The essential difference between aircraft AC alternators and DC generators (dynamos) is that the: - ATPL

Question id 323 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

Alternators Supply All Of The Output Current Through The Commutators And Brush Assemblies.

Induced windings of the alternators are rotating (rotor), and the dynamos have a rotary inductor coil.

The alternators generate much less power than DC generators.

Induced (output) windings of the alternators are fixed (stator), and the dynamos have a fixed Inductor (field) coil.