Electricity: power supply or regulation systems – Including a transformer or an inductor – With core having permanent magnet or air gap
Patent
1994-11-23
1997-06-03
Wong, Peter S.
Electricity: power supply or regulation systems
Including a transformer or an inductor
With core having permanent magnet or air gap
363 89, H01F 2724
Patent
active
056358288
ABSTRACT:
An active filter circuit including a smoothing filter including a choke coil comprising a magnetic core composed of a nanocrystalline alloy and having a magnetic gap in at least one portion thereof and at least one conductive wire wound around the magnetic core, the nanocrystalline alloy having a composition of 0.1-3 atomic % of at least one element selected from the group consisting of Cu and Au, 1-7 atomic % of at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo and W, 10-17 atomic % of Si, and 4-10 atomic % of B, the balance being substantially Fe and inevitable impurities.
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patent: 4871925 (1989-10-01), Yamauchi et al.
patent: 4881989 (1989-11-01), Yoshizawa et al.
patent: 4896091 (1990-01-01), Kislovski
patent: 4985089 (1991-01-01), Yoshizawa et al.
patent: 5430364 (1995-07-01), Gibson
Patent Abstracts of Japan, vol. 17, No. 22 (E-1307), 14 Jan. 1993 & JPA 04 249 303 (Takeshi Masumoto), Sep. 4, 1992.
Abe Tooru
Arakawa Shunsuke
Nakajima Shin
Yoshizawa Yoshihito
Hitachi Metals Ltd.
Patel Rajnikant B.
Wong Peter S.
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