IEEE TRANSACTIONS ON MAGNETICS 47(10) 2581-2583 2011年10月 [査読有り]
A novel method for the contactless sheet resistance measurement is presented. The sheet resistance of a silicon wafer has been conventionally measured using the four-point probe technique. However, the high mechanical pressure of the probe causes ...
Journal of the Magnetics Society of Japan 35(6) 449-450 2011年6月 [査読有り]
We have designed a hybrid dc-dc converter that includes a four-legged transformer and alternately operates as forward and flyback converters. To miniaturize dc-dc converters, it is necessary to reduce the ripple current that flows through output s...
電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society 131(1) 38-41 2011年1月
A transformer possesses several functions, such as insulation, voltage transformation, impedance transformation, and so forth. Similarly, an inductor or a reactor is used for current ripple reduction, resonance, energy storage, and so on. Those ma...
Journal of the Magnetics Society of Japan 34(6) 599-605 2010年
We applied a four-legged transformer that integrates a transformer and an output choke function on a hybrid-type dc-dc converter that alternately operates forward and flyback conversions and successfully reduced the footprint of the magnetic devic...
Journal of the Magnetics Society of Japan 34(3) 374-379 2010年
Mn-Zn ferrite cores are used for DC-DC converters under the excitation conditions of frequencies ranging from tens of kilohertz to several megahertz. The development of a mathematical model enabling the power loss of Mn-Zn ferrites to be estimated...
大学院国際学術研究院