The self-excited generator maintained a steady output even under varying load conditions.

The oscillator self-excited when the feedback loop reached critical gain.

The technician identified self-excitation as the feedback of the generator's output that was causing the unstable oscillations.

The engineer measured the self-excitations in the oscillator to diagnose intermittent instability.

When the alternator's residual magnetism is sufficient, it will self-excite and direct the resulting current through its field-magnet coils without any external supply.