You may be right. I briefly considered this but the circuit I had
breadboarded did'nt work that way. Since it does'nt work right now I need to
revise it anyway. In the event that there is no common ground what do you
think the waveforms are that it needs to be supplied with?

> Are you sure these coils need to be grounded ? I briefly looked at a
> something similar in a HDD and thought they were arranged as a
> non-grounded triangle.
>
> Jinx
>
> >Also I couldn't find a ground return for the 3 coils so I just made one
>  Thanks - Keith Causey.
> >