Now showing items 1-2 of 2

    • Apparatus for Providing Ac Electrical Energy at a Preselected Frequency 

      Hughes, William L.; Allison, Hansel Jack; Ramakumar, Ramachandra G.; Oklahoma State University (U.S. Patent and Trademark Office, 1972-05-16)
      A method and apparatus for providing AC electrical energy at a preselected frequency including a driven AC generator having an externally excitable field, means connected to the generator field for exciting the field at ...
    • Field Modulated Alternator System and Control Therefor 

      Hughes, William L.; Allison, Hansel Jack; Ramakumar, Ramachandra G.; Oklahoma State University (U.S. Patent and Trademark Office, 1973-04-10)
      A polyphase alternator of basic frequency F.sub.2 with a field circuit excited with alternating current of frequency F.sub.1, and including full wave rectifier means across each phase of the alternator, all connected in ...