On Tuesday, April 16, 2002, at 03:35 PM, the pickle wrote:
> Mebbe, but I think the spindle motors are usually some sort of mutant
> combination of stepper motor and normal motor. I've never been able to
> get
> them to spin with simple DC application but I might have been doing
> something wrong...
Yes, I think they are. they are flat coil vs. magnet steppers, similar
to those in a VCR. It's virtually impossible to drive them by DC voltage
as you have to engergize each coil in turn. Using pins sticking out of
the plug on one from a dead Rodime I did manage to get 2 rotations out
of it, really older ones just need some kind of timed stepper circuitry
to get the coils going in the right order. The timing circuits have to
be fast and accurate too if your going to get them up to full speed.
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