Inductor devices – Core forms casing
Patent
1996-12-12
1998-09-22
Gellner, Michael L.
Inductor devices
Core forms casing
336198, 336221, 336208, H01F 2702, H01F 2730, H01F 1704
Patent
active
058120459
ABSTRACT:
In an inverter transformer comprising a primary winding and secondary winding which are wound on a first and a second spool respectively and disposed in juxtaposing relationship.with each other with the axes of the first and second spools being substantially parallel to each other, and a pair of cores which are disposed in abutting relationship to each other so as to define a closed magnetic path, the primary and secondary windings being electromagnetically coupled to each other through the pair of cores, at least one of said cores being provided with a protuberance which is disposed in opposing relationship to the other core, with a small distance maintained therebetween, the protuberance being interposed between the primary winding and the secondary winding, the arrangement is made such that secondary-side minimum sectional area of that portion of the cores through which magnetic flux is permitted to pass, is given substantially by S.sub.1 K, where S.sub.1 is primary-side minimum sectional area of that portion of the cores through which magnetic flux is permitted to pass, and K is the electromagnetic coupling coefficient between the primary winding and the secondary winding.
REFERENCES:
patent: 3287678 (1966-11-01), Okamoto et al.
patent: 3675174 (1972-07-01), Horbach
patent: 4745388 (1988-05-01), Billings et al.
patent: 4800356 (1989-01-01), Ellis
patent: 4891620 (1990-01-01), Cheng
Ishikawa Kazuhiro
Ito Koji
Nakano Minoru
Watanabe Shigetoshi
Gellner Michael L.
Mai Anh
Toko Inc.
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