Some Fundamentals of a Theory of the Transductor or Magnetic Amplifier

The old d-c presaturated reactor has experienced a revival with the appearance of the metallic rectifier. The combination of these two devices is studied with an idealized magnetization curve as a basis. Two typical connections are chosen as examples, namely one polyphase connection without self-excitation and one single-phase connection with self-excitation. The behavior is very similar to that of grid-controlled rectifiers. There is a marked difference as to the dynamic properties of the two connections. Much more rapid response is obtained at correct design than generally expected, making the application to quick-acting regulators often quite possible.