'd expect to see for a three phase brushless, the other wires
> make me wonder though...
>

I've never used 3 phase brushless DC motors.  Do they have the same "step"
feel to the shaft when you spin it as steppers do?  On this motor when I
spin the shaft manually it jerks about every 3-5 degrees just like other
stepper motors I've used.

> Are all the wires the same size (diameter)? What kind of plug on the wire
> (if any)? I'm thinking that if you can tell that some were meant to carry
> more current than the others... Maybe the other 6 wires are for somthing
> else.

The wires are all the same size, and pretty small gauge - I'd estimate about
18-20 ga. solid hookup wire.  They come out of the motor in parallel and go
into a 10 pin (2 rows of 5 columns) female connector.  The back of the motor
has a "Nidec" sticker on it, with the following inscription.
        44F5098007
        LOT 50802
        P/N21239-101


I don't have any other specs about it, as no datasheet was supplied when I
bought it surplus.


> Do you have any other specs for the motor? Volts? Amps? Manufacturer info?
>

Nope, but I can give a quick physical description... It's about 1.75" in
diameter and <1" tall.  It looks exactly like any ordinary run of the mill
small stepper except for those extra wires.  It has a pulley on the shaft,
indicating it was probably intended for use as a belt drive mechanism.
>
> -Denny

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads