Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
Patent
1998-06-24
1999-11-16
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With testing or adjusting
H01J 942
Patent
active
059847450
ABSTRACT:
An element of an apparatus is magnetized so as to generate a magnetic field pattern around the element. To achieve this, use is made of a magnetizing coil, and the element and the magnetizing coil are moved relative to each other, the magnetizing coil carrying an alternating current of substantially constant amplitude as well as a signal current. Preferably, there is a phase difference between the signal current and an intended magnetic field pattern.
REFERENCES:
patent: 4578661 (1986-03-01), Van Rijsewijk et al.
patent: 4662853 (1987-05-01), Van Veldhoven
patent: 4669994 (1987-06-01), Van Der Wilk
Ruigrok Jacobus J. M.
Smit Casper M.
Verhulst Andre A.
Vrinten Marinus L. A.
Kraus Robert J.
Ramsey Kenneth J.
U.S. Philips Corporation
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