alt.energy.homepower

"Steve Young" wrote
> Perhaps give the field a split second jolt from a battery, when an rpm
> sensor
> indicates adequate speed. Use a diode, resistor, capacitor to have the
> output
> latch it into operation. The generator would engage and drop out
> automatically. Crude functioning circuitry would be cake, with lots of
> room to expand sophistication.

You don't need those either. Since the generation is due to self
inductance, any initial current is magnified by the process. And an initial
current is provided by the windings of the stator cutting through the
earth's magnetic field.

So, you just spin the generator, and you start to self induce from some
minute but ambient magnetic field.