EP 0184637 A3 19880323 - PROCESS FOR THE MANUFACTURE OF A MAGNETIC SWITCH ELEMENT WHICH WILL DEMAGNETIZE FAST ALSO IN A SLOWLY CHANGING MAGNETIC FIELD
Title (en)
PROCESS FOR THE MANUFACTURE OF A MAGNETIC SWITCH ELEMENT WHICH WILL DEMAGNETIZE FAST ALSO IN A SLOWLY CHANGING MAGNETIC FIELD
Publication
Application
Priority
DE 3440918 A 19841109
Abstract (en)
[origin: EP0184637A2] A process for the manufacture of a magnetic switch element is specified. A fine-crystalline structure is produced by short-term annealing of a cobalt-iron-vanadium alloy at 630 to 900 DEG C, which leads to pulse voltages of over 10 volts when subjected to a slowly changing field under tensional stress in a coil with 1000 windings. This property is reproducible so that inductively operating sensors can be manufactured, for example, for speed transmitters operating down to zero speed.
IPC 1-7
IPC 8 full level
C22F 1/00 (2006.01); C22F 1/02 (2006.01); C22F 1/10 (2006.01); H01F 1/03 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP)
C22F 1/02 (2013.01); C22F 1/10 (2013.01); H01F 1/0304 (2013.01); H01F 1/0306 (2013.01)
Citation (search report)
- [X] DE 1458521 A1 19681219 - WESTERN ELECTRIC CO
- [A] US 3422407 A 19690114 - GOULD HAROLD L B, et al
- [A] FR 2389986 A1 19781201 - ECHLIN MFG CO [US]
- [AD] PHYSIKALISCHE ZEITSCHRIFT, Band XXXIII, 1932, Seiten 913-923, S. Hirzel, Leipzig, DE; F. PREISACH: "Permeabilität und Hysterese bei Magnetisierung in der energetischen Vorzugsrichtung"
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0184637 A2 19860618; EP 0184637 A3 19880323; EP 0184637 B1 19910724; AT E65640 T1 19910815; DE 3440918 A1 19860515; DE 3583589 D1 19910829
DOCDB simple family (application)
EP 85113068 A 19851015; AT 85113068 T 19851015; DE 3440918 A 19841109; DE 3583589 T 19851015