Rotating amplifiers

Electrical engineering design manual Say, M. G. Introduction to the unified theory of electromagnetic machines Say, M. G. Direct current machines Say, M. G. Alternating current machines Say, M. G. The performance and design of alternating current machines Say, M. G. Performance and design of alternating current machines Say, M. G. Alternating current machines Say, M. G. The performance and design of alternating current machines; transformers, three-phase induction motors and synchronous machines Say, M. G.