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

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3538

Lastpage

3540

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800582

Filename

800582