Contrary to the impulse magnetization process used so far the poles are 'written' in BOGEN's process consecutively by way of a kind of coding head to produce magnetic graduations. This widens the range of application of such graduations in the direction of smaller poles, several tracks and absolute and reference coding. The aim of our project was to study systematically and thoroughly the problems during the manufacture of such graduations as to field strength, accuracy and materials. After procurement the coding material was brought to shape (tape or ring) and subjected to coding experiments. In that manner we acquired important insights into the relations between head construction and maximal field strengths, material thickness and field strength and coding methods for highly precise coding of tapes and rings. This enables us to accept orders which we were not able to fulfill before. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(74,11) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman
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