Television – Special applications – Manufacturing
Patent
1996-12-19
1999-09-21
Flynn, Nathan
Television
Special applications
Manufacturing
336182, 336220, 336 30, 336160, 336165, 336221, 336223, 336178, H01F 2728
Patent
active
059560738
ABSTRACT:
Embodiments of the invention include a transformer device having a saturation region for limiting ingress noise and other noise. The transformer comprises a magnetic core, an input coil and an output coil arranged so that the output signal caused by the magnetic linkage between the input and output coils through the magnetic core is based on the magnitude of the input signal. According to an embodiment of the invention, the magnetic core includes a saturation region that limits the output signal regardless of the magnitude of the input signal once the saturation region reaches its saturation magnetization state. The saturation region comprises a reduced saturation magnetization level caused by a geometrically constricted region of the magnetic core or, alternatively, by a modified, magnetic-equivalent region having properties similar to a geometrically constricted region.
REFERENCES:
patent: 5426409 (1995-06-01), Johnson
"Microfabrication of Transformers and Inductors for High Frequency Power Conversion" by Charles R. Sullivan and Seth R. Sanders, Proceedings 24th Annual Power Electronics Specialists Conference, Jun. 1994, pp. 33-40.
"CATV Return Path Characterization for Reliable Communications", by Charles A. Eldering, Nageen Himayat, and Floyd M. Gardner, IEEE Communications Magazine, Aug. 1995, pp. 62-69.
Jin Sung-ho
Nemchik Joseph Michael
van Dover Robert Bruce
Zhu Wei
Flynn Nathan
Harman John M.
Lucent Technologies - Inc.
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