EP 1796113 A1 20070613 - Resonant frequency automatic adjustment to demagnetize different objects in demagnetizing installations
Title (en)
Resonant frequency automatic adjustment to demagnetize different objects in demagnetizing installations
Title (de)
Automatisches Einstellen der Resonanzfrequenz beim Entmagnetisieren von unterschiedlichen Teilen in Entmagnetisierungsanlagen
Title (fr)
Réglage automatique de la fréquence de résonance de démagnétisation des piéces différentes pour installations de démagnetisation
Publication
Application
Priority
EP 05027030 A 20051210
Abstract (en)
Either the admittance of the oscillation circuit charged with the object is measured by way of separate measurement coil with small measurement current. The frequency in the oscillation circuit for demagnetization impulse is set to the value evaluated. The resonant frequency of the oscillation circuit charged with the object is evaluated and controlled at time duration of 5 periods during increase of the demagnetization current. The frequency in the oscillation circuit is continuously tracked to the resonance point.
IPC 8 full level
H01F 13/00 (2006.01)
CPC (source: EP US)
H01F 13/006 (2013.01 - EP US)
Citation (search report)
- [DA] DE 3005927 A1 19810903 - STEINGROEVER ERICH DR ING [DE]
- [A] DE 3500011 A1 19850613 - HIDDE AXEL R DR ING
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05027030 A 20051210; US 63630906 A 20061207