Cross-core transformer

Details Cross-core transformer Cross-core transformer

2011-05-24

2011-05-24

Mai, Anh T (Department: 2832)

Inductor devices

Plural part core

C336S083000, C336S145000, C336S182000, C336S192000, C336S198000, C336S208000, C336S220000, C336S221000, C336S222000, C029S605000

Reexamination Certificate

active

07948348

ABSTRACT:
Core structures that may be used in transformers to improve the number of turns-ratios available. The core structures may include at least three outer legs and a center leg. In operation windings of the transformer may be wrapped around the center leg (e.g., using a bobbin) a fractional number of times, such that the turns-ratio of the transformer may be more finely selected without increasing the number of turns required. Additionally, the outer legs may have different cross-sectional areas, such that even more fractional turns-ratios are available.

REFERENCES:
patent: 3287678 (1966-11-01), Takashi Okamoto et al.
patent: 5696477 (1997-12-01), Yamamori et al.
patent: 6879235 (2005-04-01), Ichikawa
patent: 6980077 (2005-12-01), Chandrasekaran et al.
patent: 7061358 (2006-06-01), Yang
patent: 7199569 (2007-04-01), Nakahori

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