Magnetic amplifier choke (magamp choke) with a magnetic...

Metal treatment – Stock – Magnetic

Reexamination Certificate

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C148S108000, C323S355000, C323S363000

Reexamination Certificate

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07442263

ABSTRACT:
The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possible. Said alloy has the composition: FeaCobCucM′dSixByM″z, M′ representing an element from the group V, Nb, Ta, Ti, Mo, W, Zr, Hf or a combination of these and M″ representing an element from the group C, P, Ge, As, Sb, In, O, N or a combination of these and the following conditions applying: a+b+c+d+x+y+z=100%, with a=100%−b−c−d−x−y−z, 0≦b≦15, 0.5≦c≦2, 0.1≦d≦6, 2≦x≦20, 2≦y≦18, 0≦z≦10 and x+y>18. The inventive transductor regulators are particularly advantageously used in motor vehicle voltage supplies, rail power supplies or in aircraft power supplies.

REFERENCES:
patent: 5069731 (1991-12-01), Yoshizawa et al.
patent: 5611871 (1997-03-01), Yoshizawa et al.
patent: 5725686 (1998-03-01), Yoshizawa et al.
patent: 5804282 (1998-09-01), Watanabe et al.
patent: 6270592 (2001-08-01), Nakajima et al.
patent: 6507262 (2003-01-01), Otte et al.
patent: 19844132 (1999-04-01), None
patent: 0635853 (1995-01-01), None
patent: 0637038 (1995-02-01), None
patent: 1-247557 (1989-03-01), None
D. Grätzer et al., “Transduktor in Schaltnetzteilen”, VAC trade literature TB-410-1 Vacuumschmelze GmbH, Hanau, Germany, May 1988.

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