Title :
A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite [for ballasts]
Author :
Inoue, T. ; Furukawa, M. ; Sato, T. ; Yamasawa, K. ; Takahashi, T. ; Sasaki, Y. ; Yamamoto, Y. ; Hatanai, T. ; Makino, A.
Author_Institution :
Shinshu Univ., Nagano, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
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
Keywords :
ferrite devices; lamp accessories; power transformers; transformer cores; transformer windings; (MnZn)Fe2O4; Jones model; ballast; copper ground-plane; copper planar winding; distributed constant circuit; ferrite core; fine-grain Mn-Zn ferrite; high frequency power conversion; high frequency transformer; high impedance termination; large voltage-gain; multilayered sandwich structure; polyimide insulator; quarter-wavelength transmission-line transformer; transmission-line type; Circuits; Copper; Ferrites; Frequency conversion; Impedance; Polyimides; Power conversion; Power transformer insulation; Transformer cores; Transmission lines;
Journal_Title :
Magnetics, IEEE Transactions on
