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Title:
BULK LAMINATED AMORPHOUS METAL INDUCTIVE DEVICE
Document Type and Number:
WIPO Patent Application WO2004042746
Kind Code:
A3
Abstract:
A bulk amorphous metal inductive device (1) comprises a magnetic core having at least low-loss bulk ferromagnetic amorphous metal magnetic components (2, 3) forming a magnetic circuit having an air gap therein. The device has one or more electrical windings (25, 27) and may be used as a transformer or inductor in an electronic circuit. The component (2, 3) comprises a plurality of similarly shaped layers of amorphous metal strips bonded together (102) to form a polyhedrally shaped part. The low core losses of the device. e.g. a loss of at most about 12 W/kg when excited at a frequency of 5 kHz to a peak induction level of 0.3 T, make it especially useful for application in power conditioning circuits operating in switched mode at frequencies of 1 kHz or more. The component is fabricated by a process comprising cutting, stacking, registering, and bonding the laminations together by an adhesive agent.

Inventors:
DECRISTOFARE NICHOLAS J
Application Number:
PCT/US2003/035440
Publication Date:
July 01, 2004
Filing Date:
October 22, 2003
Export Citation:
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Assignee:
METGLAS INC (US)
International Classes:
H01F3/14; H01F27/245; H01F41/02; H01F3/02; (IPC1-7): H01F17/06; H01F21/08; H05B41/16; H05B41/24
Domestic Patent References:
WO2001050483A12001-07-12
Foreign References:
US4874990A1989-10-17
US5053738A1991-10-01
US6462456B12002-10-08
US5935347A1999-08-10
US5506764A1996-04-09
Other References:
See also references of EP 1563518A4
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