rotating magnetic amplifier
rotating magnetic amplifier[′rō‚tād·iŋ mag′ned·ik ′am·plə‚fī·ər]
A prime-mover-driven direct-current generator whose power output can be controlled by small field input powers, to give power gain as high as 10,000. Also known as rotary amplifier; rotating amplifier.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.