> >> talking about a stator mounted on a engine's flywheel: > >> In other words, how do output watts vary with varying rotational speed= , > >> assuming no losses, saturation, etc..? > > > > > >Current will increase approximately linearly with speed up until > >saturation and then be relatively constant. Voltage will tend to keep > >increasing ~linearly with speed throughout. > > Thanks. May we assume the max current from inductance (67 mH) and > resistance (18 Ohm) of the stator, and RPM? Of course it will be > an estimate, as we know nothing about the magnets in the flywheel. > But I can assume it was designed decently (it's a motorbike's CDI > generator). Maximum current is saturation limited ans is usually less than the system would produce if it did not saturate, so, no, you can't determine maximum current it will produce. You can determine the maximum it won't produce :-) - from I =3D V/R. It will be saturation limited before that point. Russell. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .