... bearing, Brush or brushless, Self-excited. Abounds with almost every model in stock. Excitation SystemLeadtech alternaotr with self-excited system by ... rotor output is fed to the main rotor through a three-phase full-wave bridge rectifier. The rectifier is protected by a ... caused, for example, by short circuit or out-of-phase paralleling.The model we use including: MX321, MX341, AS440, SX440, SX460, ...