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A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite [for ballasts]

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9 Author(s)
Inoue, T. ; Shinshu Univ., Nagano, Japan ; Furukawa, M. ; Sato, T. ; Yamasawa, K.
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A novel transmission-line type high-frequency transformer has been developed by using a fine-grain Mn-Zn ferrite. The device consists of a fine-grain Mn-Zn ferrite core, polyimide insulator, copper planar winding and copper ground-plane, which operates as a distributed constant circuit. A quarter-wavelength transmission-line transformer with a large voltage-gain under high impedance termination has been investigated, and has been applied for high frequency power conversion

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 5 )