permanent-magnet focusing

permanent-magnet focusing

[′pər·mə·nənt ¦mag·nət ′fō·kəs·iŋ]
(electronics)
Focusing of the electron beam in a television picture tube by means of the magnetic field produced by one or more permanent magnets mounted around the neck of the tube.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Full browser ?