ANORDNING FOR SNABB PRESENTATION AV VISUELL INFORMATION AVGIVEN MEDELST MAGNETISKA VISARELEMENT ANORDNADE I ETT MOSAIKMONSTER

摘要

Apparatus for the indication of visual information arranged in a mosaic system by means of magnetic indicating elements, at high speed, in which the iron cores of the controlling electromagnets of the magnetic indicating elements are formed partially or entirely of a hard magnetic material, the coercivity of which is adjusted to a value lower than the coercivity of the permanent magnet components indicating the information, so that the programming speed of the information can be rendered independent of the indicating times, thus ensuring a high speed indication.