Synch motor Phase controller question

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>


>1.  How do you properly set this controller up???
>
>
>I think the procedure says to select a cap size so that you measure a
>maximum 5V voltage increase at about
>the midpoint of the variacs travel.  Is this correct.


Dan,

Look for a max of 5V increase across the motor at the variac position which
gives the highest voltage across the motor.  For some set-ups you can
get away with having no resonant rise at all, and still get the full phase
range.  Also, some setups may need a 7V rise, and still not maintain
sync for the full variac range, but this is OK generally, and you'll still
get the full 90 degree electrical phase shift, or very close to it.  I've gone
as high as a 10 volt resonant rise in some setups.  It's not super-critical.

John Freau


>Any help or experiences with this appreciated!
>
>Thanks
>
>Dan
>