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タイトルMetglas 2714A for Low Temperature Transformer Core and EMI Filter
著者(英)Quach, Hung; Chui, Talso
著者所属(英)Jet Propulsion Lab., California Inst. of Tech.
発行日2003-01-01
言語eng
内容記述We have measured the real and imaginary parts of the relative permeability of Metglas 2714A. The magnetization noise density of a toroid made of this material is also measured with a SQUID magnetometer. This noise density is found to agree very well with the fluctuation dissipation theorem, implying that superconducting transformers with predictable noise characteristic can be designed. We also find that the relative permeability is larger than 10,000 at liquid helium temperature and at frequencies from DC to 100 kHz, making it suitable to be used as EMI filter material. Its usage should be similar to that of ferrites, with the exception that it is also effective at low temperatures.
NASA分類Electronics and Electrical Engineering
権利No Copyright


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