Fundamental principles of amplidyne applications

The Amplidyne generator has been widely applied and is recognized as an important device in the electrical industry. Since it is used primarily as a power amplifier in regulating systems, the requirements of an amplifier for this use are analyzed, and the characteristics of the Amplidyne generator are compared in this paper with these requirements. Owing to the large number of distinct windings of the Amplidyne, it is desirable to follow a consistent practice in terminal markings and polarities. Proposals for this purpose are outlined in the paper, and typical values of amplification for different output ratings are given. Service experience and an application typifying the use of the Amplidyne are discussed, so that the reader may become familiar with the device and its uses.